MARPOL Convention Annex I Regulations for the Prevention of Pollution by Oil
Regulation 1 Definitions For the purposes of this Annex:
1 Oil means petroleum in all its manifestations, including crude oil, fuel oil, sludge, oil residues and refined products (other than those petrochemicals which are subject to the provisions of Annex II of the present Convention) and, without limiting the generality of the foregoing, the substances listed in appendix I to this annex.
2 Crude oil means any liquid hydrocarbon mixture occurring naturally in the earth, whether or not treated to render it suitable for transportation; the term includes:
.1 crude oils from which certain distillate fractions have been removed; and .2 crude oils to which certain distillate fractions have been added.
3 Oily mixture means any mixture containing oil.
4 Liquid fuel means any oil used as fuel for the propulsion and auxiliary machinery of the ship carrying such fuel.
5 Oil tanker means any ship constructed or adapted primarily to carry oil in bulk in its cargo spaces; this term includes combination carriers, any "NLS tanker" as defined in Annex II of the present Convention, and any gas carrier as defined in regulation 3.20 of chapter II-1 of SOLAS 1974 (as amended), when carrying a cargo or part cargo of oil in bulk.
6 Crude oil tanker means an oil tanker intended for the carriage of crude oil.
7 Product carrier means an oil tanker intended for the carriage of oil other than crude oil.
8 Combination carrier means a ship designed to carry either oil or solid cargoes in bulk.
9 Major conversion:
.1 means a conversion of a ship:
.1.1 which substantially alters the dimensions or carrying capacity of the ship; or .1.2 which changes the type of the ship; or .1.3 the intent of which, in the opinion of the Administration, is substantially to prolong the life of the ship; or .1.4 which otherwise so alters the ship that, if it were a new ship, it would become subject to relevant provisions of the present Convention not applicable to it as an existing ship.
.2 Notwithstanding the provisions of this definition:
.2.1 conversion of an oil tanker of 20,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, to meet the requirements of regulation 18 of this annex shall not be deemed to constitute a major conversion for the purposes of this annex; and .2.2 conversion of an oil tanker delivered before 6 July 1996, as defined in regulation 1.28.5, to meet the requirements of regulations 19 or 20 of this annex shall not be deemed to constitute a major conversion for the purposes of this annex.
10 Nearest land. The term "from the nearest land" means from the baseline from which the territorial sea of the territory in question is established in accordance with international law, with the exception that, for the purposes of the present Convention, "from the nearest land" off the north-eastern coast of Australia shall mean from a line drawn from a point on the coast of Australia in:
latitude 11°00' S, longitude 142°08' E, to a point in latitude 10°35' S, longitude 141°55' E, thence to a point in latitude 10°00' S, longitude 142°00' E, thence to a point in latitude 9°10' S, longitude 143°52' E, thence to a point in latitude 9°00' S, longitude 144°30' E, thence to a point in latitude 10°41' S, longitude 145°00' E, thence to a point in latitude 13°00' S, longitude 145°00' E, thence to a point in latitude 15°00' S, longitude 146°00' E, thence to a point in latitude 17°30' S, longitude 147°00' E, thence to a point in latitude 21°00' S, longitude 152°55' E, thence to a point in latitude 24°30' S, longitude 154°00' E, and finally from this position to a point on the coast of Australia in: latitude 24°42' S, longitude 153°15' E.
11 Special area means any sea area where for recognised technical reasons in relation to its oceanographical and ecological conditions and the particular character of its traffic, the adoption of special mandatory methods for the prevention of sea pollution by oil is required.
For the purposes of this annex, the special areas are defined as follows:
.1 the Mediterranean Sea area means the Mediterranean Sea proper, including the gulfs and seas therein, with the boundary between the Mediterranean and the Black Sea being the 41° N parallel, and the western limit being the meridian 5°36' W, passing through the Strait of Gibraltar; .2 the Baltic Sea area means the Baltic Sea proper, with the Gulf of Bothnia, the Gulf of Finland and the entrance to the Baltic Sea bounded by the parallel of Skagen in the Skagerrak at 57°44'.8 N; .3 the Black Sea area means the Black Sea proper, separated from the Mediterranean by the boundary at the 41° N parallel; .4 the Red Sea area means the Red Sea proper, including the Gulfs of Suez and Aqaba, bounded on the south by the rhumb line between Ras si Ane (12°28'.5 N, 43°19'.6 E) and Husn Murad (12°40'.4 N, 43°30'.2 E); .5 the Gulfs area means the sea area lying northwest of the rhumb line between Ras al Hadd (22°30' N, 59°48' E) and Ras al Fasteh (25°04' N, 61°25' E); .6 the "Gulf of Aden area" means the part of the Gulf of Aden lying between the Red Sea and the Arabian Sea, bounded on the west by the rhumb line between Ras si Ane (12°28'.5 N, 43°19'.6 E) and Husn Murad (12°40'.4 N, 43°30'.2 E), and on the east by the rhumb line between Ras Asir (11°50' N, 51°16'.9 E) and Ras Fartak (15°35' N, 52°13'.8 E); .7 the Antarctic area means the sea area south of latitude 60° S; and .8 the North-West European waters include the North Sea and its approaches, the Irish Sea and its approaches, the Celtic Sea, the English Channel and its approaches, and part of the North-East Atlantic immediately to the west of Ireland. The area is bounded by lines joining the following points:
48°27' N on the French coast 48°27' N; 6°25' W 49°52' N; 7°44' W 50°30' N; 12° W 56°30' N; 12° W 62° N; 3° W 62° N on the Norwegian coast 57°44'.8 N on the Danish and Swedish coasts.
.9 the Oman area of the Arabian Sea means the sea area enclosed by the following coordinates:
| 22° 30'.00 N; | 59° 48'.00 E | | 23° 47'.27 N; | 60° 35'.73 E | | 22° 40'.62 N; | 62° 25'.29 E | | 21° 47'.40 N; | 63° 22'.22 E | | 20° 30'.37 N; | 62° 52'.41 E | | 19° 45'.90 N; | 62° 25'.97 E | | 18° 49'.92 N; | 62° 02'.94 E | | 17° 44'.36 N; | 61° 05'.53 E | | 16° 43'.71 N; | 60° 25'.62 E | | 16° 03'.90 N; | 59° 32'.24 E | | 15° 15'.20 N; | 58° 58'.52 E | | 14° 36'.93 N; | 58° 10'.23 E | | 14° 18'.93 N; | 57° 27'.03 E | | 14° 11'.53 N; | 56° 53".75 E | | 13° 53".80 N; | 56° 19'.24 E | | 13° 45'.86 N; | 55° 54'.53 E | | 14° 27".38 N; | 54° 51'.42 E | | 14° 40'.10 N; | 54° 27'.35 E | | 14° 46".21 N; | 54° 08".56 E | | 15° 20'.74 N; | 53° 38'.33 E | | 15° 48'.69 N; | 53° 32'.07 E | | 16° 23'.02 N; | 53° 14'.82 E | | 16° 39'.06 N; | 53° 06'.52 E | .10 the Southern South African waters means the sea area enclosed by the following coordinates:
| 31°14' S; | 17°50' E | | 31°30' S; | 17°12' E | | 32°00' S; | 17°06' E | | 32°32' S; | 16°52' E | | 34°06' S; | 17°24' E | | 36°58' S; | 20°54' E | | 36°00' S; | 22°30' E | | 35°14' S; | 22°54' E | | 34°30' S; | 26°00' E | | 33°48' S; | 27°25' E | | 33°27' S; | 27°12' E | 12 Instantaneous rate of discharge of oil means the rate of discharge of oil in litres per hour at any instant divided by the speed of the ship in knots at the same instant.
13 Tank means an enclosed space which is formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.
14 Wing tank means any tank adjacent to the side shell plating.
15 Centre tank means any tank located inboard of a longitudinal bulkhead.
16 Slop tank means any tank specifically designated for the collection of tank drainings, tank washings and other oily mixtures.
17 Clean ballast means the ballast in a tank which, since oil was last carried therein, has been so cleaned that the effluent therefrom, if it were discharged by a stationary ship into clean calm water on a clear day, would not produce visible traces of oil on the surface of the water or upon adjoining shorelines or cause a sludge or emulsion to be deposited beneath the surface of the water or upon adjoining shorelines. If the ballast is discharged through an oil discharge monitoring and control system approved by the Administration, evidence based upon such a system that the oil content of the effluent did not exceed 15 ppm shall be determinative that the ballast was clean, notwithstanding the presence of visible traces.
18 Segregated ballast means the ballast water introduced into a tank which is completely separated from the cargo oil and fuel oil systems and which is permanently allocated to the carriage of ballast or to the carriage of ballast or cargoes other than oil or noxious liquid substances as defined in the various annexes of the present Convention.
19 Length (L): the length L shall be taken as 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel, or as the length from the foreside of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel, the waterline on which this length is measured shall be parallel to the designed waterline. The length (L) shall be measured in metres.
20 Forward and after perpendiculars shall be taken at the forward and after ends of the length (L). The forward perpendicular shall coincide with the foreside of the stem on the waterline on which the length is measured.
21 Amidships is at the middle of the length (L).
22 Breadth (B) is the greatest moulded breadth of the ship at or below the deepest waterline. In ships with metal shells, the moulded breadth is measured to the moulded line of the frame; in ships with shells of other materials, it is measured to the outer surface of the hull. The breadth (B) shall be measured in metres.
23 Deadweight (DW) means the difference in tonnes between the displacement of a ship in water of relative density of 1.025 at the summer load waterline corresponding to the assigned summer freeboard and the lightweight of the ship.
24 Lightweight means the displacement of a ship in tonnes without cargo, fuel, lubricating oil, ballast water, fresh water, boiler feedwater in tanks, consumable stores, and passengers and crew and their effects.
25 Permeability of a space means the ratio of the volume within that space which is assumed to be occupied by water, to the total volume of that space.
26 Volumes and areas of a ship shall in all cases be calculated to moulded lines.
27 Anniversary date means the day and the month of each year that will correspond to the date of expiry of the International Oil Pollution Prevention Certificate.
28.1 "Ship delivered on or before 31 December 1979" means:
.1 a ship for which the building contract is awarded on or before 31 December 1975; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or before 30 June 1976; or .3 a ship delivered on or before 31 December 1979; or .4 a ship which has undergone a major conversion:
.4.1 for which the contract is awarded on or before 31 December 1975; or .4.2 in the absence of a contract, the construction work of which is begun on or before 30 June 1976; or .4.3 which is completed on or before 31 December 1979.
28.2 "Ship delivered after 31 December 1979" means:
.1 a ship for which the building contract is awarded after 31 December 1975; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction after 30 June 1976; or .3 a ship delivered after 31 December 1979; or .4 a ship which has undergone a major conversion:
.4.1 for which the contract is awarded after 31 December 1975; or .4.2 in the absence of a contract, the construction work of which is begun after 30 June 1976; or .4.3 which is completed after 31 December 1979.
28.3 "Oil tanker delivered on or before 1 June 1982" means:
.1 an oil tanker for which the building contract is awarded on or before 1 June 1979; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or before 1 January 1980; or .3 an oil tanker delivered on or before 1 June 1982; or .4 an oil tanker which has undergone a major conversion:
.4.1 for which the contract is awarded on or before 1 June 1979; or .4.2 in the absence of a contract, the construction work of which is begun on or before 1 January 1980; or .4.3 which is completed on or before 1 June 1982.
28.4 "Oil tanker delivered after 1 June 1982" means:
.1 an oil tanker for which the building contract is awarded after 1 June 1979; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction after 1 January 1980; or .3 an oil tanker delivered after 1 June 1982; or .4 an oil tanker which has undergone a major conversion:
.4.1 for which the contract is awarded after 1 June 1979; or .4.2 in the absence of a contract, the construction work of which is begun after 1 January 1980; or .4.3 which is completed after 1 June 1982.
28.5 "Oil tanker delivered before 6 July 1996" means:
.1 an oil tanker for which the building contract is awarded before 6 July 1993; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction before 6 January 1994; or .3 an oil tanker delivered before 6 July 1996; or .4 an oil tanker which has undergone a major conversion:
.4.1 for which the contract is awarded before 6 July 1993; or .4.2 in the absence of a contract, the construction work of which is begun before 6 January 1994; or .4.3 which is completed before 6 July 1996.
28.6 "Oil tanker delivered on or after 6 July 1996" means:
.1 an oil tanker for which the building contract is awarded on or after 6 July 1993; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 6 January 1994; or .3 an oil tanker delivered on or after 6 July 1996; or .4 an oil tanker which has undergone a major conversion:
.4.1 for which the contract is awarded on or after 6 July 1993; or .4.2 in the absence of a contract, the construction work of which is begun on or after 6 January 1994; or .4.3 which is completed on or after 6 July 1996.
28.7 "Oil tanker delivered on or after 1 February 2002" means:
.1 an oil tanker for which the building contract is awarded on or after 1 February 1999; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 1 August 1999; or .3 an oil tanker delivered on or after 1 February 2002; or .4 an oil tanker which has undergone a major conversion:
4.1 for which the contract is awarded on or after 1 February 1999; or 4.2 in the absence of a contract, the construction work of which is begun on or after 1 August 1999; or 4.3 which is completed on or after 1 February 2002.
28.8 "Oil tanker delivered on or after 1 January 2010" means:
.1 an oil tanker for which the building contract is awarded on or after 1 January 2007; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction on or after 1 July 2007; or .3 an oil tanker delivered on or after 1 January 2010; or .4 an oil tanker which has undergone a major conversion:
4.1 for which the contract is awarded on or after 1 January 2007; or 4.2 in the absence of a contract, the construction work of which is begun on or after 1 July 2007; or 4.3 which is completed on or after 1 January 2010.
28.9 "Ship delivered on or after 1 August 2010" means:
.1 a ship for which the building contract is awarded on or after 1 August 2007; or .2 in the absence of a building contract, the keel of which is laid or which is at a similar stage of construction, on or after 1 February 2008; or .3 a ship delivered on or after 1 August 2010; or .4 a ship which has undergone a major conversion:
4.1 for which the contract is awarded after 1 August 2007; or 4.2 in the absence of a contract, the construction work of which is begun after 1 February 2008; or 4.3 which is completed after 1 August 2010.
29 Parts per million (ppm) means parts of oil per million parts of water by volume.
30 "Constructed" means a ship the keel of which is laid or which is at a similar stage of construction.
31 Oil residues (sludge) means the residual waste oil products generated during the normal operation of a ship, such as those resulting from the purification of fuel or lubricating oil for main or auxiliary machinery, separated waste oil from oil filtering equipment, waste oil collected in drip trays, and waste hydraulic and lubricating oils.
32 Oil residue (sludge) tank means a tank which holds oil residues (sludge) from which they may be disposed directly through the standard discharge connection or any other approved means of disposal.
33 Oily bilge water means water which may be contaminated by oil resulting from occurrences such as leakage or maintenance work in machinery spaces. Any liquid entering the bilge system, including bilge wells, bilge piping, tank top or bilge holding tanks, is considered oily bilge water.
34 Oily bilge water holding tank means a tank collecting oily bilge water prior to its discharge, transfer or disposal.
35 Audit means a systematic, independent and documented process for obtaining audit evidence and evaluating it objectively to determine the extent to which audit criteria are fulfilled.
36 Audit Scheme means the IMO Member State Audit Scheme established by the Organization and taking into account the guidelines developed by the Organization.
37 Code for Implementation means the IMO Instruments Implementation Code (III Code), adopted by the Organization by resolution A.1070(28).
38 Audit Standard means the Code for Implementation.
39 Electronic record book means a device or system, approved by the Administration, used to electronically record the entries of discharges, transfers and other operations required under this annex, in place of a hard copy record book.
40 Unmanned non-self-propelled (UNSP) barge means a barge that:
.1 is not equipped with any means of mechanical propulsion; .2 does not carry oil (as defined in regulation 1.1 of this annex); .3 has no machinery that may use oil or generate oil residue (sludge); .4 has no fuel oil tank, lubricating oil tank, oily bilge water holding tank and oil residue (sludge) tank; and .5 carries no persons or live animals.
Regulation 2 Application 1 Unless expressly provided otherwise, the provisions of this annex shall apply to all ships.
2 In non-oil-tanker ships, with cargo spaces constructed and utilized to carry oil in bulk and which have a total capacity of 200 m3 or more, the requirements of regulations 16, 26.4, 29, 30, 31, 32, 34 and 36 of this annex for oil tankers shall also apply to the construction and operation of such spaces, except that where such total capacity is less than 1,000 m3, the requirements of regulation 34.6 of this annex may be applied in lieu of regulations 29, 31 and 32.
3 Where a cargo subject to Annex II of the present Convention is carried in a cargo space of an oil tanker, the appropriate requirements of Annex II of the present Convention shall also apply.
4 The requirements of regulations 29, 31 and 32 of this annex shall not apply to oil tankers carrying asphalt or other products subject to the provisions of this annex, which through their physical properties inhibit effective product/water separation and monitoring.
In the case of such oil tankers, the control of discharge under regulation 34 of this annex shall require retention of residues on board and discharge of all contaminated washings to reception facilities.
5 Subject to the provisions of paragraph 6 of this regulation, paragraphs 6 to 8 of regulation 18 of this annex shall not apply to an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, solely engaged in specific trades between:
.1 ports or terminals within a State Party to the present Convention; or .2 ports or terminals of States Parties to the present Convention, where:
2.1 the voyage is entirely within a special area; or 2.2 the voyage is entirely within other limits designated by the Organization.
6 The provisions of paragraph 5 of this regulation shall only apply when the ports or terminals where cargo is loaded on such voyages have adequate facilities for the reception and treatment of all the ballast and tank washings from oil tankers using them and all the following conditions are met:
1 subject to the exceptions provided for in regulation 4 of this annex, all ballast water, including clean ballast water, and tank washing residues, are retained on board and transferred to the reception facilities and the appropriate entry in the Oil Record Book Part II referred to in regulation 36 of this annex is endorsed by the competent port State authority; .2 agreement has been reached between the Administration and the Governments of the port States referred to in paragraphs 5.1 or 5.2 of this regulation concerning the use of an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, for a specific trade; .3 in accordance with the relevant provisions of this annex, the reception facilities at the ports or terminals referred to above are deemed sufficient for the purpose of this regulation by the Governments of the States Parties to the present Convention within whose territories those ports or terminals are situated; and .4 the International Oil Pollution Prevention Certificate is endorsed to the effect that the oil tanker is solely engaged in that specific trade.
Regulation 3 Exemptions and waivers 1 Any ship such as hydrofoils, air-cushion vehicles, sub-surface vehicles, submersibles, etc., whose constructional features are such as to render the application of any of the provisions of chapters 3 and 4 of this annex or section 1.2 of part II-A of the Polar Code unreasonable or impracticable, may be exempted by the Administration from those provisions, provided that the construction and equipment of that ship provides equivalent protection against oil pollution, having regard to the service for which it is intended.
2 Details of any such exemption granted by the Administration, except those indicated in paragraph 7 of this regulation, shall be indicated in the certificate referred to in regulation 7 of this annex.
3 The Administration having allowed any such exemption shall, as soon as possible, but not more than 90 days thereafter, communicate to the Organization the particulars and reasons for that exemption, and the Organization shall circulate such information to the Parties to the present Convention for their information and appropriate action, if any.
4 The Administration may waive the requirements of regulations 29, 31 and 32 of this annex for any oil tanker engaged exclusively on voyages of 72 hours or less in duration, within 50 nautical miles from the nearest land, provided such oil tanker is engaged exclusively in trades between ports or terminals of a State Party to the present Convention. Any such waiver shall be subject to the requirement that the oil tanker shall retain on board all oily mixtures for subsequent discharge to reception facilities and to the determination by the Administration that adequate facilities are available to receive such oily mixtures.
5 The Administration may waive the requirements of regulations 31 and 32 of this annex for oil tankers other than those referred to in paragraph 4 of this regulation, in the following cases:
1 the tanker is an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, of 40,000 tonnes deadweight or above, and as referred to in regulation 2.5 of this annex, solely engaged in specific trades, and the conditions specified in regulation 2.6 of this annex are met; or .2 the oil tanker is engaged exclusively in one or more of the following categories of voyage:
.2.1 within special areas; or .2.2 in Arctic waters; or .2.3 within 50 nautical miles from the nearest land outside special areas or Arctic waters, where the tanker is engaged in:
.2.3.1 Traffic between ports or terminals of a State Party to this Convention, or .2.3.2 Voyages of a restricted nature defined by the Administration, whose duration is 72 hours or less; provided that all of the following conditions are met:
.2.4 All oily mixtures are retained on board for subsequent discharge to reception facilities; .2.5 For the voyages specified in paragraph 5.2.3 of this regulation, the Administration has ascertained that adequate reception facilities are available to receive such oily mixtures at the oil loading ports or terminals where the tanker calls; .2.6 When necessary, it is confirmed, by endorsement of the International Oil Pollution Prevention Certificate, that the vessel is engaged exclusively on the voyages specified in paragraphs 5.2.1 and 5.2.3.2 of this regulation; and .2.7 The quantity, time, and port of discharge are recorded in the Oil Record Book.
6 The Administration may exempt the following oil tankers from the requirements of regulation 28(6), if they are loaded in accordance with conditions approved by the Administration, taking into account the guidelines developed by the Organization:
.1 Oil tankers engaged on a specific service, with a limited number of cargo permutations, such that all conditions contemplated in the stability information provided to the master in accordance with regulation 28(5) have been approved; .2 Oil tankers where stability verification is performed remotely by means approved by the Administration; .3 Oil tankers loaded in accordance with an approved range of loading conditions; or .4 Oil tankers constructed before 1 January 2016 with approved limiting KG/GM curves that meet all the applicable intact and damage stability requirements.
7 The Administration may exempt an unmanned non-self-propelled (UNSP) barge from the requirements of regulations 6.1 and 7.1 of this Annex by means of an international oil pollution prevention exemption certificate for unmanned non-self-propelled barges, for a period not exceeding five years, provided that the UNSP barge has been surveyed to confirm compliance with the conditions referred to in regulations 1.40.1 to 1.40.5 of this Annex.
Regulation 4 Exceptions Regulations 15 and 34 of this Annex and paragraph 1.1.1 of part II-A of the Polar Code shall not apply:
.1 To the discharge into the sea of oil or oily mixtures necessary for the purpose of securing the safety of a ship or saving life at sea; or .2 To the discharge into the sea of oil or oily mixtures resulting from damage to a ship or its equipment:
.2.1 Provided that all reasonable precautions have been taken after the occurrence of the damage or discovery of the discharge for the purpose of preventing or minimizing such discharge; and .2.2 Except if the owner or the master acted either with intent to cause damage, or recklessly and with knowledge that damage would probably result; or .3 To the discharge into the sea of substances containing oil, approved by the Administration, when being used for combating specific pollution incidents in order to minimize the damage from such pollution. Any such discharge shall be subject to the approval of any Government with jurisdiction in the area where the discharge is intended to occur.
Regulation 5 Equivalents 1 The Administration may allow any fitting, material, appliance or apparatus to be fitted in a ship in substitution for those required by this Annex, if such fitting, material, appliance or apparatus is at least as effective as that required by this Annex. This authority of the Administration shall not permit the substitution, as equivalents, of the design and construction standards prescribed in the regulations of this Annex by operational methods intended to control the discharge of oil.
2 The Administration which allows a fitting, material, appliance or apparatus in substitution for those required by this Annex shall communicate to the Organization the particulars thereof, for transmission to the Parties to the Convention for their information and appropriate action, if any.
Regulation 6 Surveys 1 Every oil tanker of 150 gross tonnage and above, and every other ship of 400 gross tonnage and above, shall be subject to the surveys specified below:
.1 An initial survey before the ship is put in service or before the certificate required under regulation 7 of this Annex is issued for the first time, which shall include a complete examination of its structure, equipment, systems, fittings, arrangements and material in so far as this Annex applies to the ship. This survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with the applicable requirements of this Annex; .2 A renewal survey at intervals specified by the Administration, but not exceeding five years, except where regulation 10.2.2, 10.5, 10.6 or 10.7 of this Annex is applicable. The renewal survey shall be such as to ensure that the structure, equipment, systems, fittings, arrangements and material fully comply with the applicable requirements of this Annex; .3 An intermediate survey within three months before or after the second or third annual anniversary date of the certificate, which shall take the place of one of the annual surveys specified in paragraph 1.4 of this regulation. The intermediate survey shall be such as to ensure that the equipment and associated pump and piping systems, including oil discharge monitoring and control systems, crude oil washing systems, oily-water separating equipment and oil filtering systems, fully comply with the applicable requirements of this Annex and are in good working order. Such intermediate surveys shall be endorsed on the certificate issued under regulation 7 or 8 of this Annex; .4 An annual survey within three months before or after the annual anniversary date of the certificate, including a general inspection of the structure, equipment, systems, fittings, arrangements and material referred to in paragraph 1.1 of this regulation to ensure that they have been maintained in accordance with paragraphs 4.1 and 4.2 of this regulation and that they remain satisfactory for the service for which the ship is intended. Such annual surveys shall be endorsed on the certificate issued under regulation 7 or 8 of this Annex; and .5 An additional survey, either general or partial, according to the circumstances, shall be made after the repair resulting from the investigations prescribed in paragraph 4.3 of this regulation, or whenever any important repairs or renewals are made. The survey shall be such as to ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are in all respects satisfactory, and that the ship complies in all respects with the requirements of this Annex.
2 The Administration shall establish appropriate measures for ships not subject to the provisions of paragraph 1 of this regulation to ensure compliance with the applicable provisions of this Annex.
3.1 Surveys of ships, as regards the enforcement of the provisions of this Annex, shall be carried out by officers of the Administration. The Administration may, however, entrust the surveys either to surveyors nominated for the purpose or to organizations recognized by it. Such organizations, including classification societies, shall be authorized by the Administration in accordance with the provisions of the present Convention and with the Code for Recognized Organizations (RO Code), consisting of part 1 and part 2 (the provisions of which shall be treated as mandatory) and part 3 (the provisions of which shall be treated as recommendatory), adopted by the Organization by resolution MEPC.237(65), as may be amended by the Organization, provided that:
.1 Amendments to part 1 and part 2 of the RO Code are adopted, brought into force and take effect in accordance with the provisions of article 16 of the present Convention concerning the amendment procedures applicable to this Annex; .2 Amendments to part 3 of the RO Code are adopted by the Marine Environment Protection Committee in accordance with its Rules of Procedure; and .3 Any amendments referred to in .1 and .2, adopted by the Maritime Safety Committee and the Marine Environment Protection Committee, are identical and come into force or take effect at the same time, as appropriate.
3.2 The Administration that nominates surveyors or recognizes organizations to conduct surveys, as stipulated in paragraph 3.1 of this regulation, shall empower any nominated surveyor or recognized organization to, as a minimum:
.1 Require repairs to a ship; and .2 Carry out surveys if requested by the appropriate authorities of a port State.
The Administration shall notify the Organization of the specific responsibilities and conditions of the authority delegated to nominated surveyors or recognized organizations, for communication to the Parties to the present Convention for the information of their officers.
3.3 When a nominated surveyor or recognized organization determines that the condition of the ship or its equipment does not substantially correspond with the particulars of the certificate or is such that the ship is not fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment, such surveyor or organization shall immediately ensure that corrective action is taken and shall in due course notify the Administration.
If such corrective action is not taken, the certificate shall be withdrawn and the Administration shall be notified immediately; and if the ship is in a port of another Party, the appropriate authorities of the port State shall also be notified immediately. When an officer of the Administration, a nominated surveyor or a recognized organization has informed the appropriate authorities of the port State, the Government of the port State concerned shall give such officer, surveyor or organization any necessary assistance to carry out their obligations under this regulation. When applicable, the Government of the port State concerned shall take such steps as will ensure that the ship shall not sail until it can proceed to sea or leave the port for the purpose of proceeding to the nearest appropriate repair yard available without presenting an unreasonable threat of harm to the marine environment.
3.4 In every case, the Administration concerned shall fully guarantee the completeness and efficiency of the survey and shall undertake to ensure the necessary arrangements to satisfy this obligation.
4.1 The condition of the ship and its equipment shall be maintained to conform with the provisions of the present Convention to ensure that the ship in all respects will remain fit to proceed to sea without presenting an unreasonable threat of harm to the marine environment.
4.2 After any survey of the ship under paragraph 1 of this regulation has been completed, no change shall be made in the structure, equipment, systems, fittings, arrangements or material covered by the survey, without the sanction of the Administration, except the direct replacement of such equipment and fittings.
4.3 Whenever an accident occurs to a ship or a defect is discovered, which substantially affects the integrity of the ship or the efficiency or completeness of its equipment covered by this Annex, the master or owner of the ship shall report at the earliest opportunity to the Administration, the recognized organization or the nominated surveyor responsible for issuing the relevant certificate, who shall cause investigations to be initiated to determine whether a survey, as required by paragraph 1 of this regulation, is necessary. If the ship is in a port of another Party, the master or owner shall also report immediately to the appropriate authorities of the port State and the nominated surveyor or recognized organization shall ascertain that such report has been made.
Regulation 7 Issue or endorsement of certificate 1 An International Oil Pollution Prevention Certificate shall be issued, after an initial or renewal survey in accordance with the provisions of regulation 6 of this Annex, to any oil tanker of 150 gross tonnage and above and any other ships of 400 gross tonnage and above which are engaged in voyages to ports or offshore terminals under the jurisdiction of other Parties to the present Convention.
2 Such certificate shall be issued or endorsed, as appropriate, either by the Administration or by any person or organization duly authorized by it. In every case, the Administration assumes full responsibility for the certificate.
Regulation 8 Issue or endorsement of certificate by another Government 1 The Government of a Party to the present Convention may, at the request of the Administration, cause a ship to be surveyed and, if satisfied that the provisions of this Annex are complied with, shall issue or authorize the issue of an International Oil Pollution Prevention Certificate to the ship and, where appropriate, endorse or authorize the endorsement of that certificate on the ship, in accordance with this Annex.
2 A copy of the certificate and a copy of the survey report shall be transmitted as early as possible to the Administration that requested the survey.
3 A certificate so issued shall contain a statement to the effect that it has been issued at the request of the Administration, and it shall have the same force and receive the same recognition as the certificate issued under regulation 7 of this Annex.
4 No International Oil Pollution Prevention Certificate or UNSP Barge Exemption Certificate shall be issued to a ship which is entitled to fly the flag of a State which is not a Party to the Convention.
Regulation 9 Form of certificate 1 The International Oil Pollution Prevention Certificate shall be drawn up in at least Spanish, French or English, in the form corresponding to the model given in appendix II to this Annex. If an official language of the issuing country is also used, this shall prevail in case of a dispute or discrepancy.
2 The International Oil Pollution Prevention Exemption Certificate for Unmanned Non-self-propelled (UNSP) Barges shall be drawn up in at least Spanish, French or English, in the form corresponding to the model given in appendix IV to this Annex. If an official language of the issuing country is also used, this shall prevail in case of a dispute or discrepancy.
Regulation 10 Duration and validity of certificate 1 An International Oil Pollution Prevention Certificate shall be issued for a period specified by the Administration, which shall not exceed five years.
2.1 Notwithstanding the requirements of paragraph 1 of this regulation, when the renewal survey is completed within three months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing certificate.
2.2 When the renewal survey is completed after the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from that date of expiry.
2.3 When the renewal survey is completed more than three months before the expiry date of the existing certificate, the new certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from that date of completion.
3 If a certificate is issued for a period of less than five years, the Administration may extend the validity of the certificate beyond the expiry date to the maximum period specified in paragraph 1 of this regulation, provided that the surveys referred to in regulations 6.1.3 and 6.1.4 of this Annex, applicable when a certificate is issued for a period of five years, are carried out as appropriate.
4 If a renewal survey has been completed and a new certificate cannot be issued or placed on board the ship before the expiry date of the existing certificate, the person or organization authorized by the Administration may endorse the existing certificate and such a certificate shall be accepted as valid for a further period which shall not exceed five months from the expiry date.
5 If a ship at the time when a certificate expires is not in a port in which it is to be surveyed, the Administration may extend the period of validity of the certificate, but this extension shall be granted only for the purpose of allowing the ship to complete its voyage to the port in which it is to be surveyed, and then only in cases where it appears proper and reasonable to do so. No certificate shall be extended for a period longer than three months, and a ship to which an extension is granted shall not, on its arrival in the port in which it is to be surveyed, be entitled by virtue of such extension to leave that port without having a new certificate. When the renewal survey is completed, the new certificate shall be valid to a date not exceeding five years from the date of expiry of the existing certificate before the extension was granted.
6 A certificate issued to a ship engaged on short voyages which has not been extended under the foregoing provisions of this regulation may be extended by the Administration for a period of grace of up to one month from the date of expiry stated on it. When the renewal survey is completed, the new certificate shall be valid to a date not exceeding five years from the date of expiry of the existing certificate before the extension was granted.
7 In special circumstances, as determined by the Administration, a new certificate need not be dated from the date of expiry of the existing certificate as required by paragraphs 2.2, 5 or 6 of this regulation. In these special circumstances, the new certificate shall be valid to a date not exceeding five years from the date of completion of the renewal survey.
8 If an annual or intermediate survey is completed before the period specified in regulation 6 of this Annex, then:
.1 The annual expiry date shown on the certificate shall be amended by endorsement to a date which shall not be more than three months later than the date on which the survey was completed; .2 The subsequent annual or intermediate survey required by regulation 6.1 of this Annex shall be completed at the intervals prescribed by that regulation using the new annual expiry date; and .3 The expiry date may remain unchanged provided one or more annual or intermediate surveys, as appropriate, are carried out so that the maximum intervals between the surveys prescribed by regulation 6.1 of this Annex are not exceeded.
9 A certificate issued under regulation 7 or 8 of this Annex shall cease to be valid in any of the following cases:
.1 If the relevant surveys are not completed within the intervals specified under regulation 6.1 of this Annex; .2 If the certificate is not endorsed in accordance with regulations 6.1.3 or 6.1.4 of this Annex; or .3 Upon transfer of the ship to the flag of another State. A new certificate shall only be issued when the Government issuing the new certificate is fully satisfied that the ship is in compliance with the requirements of regulations 6.4.1 and 6.4.2 of this Annex. In the case of a transfer between Parties, the Government of the Party whose flag the ship was formerly entitled to fly shall, if requested by the Administration of the other Party within three months after the transfer has taken place, transmit as quickly as possible copies of the certificate carried by the ship before the transfer and, if available, copies of the relevant survey reports.
Regulation 11 Port State control on operational requirements 1 A ship when in a port or an offshore terminal of another Party is subject to inspection by officers duly authorized by that Party concerning operational requirements under this Annex, where there are clear grounds for believing that the master or crew are not familiar with essential shipboard procedures relating to the prevention of oil pollution.
2 In the circumstances given in paragraph 1 of this regulation, the Party shall take such steps as will ensure that the ship shall not sail until the situation has been brought to order in accordance with the requirements of this Annex.
3 Procedures relating to the port State control prescribed in article 5 of the present Convention shall apply to this regulation.
4 Nothing in this regulation shall be construed to limit the rights and obligations of a Party carrying out control over operational requirements specifically provided for in the present Convention.
PART A – CONSTRUCTION Regulation 12 Tanks for oil residues (sludge) 1 Unless expressly provided otherwise, this regulation shall apply to every ship of 400 gross tonnage and above, provided that paragraph 3.5 of this regulation shall only be applied so far as is reasonable and practicable to ships delivered on or before 31 December 1979, as defined in regulation 1.28.1.
2 Oil residues (sludge) may be disposed of directly from the oil residue (sludge) tank or tanks to reception facilities through the standard discharge connection referred to in regulation 13, or to any other approved means of disposal of oil residues (sludge), such as an incinerator, an auxiliary boiler suitable for burning oil residues (sludge), or other acceptable means, which shall be noted in section 3.2 of the supplements to the IOPP Certificate, forms A or B.
3 One or more oil residue (sludge) tanks shall be provided, which:
.1 Shall have adequate capacity, having regard to the type of machinery and length of voyage, to receive the oil residues (sludge) which cannot otherwise be dealt with in accordance with the requirements of this Annex; .2 Shall be provided with a designated pump that is capable of taking suction from the oil residue (sludge) tank or tanks for disposal of oil residues (sludge) by the means described in regulation 12.2; .3 Shall have no discharge connections to the bilge system, oily bilge water holding tank(s), tank top or oily water separators, provided that:
.1 The tank or tanks may be provided with drains, with manually operated self-closing valves and arrangements for subsequent visual monitoring of the separated water from the settled sludge, that lead to an oily bilge water holding tank or a bilge well, or an alternative arrangement, provided such arrangement does not connect directly to the bilge discharge piping system; and .2 The sludge tank discharge piping and bilge-water piping may be connected to a common pipe leading to the standard discharge connection referred to in regulation 13. The connection of both systems to the possible common pipe leading to the standard discharge connection referred to in regulation 13 shall not allow for the transfer of sludge to the bilge system; .4 Shall have no piping connection directly overboard, other than the standard discharge connection referred to in regulation 13; and .5 Shall be designed and constructed so as to facilitate its cleaning and the discharge of residues to reception facilities.
4 Ships constructed before 1 January 2017 shall be arranged to comply with paragraph 3.3 of this regulation not later than the first renewal survey carried out on or after 1 January 2017.
Regulation 12A Oil fuel tank protection 1 This regulation shall apply to all ships with an aggregate oil fuel capacity of 600 m³ and above which are delivered on or after 1 August 2010, as defined in regulation 1.28.9 of this Annex.
2 The application of this regulation in determining the location of tanks used to carry oil fuel does not govern over the provisions of regulation 19 of this Annex.
3 For the purpose of this regulation, the following definitions shall apply:
.1 Oil fuel is any oil used as fuel for the propulsion and auxiliary machinery of the ship carrying such fuel.
.2 Load line draught (dS) is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to the summer freeboard to be assigned to the ship.
.3 Lightweight draught is the moulded draught at mid-length corresponding to the lightweight displacement.
.4 Partial load line draught (dP) is the lightweight draught plus 60% of the difference between the lightweight draught and the load line draught (dS). The partial load line draught shall be measured in metres.
.5 Waterline (dB) is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to 30% of the depth (DS).
.6 Breadth BS is the greatest moulded breadth of the ship, in metres, at or below the deepest load line draught (dS).
.7 Breadth BB is the greatest moulded breadth of the ship, in metres, at or below the waterline (dB).
.8 Depth (DS) is the moulded depth, in metres, measured at mid-length to the upper deck at side. For the purpose of the application, "upper deck" means the highest deck to which the transverse watertight bulkheads extend except the aft peak bulkheads.
.9 Length (L) is 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel, or the length from the foreside of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel, the waterline on which this length is measured shall be parallel to the designed waterline. The length (L) shall be measured in metres.
.10 Breadth (B) is the greatest moulded breadth of the ship, in metres, measured amidships to the moulded line of the frame in a ship with a metal shell and to the outer surface of the hull in a ship with a shell of any other material.
.11 Oil fuel tank is a tank in which oil fuel is carried, but excludes those tanks which would not contain oil fuel during normal operation of the ship, such as overflow tanks.
.12 Small liquid fuel tank is any liquid fuel tank whose maximum capacity does not exceed 30 m3.
.13 C is the total volume of liquid fuel on the ship, including that of small liquid fuel tanks, in m3, at 98% of tank capacity.
.14 Liquid fuel tank capacity is the volume of a tank, in m3, at a 98% fill level.
4 The provisions of this regulation shall apply to all liquid fuel tanks with the exception of small liquid fuel tanks defined in paragraph 3.12, provided that the total capacity of the excluded tanks does not exceed 600 m3.
5 No liquid fuel tank shall have a capacity greater than 2 500 m3.
6 In the case of ships whose total liquid fuel capacity is equal to or greater than 600 m3, except for self-elevating drilling units, liquid fuel tanks shall be located above the moulded line of the bottom shell plating, and in no case less than the distance h indicated below:
h = B/20 (m), or h = 2.0 m, whichever is less.
Minimum value of h = 0.76 m In the turn of the bilge area and in locations where the bilge turn is not clearly defined, the line defining the boundaries of the liquid fuel tank shall be parallel to the flat bottom amidships, as illustrated in figure 1.
7 In the case of ships whose total liquid fuel capacity is equal to or greater than 600 m3 but less than 5 000 m3, liquid fuel tanks shall be located inboard of the moulded line of the side shell plating, and in no case less than the distance w measured, as illustrated in figure 2, in any transverse section perpendicularly to the side shell plating, as indicated below:
w = 0.4 + 2.4 C/20000 (m), but minimum value of w = 1.0 m; however, for tanks with a liquid fuel capacity of less than 500 m3, the minimum value is 0.76 m.
8 In the case of ships whose total liquid fuel capacity is equal to or greater than 5 000 m3, liquid fuel tanks shall be located inboard of the moulded line of the side shell plating, and in no case less than the distance w measured, as illustrated in figure 2, in any transverse section perpendicularly to the side shell plating, as indicated below:
w = 0.5 + C/20000 (m), or w = 2.0 m, whichever is less.
Minimum value of w = 1.0 m 9 Liquid fuel piping located at a distance from the ship's bottom of less than h, as defined in paragraph 6, or at a distance from the ship's side of less than w, as defined in paragraphs 7 and 8, shall be fitted with valves or similar closing devices located within or adjacent to the liquid fuel tank. The valves shall be operable from an easily accessible enclosed space situated in a location that can be accessed from the navigation bridge or the propulsion machinery control station without having to traverse exposed freeboard or superstructure decks. The valves shall close in the event of a failure of the remote control system (fail-closed position) and shall remain closed while the ship is at sea whenever the tank contains liquid fuel, except during liquid fuel transfer operations.
10 Suction wells of liquid fuel tanks may penetrate the double bottom below the boundary line defining the distance h, provided that such wells are as small as possible and that the distance between the bottom of the well and the bottom shell plating is not less than 0.5 h.
11 As an alternative to the provisions of paragraphs 6 and 7 or 8, ships shall comply with the accidental liquid fuel outflow performance standard specified below:
.1 The level of protection against liquid fuel pollution in the event of collision or grounding shall be determined by calculating the mean oil outflow parameter as follows:
OM = 0.0157 - 1.14E-6 C for 600 m3 ≤ C < 5 000 m3 OM = 0.010 for C ≥ 5 000 m3 where:
OM = mean oil outflow parameter; C = total volume of liquid fuel.
.2 When calculating the mean oil outflow parameter, the following general assumptions shall be adopted:
.2.1 the ship shall be assumed loaded to the partial load line draft (dp), with the keel level and without trim; .2.2 all liquid fuel tanks shall be assumed to be 98% full of their volumetric capacity; .2.3 in general terms, the nominal density of the liquid fuel (ρn) shall be considered to be 1,000 kg/m3. If the density of the liquid fuel is specifically limited to a lower value, that lower value may be applied; and .2.4 for the purposes of outflow calculations, the permeability of each liquid fuel tank shall be considered to be 0.99, unless proven otherwise.
.3 When combining the oil outflow parameters, the following assumptions shall be adopted:
.3.1 The mean oil outflow shall be calculated separately for side damage and for bottom damage, and then both results shall be combined into a non-dimensional oil outflow parameter, OM, as follows:
OM = (OMS + OMB) / C where:
OMS = mean outflow for a side damage, in m3 OMB = mean outflow for a bottom damage, in m3 C = total volume of liquid fuel.
.3.2 In case of bottom damage, the mean outflow shall be calculated separately for tides of 0 m and -2.5 m, and the resulting mean outflow shall be calculated as follows:
OMB = 0.7 OMB(0) + 0.3 OMB(2.5) where:
OMB(0) = mean outflow for a tide of 0 m; and OMB(2.5) = mean outflow for a tide of -2.5 m, in m3.
.4 The mean outflow for a side damage (OMS) shall be calculated as follows:
OMS = ∑ PS(i) OS(i) where:
i = each liquid fuel tank considered; n = total number of liquid fuel tanks; PS(i) = the probability of penetration to liquid fuel tank i from side damage, calculated in accordance with paragraph 11.6 of this regulation; OS(i) = the outflow, in m3, due to a side damage of liquid fuel tank i, which is assumed equal to the total volume of liquid fuel in tank i at 98% of its capacity.
.5 The mean outflow for a bottom damage shall be calculated, with respect to each tide, as follows:
.5.1 OMB(0) = ∑ PB(i) OB(i) CDB(i) where:
i = each liquid fuel tank considered; n = total number of liquid fuel tanks; PB(i) = the probability of penetration to liquid fuel tank i from bottom damage, calculated in accordance with paragraph 11.7 of this regulation; OB(i) = the outflow from liquid fuel tank i, in m3, calculated in accordance with paragraph 11.5.3 of this regulation; and CDB(i) = factor to account for oil capture as defined in paragraph 11.5.4.
.5.2 OMB(2.5) = ∑ PB(i) OB(i) CDB(i) where:
i, n, PB(i) and CDB(i) = as defined in subparagraph .5.1 above; OB(i) = the outflow from liquid fuel tank i, in m3, after the tide change.
.5.3 The oil outflow OB(i) for each liquid fuel tank shall be calculated by applying the principles of hydrostatic pressure equilibrium, in accordance with the following assumptions:
.5.3.1 The ship shall be assumed grounded, with the keel level and without trim, and the draft of the grounded ship before the tide change is equal to the partial load line draft (dp).
.5.3.2 The liquid fuel level after damage shall be calculated as follows:
hF = {(dp + tc - Zr)(ρs / ρn)} where:
hF = height of the liquid fuel surface above Zr, in m; dp = partial load line draft tc = tide change, in m. Negative tidals are expressed with negative values; Zr = height, in m, of the lowest point in the liquid fuel tank above the baseline; ρs = density of seawater, which shall be assumed to be 1,025 kg/m3; and ρn = nominal density of the liquid fuel, as defined in paragraph 11.2.3.
.5.3.3 The oil outflow OB(i) for any tank bounding the bottom shell plating shall be considered not less than the value resulting from the following formula, but not greater than the tank capacity:
OB(i) = Hw . A, where:
Hw = 1.0 m, when YB = 0; Hw = BB/50 but not greater than 1.0 m, when YB ≥ BB/5 or 11.5 m, whichever is less. Hw shall be measured upward from the flat bottom line amidships. In the turn of the bilge area and in locations where the bilge turn is not clearly defined, Hw shall be measured from a line parallel to the flat bottom amidships, shown as distance "h" in figure 1. For YB values outboard of BB/5 or 11.5 m, whichever is less, Hw shall be obtained by linear interpolation. YB = minimum value of YB along the liquid fuel tank where, at any given position, YB is the transverse distance between the side shell at the waterline dB and the tank at or below the waterline dB; A = maximum projected horizontal area of the liquid fuel tank up to the level of Hw from the tank bottom.
.5.4 In case of bottom damage, a portion of the outflow from a liquid fuel tank may be captured by non-oil compartments. This effect is approximated by applying the factor CDB(i) for each tank, as follows:
CDB(i) = 0.6 for liquid fuel tanks that are bounded from below by non-oil compartments; CDB(i) = 1.0 in other cases.
Figure 3 - Dimensions for the calculation of minimum oil outflow .6 The probability Ps of a compartment being breached due to side damage shall be calculated as follows:
.6.1 Ps = PsL . Psv . PST where:
PsL = (1 - PSf - PSa) = probability that the damage extends to the longitudinal zone bounded by Xa and Xf; Psv = (1 - PSu - PSl) = probability that the damage extends to the vertical zone bounded by Zl and Zu; PST = (1 - PSy) = probability that the damage extends transversally outboard of the limit defined by y; .7 Psa, Psf, Psl and Psu shall be determined by linear interpolation from the table of probabilities for side damage given in paragraph 11.6.3, and Psv shall be calculated using the formulas given in paragraph 11.6.3, where:
PSa = probability that the damage is located entirely aft of the point Xa/L; PSf = probability that the damage is located entirely forward of the point Xf/L; PSl = probability that the damage is located entirely below the tank; PSu = probability that the damage is located entirely above the tank; and PSy = probability that the damage is located entirely outboard of the tank.
The compartment boundaries Xa, Xf, Zl, Zu, and y shall be established as follows:
Xa = longitudinal distance between the aft end of L and the aftmost point of the compartment considered, in m; Xf = longitudinal distance between the aft end of L and the foremost point of the compartment considered, in m; Zl = vertical distance between the moulded baseline and the lowest point of the compartment considered, in m. If Zl is greater than Ds, Zl shall be considered equal to Ds; Zu = vertical distance between the moulded baseline and the highest point of the compartment considered, in m. If Zu is greater than Ds, Zu shall be considered equal to Ds; and y = minimum horizontal distance measured perpendicularly to the longitudinal axis, between the compartment considered and the outer side shell, in m.
In the turn of the bilge area, the value of y need not be considered below a distance h above the baseline, where h is less than B/10, 3 m, or the top of the tank.
.6.3 Table of probabilities for side damage
| Xa/L | PSa | Xf/L | PSf | Zl/Ds | PSl | Zu/Ds | PSu |
|---|---|---|---|---|---|---|---|
| 0.00 | 0.000 | 0.00 | 0.967 | 0.00 | 0.000 | 0.00 | 0.968 |
| 0.05 | 0.000 | 0.05 | 0.917 | 0.05 | 0.000 | 0.05 | 0.952 |
| 0.10 | 0.001 | 0.10 | 0.867 | 0.10 | 0.001 | 0.10 | 0.931 |
| 0.15 | 0.003 | 0.15 | 0.817 | 0.15 | 0.003 | 0.15 | 0.905 |
| 0.20 | 0.007 | 0.20 | 0.767 | 0.20 | 0.007 | 0.20 | 0.873 |
| 0.25 | 0.013 | 0.25 | 0.717 | 0.25 | 0.013 | 0.25 | 0.836 |
| 0.30 | 0.021 | 0.30 | 0.667 | 0.30 | 0.021 | 0.30 | 0.794 |
| 0.35 | 0.033 | 0.35 | 0.617 | 0.35 | 0.033 | 0.35 | 0.749 |
| 0.40 | 0.048 | 0.40 | 0.567 | 0.40 | 0.048 | 0.40 | 0.700 |
| 0.45 | 0.068 | 0.45 | 0.517 | 0.45 | 0.068 | 0.45 | 0.650 |
| 0.50 | 0.093 | 0.50 | 0.467 | 0.50 | 0.093 | 0.50 | 0.599 |
| 0.55 | 0.124 | 0.55 | 0.417 | 0.55 | 0.124 | 0.55 | 0.548 |
| 0.60 | 0.162 | 0.60 | 0.367 | 0.60 | 0.162 | 0.60 | 0.498 |
| 0.65 | 0.211 | 0.65 | 0.317 | 0.65 | 0.211 | 0.65 | 0.449 |
| 0.70 | 0.271 | 0.70 | 0.267 | 0.70 | 0.271 | 0.70 | 0.401 |
| 0.75 | 0.347 | 0.75 | 0.217 | 0.75 | 0.347 | 0.75 | 0.354 |
| 0.80 | 0.443 | 0.80 | 0.167 | 0.80 | 0.443 | 0.80 | 0.309 |
| 0.85 | 0.564 | 0.85 | 0.117 | 0.85 | 0.564 | 0.85 | 0.265 |
| 0.90 | 0.717 | 0.90 | 0.067 | 0.90 | 0.717 | 0.90 | 0.223 |
| 0.95 | 0.966 | 0.95 | 0.017 | 0.95 | 0.966 | 0.95 | 0.184 |
| 1.00 | 1.000 | 1.00 | 0.000 | 1.00 | 1.000 | 1.00 | 0.150 |
PSy shall be calculated as follows:
PSy = (y / BB) but not greater than 1.0 .7 The probability PB of a compartment being breached due to bottom damage shall be calculated as follows:
.7.1 PB = PBL . PBT . PBV where:
PBL = (1 - PBf - PBa) = probability that the damage extends to the longitudinal zone bounded by Xa and Xf; PBT = (1 - PBP - PBS) = probability that the damage extends to the transverse zone bounded by YP and YS; and PBV = (1 - PBz) = probability that the damage extends vertically above the limit defined by z; .7.2 PBa, PBf, PBP and PBS shall be determined by linear interpolation from the table of probabilities for bottom damage given in paragraph 11.7.3, while PBz shall be calculated using the formulas given in paragraph 11.7.3, where:
PBa = probability that the damage is located entirely aft of the point Xa/L; PBf = probability that the damage is located entirely forward of the point Xf/L; PBP = probability that the damage is located entirely to port of the tank; PBS = probability that the damage is located entirely to starboard of the tank; and PBz = probability that the damage is located entirely below the tank.
The compartment boundaries Xa, Xf, YP, YS and z shall be established as follows:
Xa and Xf as defined in paragraph 11.6.2; YP = transverse distance between the portmost point of the compartment located at or below the waterline dB and a vertical plane located at a distance equivalent to BB/2 to starboard of the ship's longitudinal axis; YS = transverse distance between the starboardmost point of the compartment located at or below the waterline dB and a vertical plane located at a distance equivalent to BB/2 to starboard of the ship's longitudinal axis; and z = minimum value of z along the compartment when, at any given longitudinal position, z is the distance measured vertically between the lowest point of the bottom shell at that longitudinal position and the lowest point of the compartment at that same position.
.7.3 Table of probabilities for bottom damage
| Xa/L | PBa | Xf/L | PBf | Yp/BB | PBP | Ys/BB | PBS |
|---|---|---|---|---|---|---|---|
| 0.00 | 0.000 | 0.00 | 0.969 | 0.00 | 0.000 | 0.00 | 0.969 |
| 0.05 | 0.002 | 0.05 | 0.953 | 0.05 | 0.002 | 0.05 | 0.953 |
| 0.10 | 0.008 | 0.10 | 0.936 | 0.10 | 0.008 | 0.10 | 0.936 |
| 0.15 | 0.017 | 0.15 | 0.916 | 0.15 | 0.017 | 0.15 | 0.916 |
| 0.20 | 0.029 | 0.20 | 0.894 | 0.20 | 0.029 | 0.20 | 0.894 |
| 0.25 | 0.046 | 0.25 | 0.870 | 0.25 | 0.046 | 0.25 | 0.870 |
| 0.30 | 0.067 | 0.30 | 0.843 | 0.30 | 0.067 | 0.30 | 0.843 |
| 0.35 | 0.093 | 0.35 | 0.812 | 0.35 | 0.093 | 0.35 | 0.812 |
| 0.40 | 0.125 | 0.40 | 0.778 | 0.40 | 0.125 | 0.40 | 0.778 |
| 0.45 | 0.165 | 0.45 | 0.739 | 0.45 | 0.165 | 0.45 | 0.739 |
| 0.50 | 0.215 | 0.50 | 0.696 | 0.50 | 0.215 | 0.50 | 0.696 |
| 0.55 | 0.275 | 0.55 | 0.648 | 0.55 | 0.275 | 0.55 | 0.648 |
| 0.60 | 0.348 | 0.60 | 0.595 | 0.60 | 0.348 | 0.60 | 0.595 |
| 0.65 | 0.429 | 0.65 | 0.538 | 0.65 | 0.429 | 0.65 | 0.538 |
| 0.70 | 0.514 | 0.70 | 0.477 | 0.70 | 0.514 | 0.70 | 0.477 |
| 0.75 | 0.607 | 0.75 | 0.409 | 0.75 | 0.607 | 0.75 | 0.409 |
| 0.80 | 0.705 | 0.80 | 0.333 | 0.80 | 0.705 | 0.80 | 0.333 |
| 0.85 | 0.808 | 0.85 | 0.252 | 0.85 | 0.808 | 0.85 | 0.252 |
| 0.90 | 0.913 | 0.90 | 0.168 | 0.90 | 0.913 | 0.90 | 0.168 |
| 0.95 | 0.977 | 0.95 | 0.080 | 0.95 | 0.977 | 0.95 | 0.080 |
| 1.00 | 1.000 | 1.00 | 0.000 | 1.00 | 1.000 | 1.00 | 0.000 |
PBz shall be calculated as follows:
PBz = (z / Ds) but not greater than 1.0 .8 For the purposes of maintenance and inspection, any liquid fuel tank that does not border the outer shell plating shall not be located closer to the bottom shell plating than the minimum value of h specified in paragraph 6, nor closer to the side shell plating than the applicable minimum value of w specified in paragraph 7 or paragraph 8.
12 When approving the design and construction of ships to be built in accordance with this regulation, Administrations shall have due regard to the general safety aspects, including the need for the maintenance and inspection of side and double-bottom tanks or spaces.
Regulation 13 Standard Discharge Connection To enable the pipe of reception facilities to be coupled with the ship's discharge pipeline for residues from machinery space bilges and oily residue (sludge) tanks, both shall be fitted with a standard connection whose dimensions shall be in accordance with those indicated in the following table:
Standard Dimensions of Flanges for Discharge Connections | Description | Dimension | | --- | --- | | Outside diameter | 215 mm | | Inner diameter | According to the pipe outside diameter | | Bolt circle diameter | 183 mm | | Slots in flange | 6 holes, 22 mm in diameter equidistantly placed on a bolt circle of the above diameter, slotted to the flange periphery with a slot width of 22 mm | | Flange thickness | 20 mm | | Bolts and nuts: quantity and diameter | 6, each of 20 mm in diameter and of suitable length | | The flange is designed to accept pipes up to a maximum internal diameter of 125 mm and shall be of steel or other equivalent material having a flat face. The flange, together with a gasket of oil-resistant material, shall be suitable for a working pressure of 600 kPa. | PART B: EQUIPMENT Regulation 14 Oil Filtering Equipment 1 Except as specified in paragraph 3 of this regulation, any ship of 400 gross tonnage and above but less than 10,000 gross tonnage shall be fitted with oil filtering equipment complying with paragraph 6 of this regulation. Any such ship which may discharge into the sea ballast water retained in fuel oil tanks in accordance with regulation 16.2 shall comply with paragraph 2 of this regulation.
2 Except as specified in paragraph 3 of this regulation, any ship of 10,000 gross tonnage and above shall be fitted with oil filtering equipment complying with paragraph 7 of this regulation.
3 Certain ships, such as hotel ships, storage vessels, etc., which are stationary except for relocation voyages without cargo need not be fitted with oil filtering equipment. Such ships shall be fitted with a storage tank of a volume satisfactory to the Administration for the total retention on board of all oily bilge water. All oily bilge water shall be retained on board for subsequent discharge to reception facilities.
4 The Administration shall ensure that ships of less than 400 gross tonnage are equipped, as far as practicable, with installations to retain on board oil or oily mixtures, or to discharge them in accordance with the requirements of regulation 15.6 of this Annex.
5 The Administration may waive the requirements of paragraphs 1 and 2 of this regulation for:
.1 any ship engaged exclusively on voyages within special areas or in Arctic waters; or .2 any ship issued with the relevant certificate under the International Code of Safety for High-Speed Craft (or to which that Code applies by reason of its size and design), and engaged on regular scheduled services with a turn-around time not exceeding 24 hours, including relocation voyages of these vessels without passengers or cargo; .3 with respect to the provisions of subparagraphs .1 and .2 above, the following conditions shall be met:
.3.1 the ship is fitted with a holding tank which, in the opinion of the Administration, has a volume adequate for the total retention on board of all oily bilge water; .3.2 all oily bilge water is retained on board for subsequent discharge to reception facilities; .3.3 the Administration has ascertained that adequate reception facilities are available to receive such oily bilge water in a sufficient number of ports or terminals where the ship calls; .3.4 when required, the International Oil Pollution Prevention Certificate is endorsed to confirm that the ship is solely engaged on voyages within special areas or Arctic waters, or has been accepted as a high-speed craft for the purposes of this regulation, and the service is recorded; and .3.5 the quantity, time, and port of discharge are recorded in the Oil Record Book, Part I.
6 The oil filtering equipment referred to in paragraph 1 of this regulation shall be of a design approved by the Administration and shall be such that the oil content of any oily mixture discharged into the sea after passing through the system does not exceed 15 ppm. In considering the design of such equipment, the Administration shall have regard to the specification recommended by the Organization.
7 The oil filtering equipment referred to in paragraph 2 of this regulation shall comply with the provisions of paragraph 6 of this regulation. In addition, it shall be provided with alarm arrangements to indicate when this level cannot be maintained. The system shall also be provided with arrangements to ensure that any discharge of oily mixtures is automatically stopped when the oil content of the effluent exceeds 15 ppm. In considering the design of such equipment and arrangements, the Administration shall have regard to the specification recommended by the Organization.
PART C: CONTROL OF OPERATIONAL DISCHARGES OF OIL Regulation 15 Control of Discharge of Oil 1 Subject to the provisions of regulation 4 of this Annex and paragraphs 2, 3, and 6 of this regulation, any discharge into the sea of oil or oily mixtures from ships shall be prohibited.
A Discharges Outside Special Areas with the Exception of Arctic Waters 2 Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnage and above shall be prohibited, unless all the following conditions are satisfied:
.1 the ship is proceeding en route; .2 the oily mixture is processed through oil filtering equipment complying with regulation 14 of this Annex; .3 the oil content of the effluent without dilution does not exceed 15 ppm; .4 the oily mixture does not originate from cargo pump-room bilges on oil tankers; and .5 the oily mixture, in the case of oil tankers, is not mixed with oil cargo residues.
B Discharges in Special Areas 3 Any discharge into the sea of oil or oily mixtures from ships of 400 gross tonnage and above shall be prohibited, unless all the following conditions are satisfied:
.1 the ship is proceeding en route; .2 the oily mixture is processed through oil filtering equipment complying with regulation 14.7 of this Annex; .3 the oil content of the effluent without dilution does not exceed 15 ppm; .4 the oily mixture does not originate from cargo pump-room bilges on oil tankers; and .5 the oily mixture, in the case of oil tankers, is not mixed with oil cargo residues.
4 In respect of the Antarctic area, any discharge into the sea of oil or oily mixtures from any ship shall be prohibited.
5 Nothing in this regulation shall prohibit a ship on a voyage only part of which is in a special area from making discharges outside the special area in accordance with paragraph 2 of this regulation.
C Requirements for Ships of Less than 400 Gross Tonnage in all Areas Except the Antarctic Area and Arctic Waters 6 In the case of ships of less than 400 gross tonnage, all oil and oily mixtures shall be retained on board for subsequent discharge to reception facilities, or discharged into the sea in accordance with the following provisions:
.1 the ship is proceeding en route; .2 the ship has in operation equipment of a design approved by the Administration that ensures that the oil content of the effluent without dilution does not exceed 15 ppm; .3 the oily mixture does not originate from cargo pump-room bilges on oil tankers; and .4 the oily mixture, in the case of oil tankers, is not mixed with oil cargo residues.
D General Requirements 7 Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of a ship or its wake, the Governments of the Parties to the present Convention shall, to the extent they are reasonably able to do so, promptly investigate the facts to determine whether there has been a violation of the provisions of this regulation. The investigation shall include, in particular, the wind and sea conditions, the track and speed of the ship, other possible sources of the visible traces in the vicinity, and all relevant oil discharge records.
8 No discharge into the sea shall contain chemicals or any other substance in quantities or concentrations which are hazardous to the marine environment, nor any addition of chemicals or other substances introduced for the purpose of circumventing the conditions of discharge specified in this regulation.
9 Oil residues which cannot be discharged into the sea in compliance with this regulation shall be retained on board for subsequent discharge to reception facilities.
Regulation 16 Segregation of Oil and Water Ballast and Carriage of Oil in Forepeak Tanks 1 Subject to the provisions of paragraph 2 of this regulation, ships delivered after 31 December 1979, as defined in regulation 1.28.2, of 4,000 gross tonnage and above other than oil tankers, and oil tankers delivered after 31 December 1979, as defined in regulation 1.28.2, of 150 gross tonnage and above, shall not carry ballast water in any liquid fuel tank.
2 Where it is necessary to carry large quantities of liquid fuel, non-clean ballast water shall be carried in fuel oil tanks, such ballast water shall be discharged to reception facilities or into the sea in accordance with the provisions of regulation 15 using the equipment specified in regulation 14.2 of this Annex, and an entry shall be made in the Oil Record Book.
3 In ships of 400 gross tonnage and above, for which the building contract is placed after 1 January 1982 or, in the absence of a building contract, the keel of which is laid or which are at a similar stage of construction after 1 July 1982, oil shall not be carried in forepeak tanks or in tanks forward of the collision bulkhead.
4 All ships to which paragraphs 1 and 3 of this regulation do not apply shall comply with the provisions of those paragraphs as far as is reasonable and practicable.
Regulation 17 Oil Record Book, Part I – Machinery Space Operations 1 Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book, Part I (Machinery Space Operations). The Oil Record Book, whether or not it forms part of the official logbook, or whether or not it is an electronic record book which the Administration shall approve taking into account the guidelines developed by the Organization, shall be in the form specified in appendix III of this Annex.
2 Whenever any of the following machinery space operations takes place in the ship, an appropriate entry shall be made in the Oil Record Book, Part I, on a tank-to-tank basis where appropriate:
.1 ballasting or cleaning of liquid fuel tanks; .2 discharge of dirty ballast or cleaning water from liquid fuel tanks; .3 collection and disposal of oil residues (sludge); .4 discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces; and .5 bunkering of fuel or lubricating oil.
3 In the event of an accidental or other exceptional discharge of oil or an oily mixture of the kind referred to in regulation 4 of this Annex, or if such a discharge occurs which is not among the exceptions provided for in that regulation, an entry shall be made in the Oil Record Book, Part I, explaining the circumstances of and the reasons for the discharge.
4 Each operation described in paragraph 2 of this regulation shall be promptly recorded in full detail in the Oil Record Book, Part I, so that all the entries in the book are appropriate to that operation. Each entry in respect of a completed operation shall be signed by the officer or officers in charge of the operations concerned, and each completed page or group of electronic entries shall be endorsed by the master of the ship. The entries in the Oil Record Book, Part I, for ships holding an International Oil Pollution Prevention Certificate, shall be at least in Spanish, French or English. In case of dispute or discrepancy, the entries made in an official national language of the State whose flag the ship is entitled to fly shall prevail.
5 In the event of any failure of the oil filtering equipment, an entry shall be made in the Oil Record Book, Part I.
6 The Oil Record Book, Part I, shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board the ship. It shall be preserved for a period of three years after the last entry has been made.
7 The competent authority of the Government of a Party to the present Convention may inspect the Oil Record Book, Part I, on board any ship to which this Annex applies while the ship is in one of its ports or offshore terminals, and may make a copy of any entry in that book and request the master of the ship to certify that the copy is a true copy of the entry in question. Any copy that has been certified by the master of the ship as a true copy of an entry in the Oil Record Book, Part I, shall be admissible in any judicial proceedings as evidence of the facts stated therein. The inspection of an Oil Record Book, Part I, and the taking of certified copies by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship unnecessary delay.
PART A: CONSTRUCTION Regulation 18 Segregated Ballast Tanks Oil tankers of 20,000 tonnes deadweight and above delivered after 1 June 1982 1 Every crude oil tanker of 20,000 tonnes deadweight and above and every product carrier of 30,000 tonnes deadweight and above delivered after 1 June 1982, as defined in regulation 1.28.4, shall be provided with segregated ballast tanks and shall comply with the provisions of paragraphs 2, 3 and 4, or paragraph 5 of this regulation, as appropriate.
2 The capacity of the segregated ballast tanks shall be so determined that the ship may operate safely on ballast voyages without recourse to the use of cargo tanks for water ballast except as provided for in paragraphs 3 or 4 of this regulation. In all cases, however, the minimum capacity of segregated ballast tanks shall be such that, in any ballast condition at any part of the voyage, including the lightweight condition with segregated ballast only, the following requirements for the ship's draughts and trim can be met:
.1 the moulded draught amidships (dm), expressed in metres (without taking into account any ship's deformation), shall not be less than: dm = 2.0 + 0.02L; .2 the draughts at the forward and after perpendiculars shall correspond to those determined by the draught amidships (dm), as specified in paragraph 2.1 of this regulation, with a trim by the stern of not more than 0.015L; and .3 in any case, the draught at the after perpendicular shall never be less than that necessary to ensure full immersion of the propeller(s).
3 In no case shall ballast water be carried in cargo tanks except:
.1 on those rare voyages when weather conditions are so severe that, in the opinion of the master, it is necessary to carry additional ballast water in cargo tanks for the safety of the ship; and .2 in exceptional cases where the particular character of the service of an oil tanker makes it necessary to carry ballast water in excess of the quantity required under paragraph 2 of this regulation, provided that such service falls within the category of exceptional cases as established by the Organization.
Such additional ballast water shall be processed and discharged in accordance with regulation 34 of this Annex, and an appropriate entry shall be made in the Oil Record Book, Part II, referred to in regulation 36 of this Annex.
4 In the case of crude oil tankers, the additional ballast permitted in paragraph 3 of this regulation shall be carried in cargo tanks only if such tanks have been crude oil washed in accordance with regulation 35 of this Annex, prior to departure from an oil unloading port or terminal.
5 Notwithstanding the provisions of paragraph 2 of this regulation, the segregated ballast conditions for oil tankers less than 150 metres in length shall be to the satisfaction of the Administration.
Crude oil tankers of 40,000 tonnes deadweight and above delivered on or before 1 June 1982 6 Subject to the provisions of paragraph 7 of this regulation, every crude oil tanker of 40,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, shall be provided with segregated ballast tanks and shall comply with the requirements of paragraphs 2 and 3 of this regulation.
7 Instead of being provided with segregated ballast tanks, crude oil tankers referred to in paragraph 6 of this regulation may operate with a cargo tank cleaning procedure using crude oil washing in accordance with regulations 33 and 35 of this Annex, unless the crude oil tanker concerned is intended to carry crude oil which is not suitable for crude oil washing.
Product carriers of 40,000 tonnes deadweight and above delivered on or before 1 June 1982 8 Every product carrier of 40,000 tonnes deadweight and above delivered on or before 1 June 1982, as defined in regulation 1.28.3, shall be provided with segregated ballast tanks and shall comply with the requirements of paragraphs 2 and 3 of this regulation, or, alternatively, shall operate with dedicated clean ballast tanks in accordance with the following provisions:
.1 The product carrier shall have adequate tank capacity, dedicated solely to the carriage of clean ballast as defined in regulation 1.17 of this Annex, to meet the requirements of paragraphs 2 and 3 of this regulation; .2 The arrangements and operational procedures for dedicated clean ballast tanks shall comply with the requirements established by the Administration. Such requirements shall contain, at a minimum, all the provisions of the Revised Specifications for Oil Tankers with Dedicated Clean Ballast Tanks adopted by the Organization by resolution A.495(XII); .3 The product carrier shall be equipped with an oil content meter approved by the Administration, based on the specifications recommended by the Organization, to enable supervision of the oil content in the ballast water being discharged.
.4 Every product carrier operating with dedicated clean ballast tanks shall be provided with a Dedicated Clean Ballast Tank Operation Manual detailing the system and specifying operational procedures. This Manual shall be to the satisfaction of the Administration and shall contain all the information set out in the specifications referred to in subparagraph 8.2 of this regulation. If an alteration affecting the dedicated clean ballast tank system is made, the Operation Manual shall be updated accordingly.
Oil tankers considered as segregated ballast oil tankers 9 Any oil tanker which is not required to be provided with segregated ballast tanks in accordance with paragraphs 1, 6 or 8 of this regulation may, however, be considered as a segregated ballast oil tanker, provided that it complies with the requirements of paragraphs 2 and 3 or paragraph 5 of this regulation, as appropriate.
Oil tankers delivered on or before 1 June 1982 having special ballast arrangements 10 Oil tankers delivered on or before 1 June 1982, as defined in regulation 1.28.3, having special ballast arrangements.
.1 Where an oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, is so constructed or operates in such a way that it complies at all times with the draught and trim requirements of paragraph 2 of this regulation without recourse to the use of water ballast, it shall be considered to comply with the segregated ballast tank requirements referred to in paragraph 6 of this regulation, provided that all of the following conditions are met:
.1.1 the operational procedures and ballast arrangements are approved by the Administration; .1.2 agreement is reached between the Administration and the interested Governments of the port States Parties to the present Convention when the draught and trim requirements are met through an operational procedure; and .1.3 the International Oil Pollution Prevention Certificate includes an endorsement to the effect that the oil tanker is operating with special ballast arrangements.
.2 In no case shall ballast water be carried in oil tanks except on those rare voyages when weather conditions are so severe that, in the opinion of the master, it is necessary to carry additional ballast water in cargo tanks for the safety of the ship. Such additional ballast water shall be processed and discharged in accordance with regulation 34 and in compliance with the requirements of regulations 29, 31 and 32 of this Annex, and an entry shall be made in the Oil Record Book referred to in regulation 36 of this Annex.
.3 An Administration which has endorsed a certificate in accordance with subparagraph 10.1.3 of this regulation shall communicate to the Organization the particulars thereof for circulation to the Parties to the present Convention.
Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979 11 Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979, as defined in regulation 1.28.2, shall be provided with segregated ballast tanks and shall comply with the requirements of paragraphs 2, 3 and 4, or paragraph 5 of this regulation, as appropriate.
Location of segregated ballast as protective location 12 Location of segregated ballast spaces as protective location.
In every crude oil tanker of 20,000 tonnes deadweight and above and in every product carrier of 30,000 tonnes deadweight and above delivered after 1 June 1982, as defined in regulation 1.28.4, except those oil tankers complying with regulation 19, the segregated ballast tanks required to provide the capacity to comply with the requirements of paragraph 2 of this regulation, which are located within the cargo tank length, shall be arranged in accordance with the requirements of paragraphs 13, 14 and 15 of this regulation to provide some protection against oil outflow in the event of grounding or collision.
13 Segregated ballast tanks and spaces other than oil tanks within the cargo tank length (Lt) shall be so arranged as to comply with the following requirement:
where:
PAC = area, in square metres, of the side shell plating corresponding to each segregated ballast tank or space other than an oil tank, based on projected moulded dimensions, PAS = area, in square metres, of the bottom shell plating corresponding to each such tank or space, based on projected moulded dimensions, Lt = length, in metres, between the forward and after extremities of the cargo tanks, B = maximum breadth of the ship, in metres, as defined in regulation 1.22 of this Annex, D = moulded depth, in metres, measured vertically from the top of the keel to the top of the freeboard deck beam amidships, at side. In ships having rounded gunwales, the moulded depth shall be measured to the point of intersection of the moulded lines of the deck and side shell plating, as if the gunwale were of angular design, J = 0.45 for oil tankers of 20,000 tonnes deadweight, 0.30 for oil tankers of 200,000 tonnes deadweight and above, subject to the provisions of paragraph 14 of this regulation.
For intermediate values of deadweight, the value of J shall be determined by linear interpolation.
Whenever the symbols given in this paragraph appear in this regulation, they have the meaning assigned to them in this paragraph.
14 For oil tankers of 200,000 tonnes deadweight and above, the value of J may be reduced as follows:
where:
a = 0.25 for oil tankers of 200,000 tonnes deadweight, a = 0.40 for oil tankers of 300,000 tonnes deadweight, a = 0.50 for oil tankers of 420,000 tonnes deadweight and above.
For intermediate values of deadweight, the value of a shall be determined by linear interpolation.
Oc = as defined in regulation 25.1.1 of this Annex; Os = as defined in regulation 25.1.2 of this Annex; OA = allowable oil outflow, as required by regulation 26.2 of this Annex.
15 In determining the values of PAC and PAS for segregated ballast tanks and spaces other than oil tanks, the following shall apply:
.1 the minimum width of each wing tank or space that extends for the full depth of the ship's side or from the deck to the top of the double bottom shall be not less than 2 m. This width shall be measured inboard from the side, perpendicularly to the centreline. Where a lesser width is provided, the wing tank or space shall not be taken into account when calculating the protective area PAC; and .2 the minimum vertical depth of each double bottom tank or space shall be B/15 or 2 m, whichever is the lesser. Where a lesser depth is provided, the bottom tank or space shall not be taken into account when calculating the protective area PAS.
The minimum width and depth of wing tanks and double bottom tanks shall be measured clear of the bilge area and, in the case of minimum width, clear of any rounded gunwale.
Regulation 19 Requirements for double hull and double bottom for oil tankers delivered on or after 6 July 1996 1 This regulation shall apply to oil tankers of 600 tonnes deadweight and above delivered on or after 6 July 1996, as defined in regulation 1.28.6, as follows:
2 Every oil tanker of 5,000 tonnes deadweight and above shall:
.1 comply with the requirements of paragraph 3 of this regulation, in lieu of paragraphs 12 to 15 of regulation 18, as applicable, unless it is subject to the provisions of paragraphs 4 and 5 of this regulation; and .2 comply with the requirements of regulation 28.7, if applicable.
3 The entire cargo tank length shall be protected by ballast tanks or spaces other than tanks intended for the carriage of oil, as follows:
.1 Wing tanks or spaces Wing tanks or spaces shall extend for the full depth of the ship's side or from the top of the double bottom to the uppermost deck, disregarding any rounded gunwale where fitted. They shall be arranged such that the cargo tanks are located inboard of the moulded line of the side shell plating, nowhere less than the distance w which, as shown in figure 1, is measured at any cross-section perpendicular to the side shell, as specified below:
The minimum value of w is 1.0 m.
.2 Double bottom tanks or spaces At any cross-section, the depth of each double bottom tank or space shall be such that the distance h between the bottom of the cargo tanks and the moulded line of the bottom shell plating, measured perpendicular to the bottom shell plating as shown in figure 1, is not less than specified below:
h = B/15 (m) or h = 2.0 m, whichever is the lesser.
The minimum value of h is 1.0 m.
.3 Turn of bilge area or at locations without a clearly defined turn of bilge When the distances h and w are different, the value w shall have preference at levels exceeding 1.5 h above the baseline, as shown in figure 1.
.4 Aggregate capacity of ballast tanks On crude oil tankers of 20,000 tonnes deadweight and above and product carriers of 30,000 tonnes deadweight and above, the aggregate capacity of wing tanks, double bottom tanks and forepeak and afterpeak tanks shall not be less than the capacity of segregated ballast tanks necessary to meet the requirements of regulation 18 of this Annex. Wing tanks or spaces and double bottom tanks used to meet the requirements of regulation 18 shall be located as uniformly as practicable along the cargo tank length. Additional segregated ballast capacity provided for reducing longitudinal hull girder bending stresses, trim, etc., may be located anywhere within the ship.
.5 Suction wells in cargo tanks Suction wells in cargo tanks may protrude into the double bottom below the boundary line defined by the distance h, provided that such wells are as small as practicable and the distance between the well bottom and the bottom shell plating is not less than 0.5 h.
.6 Ballast and cargo piping Ballast piping and other piping such as sounding and vent piping to ballast tanks shall not pass through cargo tanks. Cargo piping and similar piping shall not pass through ballast tanks. Exemptions to this requirement may be granted for short lengths of piping, provided that they are completely welded or of equivalent construction.
4 The following applies to double bottom tanks or spaces:
.1 Double bottom tanks or spaces as required in paragraph 3.2 of this regulation may be dispensed with, provided that the design of the oil tanker is such that the static pressure of the cargo and vapour exerted on the bottom shell plating constituting the only boundary between the cargo and the sea does not exceed the external hydrostatic water pressure, as expressed by the formula:
f × hc × ρc × g + 100 Δp ≤ dn × ρs × g, where:
hc = height of cargo in contact with the bottom shell plating, in metres; ρc = maximum cargo density, in kg/m³; dn = minimum operating draught under any expected loading condition, in metres; ρs = density of seawater, in kg/m³; Δp = maximum set pressure of the pressure/vacuum valve for the cargo tank, in pascals; f = safety factor = 1.1; g = standard acceleration of gravity (9.81 m/s²).
.2 Any horizontal division necessary to meet the above requirements shall be located at a height above the baseline of not less than B/6 or 6 m, whichever is the lesser, but not more than 0.6 D, where D is the moulded depth amidships.
.3 The location of wing tanks or spaces shall be as defined in paragraph 3.1 of this regulation except that, below a level 1.5 h above the baseline where h is as defined in paragraph 3.2 of this regulation, the boundary line of the cargo tank may be vertical down to the bottom plating, as shown in figure 2.
5 Other methods of design and construction of oil tankers may also be accepted as alternatives to the requirements of paragraph 3 of this regulation, provided that such methods ensure at least the same level of protection against oil pollution in the event of collision or stranding, and are approved in principle by the Marine Environment Protection Committee based on guidelines developed by the Organization for that purpose.
6 Every oil tanker of less than 5,000 tonnes deadweight shall comply with the requirements of paragraphs 3 and 4 of this regulation, or shall:
.1 be provided at least with double bottom tanks or spaces having a depth such that the distance h specified in paragraph 3.2 of this regulation complies with the following:
h = B/15 (m), in the turn of bilge area and at locations without a clearly defined turn of bilge, the boundary line of the cargo tank shall run parallel to the line of the flat of bottom amidships, as shown in figure 3; and .2 be provided with cargo tanks so arranged that the capacity of each cargo tank does not exceed 700 m³, unless wing tanks or spaces are arranged in accordance with paragraph 3.1 of this regulation, complying with the following:
w = 0.4 + (2.4 DW / 20000) (m).
7 Oil shall not be carried in any space extending forward of a collision bulkhead located in accordance with regulation II-1/12 of the International Convention for the Safety of Life at Sea, 1974, as amended. Oil tankers not required to have a collision bulkhead in accordance with that regulation shall not carry oil in any space extending forward of the transverse plane perpendicular to the centreline that is located at the position where such a collision bulkhead would have been situated in accordance with that regulation.
8 In approving the design and construction of an oil tanker to be built in accordance with this regulation, Administrations shall give due regard to the general safety aspects, including the need for maintenance and inspection of wing and double bottom tanks or spaces.
Regulation 20 Requirements for double hull and double bottom for oil tankers delivered before 6 July 1996 1 Unless expressly provided otherwise, this regulation shall:
.1 apply to oil tankers of 5,000 tonnes deadweight and above delivered before 6 July 1996, as defined in regulation 1.28.5 of this Annex; and .2 not apply to oil tankers complying with regulations 19 and 28 in respect of the provisions of paragraph 28.7, delivered before 6 July 1996, as defined in regulation 1.28.5 of this Annex; and .3 not apply to oil tankers covered by subparagraph .1 above which comply with paragraphs 3.1 and 3.2 or 4 or 5 of regulation 19 of this Annex, except that the minimum distances between the cargo tank boundaries and the ship side and bottom plating do not need to be fully met. In that case, the side protection distances shall not be less than those specified in the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk for the location of cargo tanks for type 2 ships, and the bottom protection distances at the centreline shall comply with regulation 18.15.2 of this Annex.
2 For the purpose of this regulation:
.1 "heavy diesel oil" means diesel oil other than those distillates of which more than 50% by volume distils at a temperature not exceeding 340°C when tested by the method acceptable to the Organization.
.2 "fuel oil" means heavy distillates or residues from crude oil or blends of such materials intended for use as a fuel for the production of heat or power of a quality equivalent to the specification acceptable to the Organization.
3 For the purpose of this regulation, oil tankers are divided into the following categories:
.1 "Category 1 oil tanker" means an oil tanker of 20,000 tonnes deadweight and above carrying crude oil, fuel oil, heavy diesel oil or lubricating oil as cargo, and of 30,000 tonnes deadweight and above carrying oil other than the above, which does not comply with the requirements for oil tankers delivered after 1 June 1982, as defined in regulation 1.28.4 of this Annex; .2 "Category 2 oil tanker" means an oil tanker of 20,000 tonnes deadweight and above carrying crude oil, fuel oil, heavy diesel oil or lubricating oil as cargo, and of 30,000 tonnes deadweight and above carrying oil other than the above, which complies with the requirements for oil tankers delivered after 1 June 1982, as defined in regulation 1.28.4 of this Annex; and .3 "Category 3 oil tanker" means an oil tanker of 5,000 tonnes deadweight and above but less than the tonnage specified in subparagraphs .1 or .2 of this paragraph.
4 An oil tanker to which this regulation applies shall comply with the requirements of paragraphs 2 to 5, 7 and 8 of regulation 19 and regulation 28 in respect of the provisions of paragraph 28.7 of this Annex not later than 5 April 2005 or the anniversary of the date of delivery of the ship on the date or in the year specified in the following table:
| Category of oil tanker | Date or year |
|---|---|
| Category 1 | 5 April 2005 for ships delivered on 5 April 1982 or earlier |
| 2005 for ships delivered after 5 April 1982 | |
| Category 2 and Category 3 | 5 April 2005 for ships delivered on 5 April 1977 or earlier |
| 2005 for ships delivered after 5 April 1977 but before 1 January 1978 | |
| 2006 for ships delivered in 1978 and 1979 | |
| 2007 for ships delivered in 1980 and 1981 | |
| 2008 for ships delivered in 1982 | |
| 2009 for ships delivered in 1983 | |
| 2010 for ships delivered in 1984 or later |
5 Notwithstanding the provisions of paragraph 4 of this regulation, in the case of a Category 2 or 3 oil tanker fitted with only double bottoms or double sides not used for the carriage of oil and extending the entire cargo tank length, or double hull spaces not used for the carriage of oil and extending the entire cargo tank length, but which does not fulfil the conditions for being exempted from the provisions of paragraph 1.3 of this regulation, the Administration may allow such a ship to continue operation beyond the date specified in paragraph 4 of this regulation, provided that:
.1 the ship was in service on 1 July 2001; .2 the Administration is satisfied, through verification of official records, that the ship complied with the conditions specified above; .3 the conditions of the ship specified above remain unchanged; and .4 such continued operation does not go beyond the date on which the ship reaches 25 years from its date of delivery.
6 Category 2 or 3 oil tankers that are or have reached 15 years or more from their date of delivery shall comply with the Condition Assessment Scheme adopted by the Marine Environment Protection Committee by resolution MEPC.94(46), as amended, provided that such amendments are adopted, brought into force and take effect in accordance with the provisions of article 16 of the present Convention relating to the amendment procedures applicable to an appendix to an Annex.
7 For Category 2 or 3 oil tankers, the Administration may allow continued operation beyond the date specified in paragraph 4 of this regulation, if satisfactory results of the Condition Assessment Scheme justify that, in the opinion of the Administration, the ship is fit to continue such operation, provided that the operation shall not continue beyond the anniversary of the date of delivery of the ship in 2015 or the date on which the ship reaches 25 years from its date of delivery, whichever is the earlier date.
8.1 The Administration of a Party to the present Convention which authorizes the application of paragraph 5 of this regulation, or allows, suspends, withdraws or declines the application of the provisions of paragraph 7 of this regulation to a ship entitled to fly its flag, shall immediately communicate to the Organization the particulars thereof for circulation to the Parties to the present Convention, for their information and for such action as they may consider necessary.
8.2 A Party to the present Convention shall be entitled to deny entry into the ports or offshore terminals under its jurisdiction to oil tankers operating in accordance with the provisions of:
.1 paragraph 5 of this regulation, beyond the anniversary of the date of delivery of the ship in 2015; or .2 paragraph 7 of this regulation.
In such cases, that Party shall communicate to the Organization, for circulation to the Parties to the present Convention, the particulars thereof for their information.
Regulation 21 Prevention of oil pollution from oil tankers carrying heavy grade oil as cargo 1 This regulation:
.1 shall apply to oil tankers of 600 tonnes deadweight and above, carrying heavy grade oil as cargo, regardless of the date of delivery; and .2 shall not apply to oil tankers governed by the provisions of subparagraph .1 above which comply with the requirements of paragraphs 3.1 and 3.2 or 4 or 5 of regulation 19 of this Annex, even if they do not fully comply with the requirements regarding minimum distances between the boundaries of the cargo tanks and the ship's side and bottom plating. In such a case, the side protection distances shall not be less than those stipulated in the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk for the location of cargo tanks on type 2 ships, and the bottom protection distances at the centerline shall comply with the provisions of regulation 18.15.2 of this Annex.
2 For the purposes of this regulation, heavy grade oil (hidrocarburos pesados) means any of the following:
.1 crude oils having a density higher than 900 kg/m3 at 15°C; .2 oils, other than crude oils, having a density higher than 900 kg/m3 at 15°C or a kinematic viscosity higher than 180 mm2/s at 50°C; or .3 asphalt, tar and their emulsions.
3 Oil tankers to which this regulation applies shall comply with the provisions of paragraphs 4 to 8 of this regulation, in addition to complying with the applicable provisions of regulation 20.
4 Subject to the provisions of paragraphs 5, 6 and 7 of this regulation, an oil tanker to which this regulation applies shall comply with the following:
1 if of 5,000 tonnes deadweight and above, it shall comply with the applicable requirements of regulation 19 of this Annex not later than 5 April 2005; or .2 if of 600 tonnes deadweight and above but less than 5,000 tonnes deadweight, it shall be fitted with double bottom tanks or spaces complying with the provisions of regulation 19.6.1 of this Annex, and with side tanks or spaces arranged in accordance with regulation 19.3.1 and shall comply with the requirement for distance w as specified in regulation 19.6.2, not later than the anniversary of the date of delivery of the ship in the year 2008.
5 In the case of an oil tanker of 5,000 tonnes deadweight and above, carrying heavy grade oil as cargo, fitted only with double bottoms or double sides not used for the carriage of oil and extending the entire length of the cargo tanks, or with double hull spaces not used for the carriage of oil and extending the entire length of the cargo tanks, but which does not meet the conditions for exemption from the provisions of paragraph 1.2 of this regulation, the Administration may allow such ship to continue operating after the date specified in paragraph 4 of this regulation, provided that:
.1 the ship was in service on 4 December 2003; .2 the Administration is satisfied, by verification of official records, that the ship complied with the conditions specified above; .3 the conditions of the ship specified above remain unchanged; and .4 such continued operation does not go beyond the date on which the ship reaches 25 years after the date of its delivery.
6.1 In the case of oil tankers of 5,000 tonnes deadweight and above, carrying crude oil having a density higher than 900 kg/m3 at 15°C but lower than 945 kg/m3, the Administration may allow continued operation after the date specified in paragraph 4.1 of this regulation, if satisfactory results of the Condition Assessment Scheme referred to in regulation 20.6 warrant that, in the opinion of the Administration, the ship is fit to continue such operation, having regard to the size, age, operational area and structural conditions of the ship, provided that the operation shall not go beyond the date on which the ship reaches 25 years after the date of its delivery.
6.2 The Administration may allow an oil tanker of 600 tonnes deadweight and above but less than 5,000 tonnes deadweight, carrying heavy grade oil as cargo, to continue operating after the date specified in paragraph 4.2 of this regulation if, in the opinion of the Administration, the ship is fit to continue such operation, having regard to the size, age, operational area and structural conditions of the ship, provided that the operation shall not go beyond the date on which the ship reaches 25 years after the date of its delivery.
7 The Administration of a Party to the present Convention may exempt from the provisions of this regulation an oil tanker of 600 tonnes deadweight and above carrying heavy grade oil as cargo, if the oil tanker:
.1 is solely engaged in voyages within an area under its jurisdiction, or operates as a floating storage unit of heavy grade oil located within an area under its jurisdiction; or .2 is solely engaged in voyages within an area under the jurisdiction of another Party, or operates as a floating storage unit of heavy grade oil located within an area under the jurisdiction of another Party, provided that the Party within whose jurisdiction the oil tanker will operate gives its consent to the operation of the oil tanker within an area under its jurisdiction.
8.1 Any Administration of a Party to the present Convention that allows, suspends, withdraws or declines the application of the provisions of paragraphs 5, 6 or 7 of this regulation to a ship entitled to fly its flag shall forthwith communicate to the Organization the particulars thereof, for circulation to the Parties to the present Convention, for their information and for such action as they may consider necessary.
8.2 Subject to the provisions of international law, a Party to the present Convention shall be entitled to deny entry of oil tankers operating in accordance with the provisions of paragraphs 5 or 6 of this regulation into the ports or offshore terminals under its jurisdiction, or to deny ship-to-ship transfer of heavy grade oil in areas under its jurisdiction except when this is necessary for the purpose of securing the safety of a ship or saving life at sea. In such cases, that Party shall communicate to the Organization the particulars thereof, for circulation to the Parties to the present convention, for their information.
Regulation 22 Pump-room bottom protection 1 This regulation applies to oil tankers of 5,000 tonnes deadweight and above constructed on or after 1 January 2007.
2 The pump-room shall be provided with a double bottom such that at any cross-section, the depth of each double bottom tank or space shall be such that the distance h between the bottom of the pump-room and the ship's baseline measured at right angles to the said baseline is not less than specified below:
The minimum value of h = 1 m.
3 In the case of pump-rooms whose bottom plating is located above the baseline by at least the minimum height required in paragraph 2 above (e.g., gondola stern designs), there will be no need for a double bottom construction in way of the pump-room.
4 Ballast pumps shall be provided with suitable arrangements to ensure efficient suction from double bottom tanks.
5 Notwithstanding the provisions of paragraphs 2 and 3 above, where the flooding of the pump-room would not render the ballast or cargo pumping system inoperative, a double bottom need not be fitted.
Regulation 23 Accidental oil outflow performance 1 This regulation shall apply to oil tankers delivered on or after 1 January 2010, as defined in regulation 1.28.8.
2 For the purpose of this regulation, the following definitions shall apply:
.1 Draft at Load Line (ds) is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to the summer freeboard to be assigned to the ship. Calculations pertaining to this regulation should be based on draft ds, disregarding any assigned draft that may exceed ds, such as the Tropical Load Line.
.2 Waterline (dB) is the vertical distance, in metres, from the moulded baseline at mid-length to the waterline corresponding to 30% of the depth Ds.
.3 Breadth (Bs) is the greatest moulded breadth of the ship, in metres, at or below the deepest load line ds.
.4 Breadth (B) is the greatest moulded breadth of the ship, in metres, at or below the waterline dB.
.5 Depth (Ds) is the moulded depth, in metres, measured at mid-length to the upper deck at side.
.6 Length (L) and Deadweight (DW) are as defined in paragraphs 19 and 23 of regulation 1, respectively.
3 To provide adequate protection against oil pollution in the event of collision or stranding, the following shall be complied with:
.1 for oil tankers of 5,000 tonnes deadweight and above, the mean oil outflow parameter shall be:
for combined carriers of 5,000 tonnes deadweight and 200,000 m3 capacity, the mean oil outflow parameter may be applied provided that calculations satisfactory to the Administration are submitted, demonstrating that, in addition to its increased structural strength, the combined carrier has an accidental oil outflow performance at least equivalent to a standard double hull tanker of the same size, with OM ≤ 0.015.
where:
OM = mean oil outflow parameter, in m3, at 98% tank filling C = total volume of oil cargo, in m3, at 98% tank filling.
.2 for oil tankers of less than 5,000 tonnes deadweight, the length of each cargo tank shall not exceed 10 m or one of the following values, whichever is the greater:
.2.1 where no longitudinal bulkhead is provided inside the cargo tanks:
.2.2 where a centreline longitudinal bulkhead is provided inside the cargo tanks:
.2.3 where two or more longitudinal bulkheads are provided inside the cargo tanks:
bi is the minimum distance from the ship's side to the outer longitudinal bulkhead of the tank in question, measured inboard perpendicularly from the ship's side, at the level corresponding to the assigned summer freeboard.
4 The following general assumptions shall apply when calculating the mean oil outflow parameter:
.1 The length of the cargo block extends between the forward and after extremities of all tanks arranged for the carriage of oil cargo, including slop tanks.
.2 Where this regulation refers to cargo tanks, it shall be understood to include all cargo tanks, slop tanks and fuel tanks located within the cargo block.
.3 The ship shall be assumed loaded to the load line draft ds, with zero trim and no heel.
.4 All cargo oil tanks shall be assumed loaded to 98% of their volumetric capacity. The nominal density of the oil cargo, (ρn), shall be calculated as follows:
.5 For these outflow calculations, the permeability of each space within the cargo block, including cargo tanks, ballast tanks and other non-oil spaces, shall be taken as 0.99, unless otherwise specified.
.6 Suction wells may be neglected in the determination of tank location, provided that such wells are as small as practicable and the distance between the well bottom and the bottom shell plating is not less than 0.5 h, where h is the height as defined in regulation 19.3.2.
5 The following assumptions shall be used when combining the oil outflow parameters:
.1 The mean oil outflow shall be calculated independently for side damage and for bottom damage, and then combined into the non-dimensional oil outflow parameter OM, as shown below:
where:
OMS = mean outflow for side damage, in m3; and OMB = mean outflow for bottom damage, in m3.
.2 For bottom damage, the mean outflow shall be calculated independently for 0 m tide and for a -2.5 m tide reduction, and then combined as follows:
OMB = 0.70MB(0) + 0.30MB(2.5), where:
OMB (0) = mean outflow for 0 m tide; and OMB (2.5) = mean outflow for -2.5 m tide reduction, in m3.
6 The mean outflow for side damage OMS shall be calculated as follows:
where:
i = represents each cargo tank under consideration; n = total number of cargo tanks; PS(i) = the probability of penetrating cargo tank i from side damage, calculated in accordance with paragraph 8.1 of this regulation; OS(i) = the outflow, in m3, from side damage to cargo tank i, which is assumed equal to the total volume of oil in cargo tank i at 98% filling, unless it is demonstrated, through application of the Guidelines referred to in regulation 19.5, that any significant volume of cargo will be retained; and C3 = 0.77 for ships with two longitudinal bulkheads inside the cargo tanks, provided these bulkheads are continuous over the cargo block and PS(i) is calculated in accordance with this regulation. C3 equals 1.0 for all other ships, or when PS(i) is calculated in accordance with paragraph 10 of this regulation.
7 The mean outflow for bottom damage shall be calculated, for each tidal condition, as follows:
where:
i = represents each cargo tank under consideration; n = total number of cargo tanks; PB(i) = the probability of penetrating cargo tank i from bottom damage, calculated in accordance with paragraph 9.1 of this regulation; OB(i) = the outflow from cargo tank i, in m3, calculated in accordance with paragraph 7.3 of this regulation; and CDB(i) = factor to account for oil capture as defined in paragraph 7.4 of this regulation.
where:
i, n, PB(i), and CDB(i) = as defined in subparagraph .1 above; OB(i) = the outflow from cargo tank i, in m3, after tidal change.
.3 The oil outflow OB(i) for each cargo oil tank shall be calculated based on hydrostatic pressure balance principles, in accordance with the following assumptions:
.3.1 The ship shall be assumed stranded, with zero trim and no heel, and the draft of the stranded ship prior to tidal change is equal to the load line draft ds.
.3.2 The cargo level after damage shall be calculated as follows:
where:
hc = height of oil cargo above ZI, in metres; tc = tidal change, in metres. Reductions in tide shall be expressed as negative values; ZI, = height, in metres, of the lowest point in the cargo tank above the baseline; ρs = density of seawater, to be taken as 1,025 kg/m3; p = if an inert gas system is fitted, the normal overpressure, in kPa, not to be taken as less than 5 kPa; if no inert gas system is fitted, an overpressure of zero may be assumed; g = acceleration of gravity, to be taken as 9.81 m/s2; and ρn = nominal density of cargo oil, calculated in accordance with paragraph 4.4 of this regulation.
.3.3 For cargo tanks adjacent to the bottom shell, unless proven otherwise, oil outflow OB(i) shall be taken not less than 1% of the total volume of oil loaded in cargo tank i, to account for initial exchange losses and dynamic effects due to currents and waves.
.4 In the case of bottom damage, a portion of the outflow from a cargo tank may be captured by non-oil compartments. This effect is approximated by applying the factor CDB(i) for each tank as follows:
CDB(i) = 0.6 for cargo tanks that are bounded from below by non-oil compartments; CDB(i) = 1.0 for cargo tanks adjacent to the bottom shell.
8 The probability P of breaching a compartment from side damage shall be calculated as follows:
.1 PS = PsL . Psv . PsT where:
PsL = 1 - Psf - PSa = probability the damage will extend to the longitudinal zone bounded by Xa and Xf; Psv = 1 - Psu - Psl = probability the damage will extend to the vertical zone bounded by Zl and Zu; and PST = 1 - Psy = probability the damage will extend transversely beyond the boundary defined by y.
.2 PSa, Psf, PSl, Psu and Psy shall be determined by linear interpolation from the table of probabilities for side damage provided in paragraph 8.3 of this regulation, where:
PSa = the probability the damage will lie entirely aft of location Xa/L; Psf = the probability the damage will lie entirely forward of location Xf/L; PSl = the probability the damage will lie entirely below the tank; Psu = the probability the damage will lie entirely above the tank; and Psy = the probability the damage will lie entirely outboard of the tank.
The compartment boundaries Xa, Xf, Zl, Zu and y shall be established as follows:
Xa = the longitudinal distance from the aft terminal of L to the aftmost point of the compartment under consideration, in metres; Xf = the longitudinal distance from the aft terminal of L to the foremost point of the compartment under consideration, in metres; Zl = the vertical distance from the moulded baseline to the lowest point of the compartment under consideration, in metres; Zu = the vertical distance from the moulded baseline to the highest point of the compartment under consideration, in metres. Zu shall not be taken greater than Ds; and Y = the minimum horizontal distance measured at right angles to the centreline between the compartment under consideration and the side shell, in metres.
3. Table of probabilities for side damage 9 The probability PB of breaching a compartment from bottom damage shall be calculated as follows:
.1 PB = PBL PBT PBv, where:
PBL = 1 - PBF - PBa = probability the damage will extend to the longitudinal zone bounded by Xa and Xf; PBT = 1 - Pbp - PBS = probability the damage will extend to the transverse zone bounded by Yp and YS; and PBV = 1 - PBZ = probability the damage will extend vertically above the boundary defined by z.
.2 PBa, PBf, PBp, PBS and PBZ shall be determined by linear interpolation from the table of probabilities for bottom damage provided in paragraph 9.3 of this regulation, where:
PBa = the probability the damage will lie entirely aft of location; PBf = the probability the damage will lie entirely forward of location; PBp = the probability the damage will lie entirely to port of the tank; PBS = the probability the damage will lie entirely to starboard of the tank; and PBZ = the probability the damage will lie entirely below the tank.
The compartment boundaries Xa, Xf, Yp, YS and z shall be established as follows:
Xa and Xf as defined in paragraph 8.2 of this regulation; YP = the transverse distance from the port-most point of the compartment located at or below the waterline dB to a vertical plane located BB/2 to starboard of the ship's centreline, in metres; Y5 = the transverse distance from the starboard-most point of the compartment located at or below the waterline ds to a vertical plane located BB/2 to starboard of the ship's centreline, in metres; and z = the minimum value of the vertical distance, measured along the compartment and at any location along it, from the lowest point of the bottom shell at that longitudinal location to the lowest point of the compartment at that same location, in metres.
,3 Table of probabilities for bottom damage 10 This regulation adopts a simplified probabilistic approach through a summation of the contribution of each cargo tank to the mean oil outflow.
For certain designs, such as those characterized by the occurrence of steps or recesses in bulkheads or decks, and for inclined bulkheads or pronounced hull curvature, more rigorous calculations may be appropriate. In such cases, one of the following calculation procedures may be applied:
.1 The probabilities referred to in paragraphs 8 and 9 above may be calculated with greater accuracy through the use of hypothetical sub-compartments; .2 The probabilities referred to in paragraphs 8 and 9 above may be calculated through direct application of the probability density functions contained in the Guidelines referred to in regulation 19.5; .3 The oil outflow performance may be evaluated in accordance with the method described in the Guidelines referred to in regulation 19.5.
11 The following provisions regarding piping arrangements shall apply:
.1 Pipelines that pass through cargo tanks and are located at a distance less than 0.30BS from the ship's side, or less than 0.30DS from the ship's bottom, shall be provided with valves or similar closing devices at the point where they open into any cargo tank. These valves shall be kept closed while the ship is at sea whenever the tanks contain cargo oil, except that they may be opened only as necessary for cargo transfer essential for cargo operations.
.2 The use of an emergency rapid cargo transfer system, or other system arranged to mitigate oil spillage in the event of an accident, may be accepted as a means for this purpose only if the Organization has approved the effectiveness and safety aspects of the system. Submission for approval shall be made in accordance with the Guidelines referred to in regulation 19.5.
Regulation 24 Assumed damage 1 For the purpose of calculating hypothetical oil outflow from an oil tanker in accordance with the provisions of regulations 25 and 26, the following three dimensions of the extent of damage by a parallelepiped on the side and bottom of the ship are assumed. In the case of bottom damage, two conditions are specified, which shall be applied separately to the affected part of the oil tanker.
2 Wherever the symbols mentioned in this regulation appear in the remainder of this chapter, they have the meaning defined in this regulation.
Regulation 25 Hypothetical outflow of oil 1 The hypothetical oil outflow in the event of side damage (Oc) or bottom damage (Os) shall be calculated using the following formulas, with respect to compartments breached by damage as defined in regulation 24 of this Annex at any conceivable point along the length of the ship:
.1 for side damage:
.2 for bottom damage:
where:
Wi = volume, in m3, of a wing tank assumed to be breached by the damage as specified in regulation 24 of this Annex; for a segregated ballast tank, Wi may be taken equal to zero.
Ci = volume, in m3, of a centre tank assumed to be breached by the damage as specified in regulation 24 of this Annex; for a segregated ballast tank, Ci may be taken equal to zero.
bi = width, in m, of the wing tank under consideration measured inboard from the ship's side at right angles to the centreline at the level corresponding to the assigned summer freeboard, hi = minimum depth, in m, of the double bottom under consideration; where no double bottom is fitted, hi shall be taken equal to zero.
Wherever the symbols mentioned in this paragraph appear in the remainder of this chapter, they have the meaning defined in this regulation.
2 If a void space or segregated ballast tank of length less than Ic as defined in regulation 24 of this Annex is located between wing oil tanks, Oc in formula (I) may be calculated based on the volume Wi being the actual volume of the smaller of these two tanks adjacent to such a space, multiplied by Si as defined below, and taking for all other wing tanks affected by the assumed damage the value of the actual full volume.
where Ii = length, in m, of the void space or segregated ballast tank under consideration.
3.1 For double bottom tanks, only those double bottom tanks that are empty or containing clean water shall be credited.
3.2 Where the double bottom does not extend over the full length and width of the tank concerned, the double bottom shall be considered non-existent and the volume of the tanks above the area of bottom damage shall be included in formula (II), even if the tank is not considered breached because of the presence of such partial double bottom.
3.3 Suction wells may be neglected in the determination of the value hi provided such wells are not excessive in area and extend below the tank for a minimum distance, and in no case more than half the height of the double bottom. If the depth of such a well exceeds half the height of the double bottom, hi shall be taken equal to the double bottom height minus the well height.
Piping serving such suction wells, if installed within the double bottom, shall be fitted with valves or other closing devices located at the point of connection to the tank served, to prevent oil outflow in the event of damage to the piping. Such piping shall be installed as high from the bottom shell as practicable.
These valves shall be kept closed while the ship is at sea whenever the tank contains cargo oil, except that they may be opened only as necessary for cargo transfer for the purpose of trimming the ship.
4 In the case of bottom damage simultaneously affecting four centre tanks, the value of Os may be calculated by means of the formula:
5 An Administration may accept, as a means to reduce oil outflow in the event of bottom damage, a cargo transfer system featuring an emergency high-capacity suction in each cargo tank capable of transferring oil from one or more breached tanks to segregated ballast tanks or to other available cargo tanks, if it can be ensured that such tanks will have sufficient ullage. Such a system shall only be acceptable if it is capable of transferring, within 2 hours, oil equal to one half of the largest breached tank involved, with equivalent receiving capacity available in the segregated ballast or cargo tanks. The credit for such a system shall be limited to allowing calculation of OS according to formula (Ill). Piping for such suctions shall be installed at an elevation at least equal to the vertical extent of the bottom damage Vs. The Administration shall supply the Organization with information on the systems and arrangements it has accepted, for circulation to other Parties to the Convention.
6 This regulation shall not apply to oil tankers delivered on or after 1 January 2010, as defined in regulation 1.28.8.
Regulation 26 Arrangement of cargo tanks and limitation of their size 1 Except as provided in paragraph 7 below:
.1 every oil tanker of 150 gross tonnage and above delivered after 31 December 1979, as defined in regulation 1.28.2; and .2 every oil tanker of 150 gross tonnage and above delivered on or before 31 December 1979, as defined in regulation 1.28.1, which falls into one of the following categories:
.2.1 oil tankers whose delivery is after 1 January 1977; or .2.2 oil tankers which meet both of the following conditions:
.2.2.1 delivery is not later than 1 January 1977; and .2.2.2 the building contract is placed after 1 January 1974, or in cases where no building contract has been placed, the keel is laid or the ship is at a similar stage of construction after 30 June 1974, shall comply with this regulation.
2 The capacity and arrangement of cargo tanks of oil tankers shall be such that the hypothetical outflow Oc, or Os calculated in accordance with the provisions of regulation 25 of this Annex, anywhere in the length of the ship, does not exceed 30,000 m3 or , whichever is the greater, but limited to a maximum of 40,000 m3.
3 The volume of any wing cargo oil tank of an oil tanker shall not exceed 75 % of the limits of the hypothetical oil outflow mentioned in paragraph 2 of this regulation. The volume of any center cargo oil tank shall not exceed 50,000 m3. However, in oil tankers provided with segregated ballast tanks, as defined in regulation 18 of this Annex, the permitted volume of a wing cargo oil tank situated between two segregated ballast tanks, each exceeding lc in length, may be increased to the maximum limit of hypothetical oil outflow, provided that the width of the wing tank exceeds tc.
4 The length of each cargo tank shall not exceed 10 m or one of the following values, whichever is greater:
.1 where no longitudinal bulkheads are provided in the cargo tanks:
but not exceeding 0.2 L .2 where a centerline longitudinal bulkhead is provided in the cargo tanks:
.3 where two or more longitudinal bulkheads are provided in the cargo tanks:
.3.1 for wing cargo tanks: 0.2L; .3.2 for center cargo tanks:
.3.2.1 if equal to or greater than 1/5: 0.2L; .3.2.2 if less than 1/5:
.3.2.2.1 where no centerline longitudinal bulkhead is provided:
.3.2.2.2 where a centerline longitudinal bulkhead is provided:
bi is the minimum distance from the ship's side to the outer longitudinal bulkhead of the tank in question, measured inboard perpendicularly to the centerline at the level corresponding to the assigned summer freeboard.
5 In order not to exceed the volume limits established in paragraphs 2, 3 and 4 of this regulation, and irrespective of the type of cargo transfer system accepted for installation by the Administration, where such a system interconnects two or more cargo tanks, means shall be provided for isolating such tanks by valves or other similar closing devices. Such valves or devices shall be kept closed when the oil tanker is at sea.
6 Piping systems passing through cargo tanks situated less than tc from the ship's side and less than vc from the ship's bottom shall be fitted with valves or similar closing devices at the point where they open into any cargo tank. These valves shall be kept closed at sea at all times while the tanks contain cargo oil, except that they may be opened only as necessary for cargo transfer to restore trim.
7 This regulation shall not apply to oil tankers delivered on 1 January 2010 or after, as defined in regulation 1.28.8.
Regulation 27 Intact stability 1 Every oil tanker of 5,000 tonnes deadweight and above, delivered on 1 February 2002 or after, as defined in regulation 1.28.7, shall comply with the intact stability criteria specified in paragraphs 1.1 and 1.2 of this regulation, as appropriate, for any operating draught under the worst possible conditions of cargo and ballast, consistent with good practice, including the intermediate stages of liquid transfer operations. The ballast tanks shall be assumed to be slack.
.1 In port, the initial metacentric height GMo, corrected for free surface measured at an angle of heel of 0°, shall not be less than 0.15 m.
.2 At sea, the following criteria shall apply:
.2.1 the area under the righting lever curve (GZ curve) shall not be less than 0.055 m rad up to an angle of heel = 30° nor less than 0.09 m rad up to an angle of heel θ = 40°, or up to the angle of downflooding θf if this angle is less than 40°. Additionally, the area under the righting lever curve (GZ curve) between the angles of heel of 30° and 40°, or between 30° and θf if this angle is less than 40°, shall not be less than 0.03 m rad; .2.2 the righting lever GZ shall be at least 0.20 m at an angle of heel equal to or greater than 30°; .2.3 the maximum righting lever shall occur at an angle of heel preferably exceeding 30° but not less than 25°; and .2.4 the initial metacentric height GMo, corrected for free surface measured at an angle of 0° of heel, shall not be less than 0.15 m.
2 The requirements of paragraph 1 of this regulation shall be met through design measures.
For combination carriers, simple supplementary operational procedures may be permitted.
3 The simple supplementary operational procedures referred to in paragraph 2 of this regulation for liquid transfer operations shall mean written instructions provided to the master which:
.1 are approved by the Administration; .2 indicate those cargo and ballast tanks that may be slack under any specific condition of liquid transfer and for any possible range of cargo densities, while still meeting the stability criteria. The slack tanks may vary during the liquid transfer operations and form any combination, provided the criteria are satisfied; .3 will be readily understandable to the officer in charge of liquid transfer operations; .4 provide for planned sequences of cargo/ballast transfer operations; .5 allow comparisons of achieved and required stability using stability criteria presented in graphical or tabular form; .6 will require no extensive mathematical calculations by the officer in charge of the operations; .7 provide for corrective actions to be taken by the officer in charge of the operations in the event of departure from the recommended values and in emergency situations; and .8 are prominently displayed in the approved trim and stability booklet and at the cargo/ballast transfer control station and in any computer software by which stability calculations are performed.
Regulation 28 Subdivision and damage stability 1 Every oil tanker delivered after 31 December 1979, as defined in regulation 1.28.2, of 150 gross tonnage and above, shall comply with the subdivision and damage stability criteria specified in paragraph 3 of this regulation, after the assumed side or bottom damage specified in paragraph 2 of this regulation, for any operating draught reflecting actual partial or full load conditions consistent with trim and strength of the ship and with the relative density of the cargo. Such damage shall be applied to all conceivable locations along the length of the ship as follows:
.1 in oil tankers of more than 225 m in length: anywhere in the ship’s length; .2 in oil tankers of more than 150 m, but not exceeding 225 m, in length: anywhere in the ship’s length except involving either the after or forward bulkhead bounding the machinery space located aft. The machinery space shall be treated as a single floodable compartment; and .3 in oil tankers not exceeding 150 m in length: anywhere in the ship’s length between adjacent transverse bulkheads with the exception of the machinery space. For oil tankers of 100 m or less in length where all the requirements of paragraph 3 of this regulation cannot be met without materially impairing the operational capabilities of the ship, Administrations may allow a less rigorous application of these requirements.
The ballast condition shall not be considered where the ship is not carrying oil in the cargo tanks, excluding any oil residues.
2 The following provisions regarding the extent and the character of the assumed damage shall apply:
.3 If any damage of a lesser extent than the maximum specified in subparagraphs 2.1 and 2.2 of this paragraph would result in a more severe condition, such damage should be considered.
.4 Where the damage involves transverse bulkheads as specified in subparagraphs 1.1 and 1.2 of this regulation, transverse watertight bulkheads shall be spaced at least at a distance equal to the longitudinal extent of assumed damage specified in subparagraph 2.1 of this paragraph in order to be considered effective. Where transverse bulkheads are spaced at a lesser distance, one or more of these bulkheads within such extent of damage shall be assumed as non-existent for the purpose of determining flooded compartments.
.5 Where the damage is between adjacent transverse watertight bulkheads as specified in subparagraph 1.3 of this regulation, no main transverse bulkhead nor a transverse bulkhead bounding side tanks or double bottom tanks shall be assumed damaged, unless:
.5.1 the spacing of the adjacent bulkheads is less than the longitudinal extent of assumed damage specified in subparagraph 2.1 of this paragraph; or .5.2 there is a step or a recess in a transverse bulkhead of more than 3.05 m in length, located within the transverse extent of assumed damage.
The step formed by the after peak bulkhead and the after peak tank top shall not be regarded as a step for the purpose of this regulation.
.6 If pipes, ducts or tunnels are situated within the assumed extent of damage, arrangements shall be made so that progressive flooding cannot thereby extend to compartments other than those assumed to be floodable for each case of damage.
3 Oil tankers shall be regarded as complying with the damage stability criteria if the following requirements are met:
.1 The final waterline, taking into account sinkage, heel and trim, shall be below the lower edge of any opening through which progressive flooding may take place. Such openings shall include air pipes and those which are closed by means of weathertight doors or hatch covers, and may exclude those openings closed by means of watertight manhole covers and flush scuttles, small watertight cargo tank hatch covers which maintain the high integrity of the deck, remotely operated watertight sliding doors, hinged watertight access doors with closed/open indication locally and on the navigation bridge that are of the quick-acting or single-action type and that are normally closed at sea, hinged watertight doors that are permanently closed at sea and sidescuttles of the non-opening type.
.2 In the final stage of flooding, the angle of heel due to unsymmetrical flooding shall not exceed 25°, provided that this angle may be increased up to 30° if no deck edge immersion occurs.
.3 The stability in the final stage of flooding shall be investigated and may be regarded as sufficient if the righting lever curve has a minimum range of 20° beyond the position of equilibrium in association with a maximum residual righting lever of at least 0.1 m within the 20° range; the area under the curve within this range shall not be less than 0.0175 m rad. Unprotected openings shall not be immersed within this range unless the space concerned is assumed to be flooded. Within this range, the immersion of the openings listed in subparagraph 3.1 of this paragraph and of other openings capable of being closed weathertight may be permitted.
.4 The Administration shall be satisfied that the stability is sufficient during intermediate stages of flooding.
.5 Equalization arrangements requiring mechanical aids such as valves or cross-levelling pipes, if fitted, shall not be considered for the purpose of reducing an angle of heel or attaining the minimum range of residual stability to meet the requirements of subparagraphs 3.1, 3.2 and 3.3 of this paragraph and sufficient residual stability shall be maintained during all stages where equalization is used. Spaces which are linked by ducts of large cross-sectional area may be considered to be common.
4 The requirements of paragraph 1 of this regulation shall be confirmed by calculations which take into consideration the design characteristics of the ship, the arrangements, configuration and contents of the damaged compartments; and the distribution, relative densities and the free surface effect of liquids. The calculations shall be based on the following:
.1 Account shall be taken of any empty or partially filled tank, the relative density of cargoes carried, as well as any outflow of liquids from damaged compartments.
.2 The permeabilities assumed for spaces flooded as a result of damage shall be as follows:
.3 The buoyancy of any superstructure directly above the side damage shall be disregarded. However, the non-flooded parts of superstructures beyond the extent of damage may be taken into consideration provided that they are separated from the damaged space by watertight bulkheads and the requirements of subparagraph 3.1 of this regulation in respect of these intact spaces are complied with. Hinged watertight doors may be acceptable in watertight bulkheads in the superstructure.
.4 The free surface effect shall be calculated at an angle of heel of 5° for each individual compartment. The Administration may require or allow free surface corrections to be calculated at an angle of heel greater than 5° for partially filled tanks.
.5 In calculating the free surface effect of consumable liquids, it shall be assumed that, for each type of liquid, at least one transverse pair or a single centreline tank has a free surface, and the tank or combination of tanks to be taken into account shall be those where the free surface effect is the greatest.
5 The master of every oil tanker to which this regulation applies and the person in charge of a non-self-propelled oil tanker to which this regulation applies shall be supplied, in an approved form, with the following:
.1 information relative to loading and distribution of cargo necessary to ensure compliance with the provisions of this regulation; and .2 data on the capability of the ship to comply with damage stability criteria determined by this regulation, including the effect of any relaxations that may have been allowed under subparagraph 1.3 of this regulation.
6 All oil tankers shall be fitted with a stability instrument, capable of verifying compliance with intact and damage stability requirements, approved by the Administration having regard to the performance standards recommended by the Organization:
.1 oil tankers constructed before 1 January 2016 shall comply with this regulation at the first scheduled renewal survey of the ship on or after 1 January 2016, but not later than 1 January 2021; .2 notwithstanding the requirements of subparagraph .1, a stability instrument fitted on an oil tanker constructed before 1 January 2016 need not be replaced provided it is capable of verifying compliance with intact and damage stability, to the satisfaction of the Administration; and .3 for the purposes of control under regulation 11, the Administration shall issue a document of approval for the stability instrument.
7 In the case of oil tankers of 20,000 tonnes deadweight and above, delivered on 6 July 1996 or after, as defined in regulation 1.28.6, the damage assumptions prescribed in paragraph 2.2 of this regulation shall be supplemented by the following assumed bottom raking damage:
.1 longitudinal extent:
.1.1 for ships of 75,000 tonnes deadweight and above: 0.6L measured from the forward perpendicular; .1.2 for ships of less than 75,000 tonnes deadweight: 0.4L measured from the forward perpendicular; .2 transverse extent: anywhere in the bottom; .3 vertical extent: breach of the outer shell.
Regulation 29 Slop tanks 1 Subject to the provisions of paragraph 4 of regulation 3 of this Annex, oil tankers of 150 gross tonnage and above shall be provided with slop tank arrangements in accordance with the requirements of paragraphs 2.1 to 2.3 of this regulation. In oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, any cargo tank may be designated as a slop tank.
2.1 Adequate means shall be provided for cleaning the cargo tanks and transferring the dirty ballast residue and tank washings from the cargo tanks into a slop tank approved by the Administration.
2.2 In this system arrangements shall be provided to transfer the oily waste into a slop tank or combination of slop tanks in such a way that any effluent discharged into the sea will be such as to comply with the provisions of regulation 34 of this Annex.
2.3 The arrangements of the slop tank or combination of slop tanks shall have a capacity necessary to retain the slops generated by tank washings, oil residues and dirty ballast residues. The total capacity of the slop tank or tanks shall not be less than 3 % of the oil-carrying capacity of the ship, except that the Administration may accept:
.1 2 % for such oil tankers where the tank washing arrangements are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system; .2 2 % where segregated ballast tanks or dedicated clean ballast tanks are provided in accordance with regulation 18 of this Annex, or where a cargo tank cleaning system using crude oil washing is fitted in accordance with regulation 33 of this Annex. This capacity may be further reduced to 1.5 % for such oil tankers where the tank washing arrangements are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system; and .3 1 % for combination carriers where oil cargo is only carried in tanks with smooth walls. This capacity may be further reduced to 0.8 % where the tank washing arrangements are such that once the slop tank or tanks are charged with washing water, this water is sufficient for tank washing and, where applicable, for providing the driving fluid for eductors, without the introduction of additional water into the system.
2.4 Slop tanks shall be so designed particularly in respect of the position of inlets, outlets, baffles or weirs where fitted, so as to avoid excessive turbulence and entrainment of oil or emulsion with the water.
3 Oil tankers of 70,000 tonnes deadweight and above delivered after 31 December 1979, as defined in regulation 1.28.2, shall be provided with at least two slop tanks.
Regulation 30 Pumping, piping and discharge arrangements 1 In every oil tanker, a discharge manifold for connection to reception facilities for the discharge of dirty ballast water or oil-contaminated water shall be located on the open deck on both sides of the ship.
2 In every oil tanker of 150 gross tonnage and above, the pipelines for the discharge to the sea of ballast water or oil-contaminated water from cargo tank areas which may be permitted under regulation 34 of this Annex shall be led to the open deck or to the ship's side above the waterline in the deepest ballast condition. Different piping arrangements to permit operation in the manner permitted in subparagraphs 6.1 to 6.5 of this regulation may be accepted.
3 In oil tankers of 150 gross tonnage and above delivered after 31 December 1979, as defined in regulation 1.28.2, means shall be provided for stopping the discharge into the sea of ballast water or oil-contaminated water from cargo tank areas, other than those discharges below the waterline permitted under paragraph 6 of this regulation, from a position on the upper deck or above located so that the manifold referred to in paragraph 1 of this regulation and the discharge to the sea from the pipelines referred to in paragraph 2 of this regulation may be visually observed. Means for stopping the discharge need not be provided at the observation position if a positive and reliable communication system, such as telephone or radio, is provided between the observation position and the discharge control position.
4 Every oil tanker delivered after 1 June 1982, as defined in regulation 1.28.4, required to be provided with segregated ballast tanks or fitted with a crude oil washing system shall comply with the following requirements:
.1 it shall be equipped with oil piping so designed and installed that oil retention in the lines is minimized; and .2 means shall be provided to drain all cargo pumps and all oil lines at the completion of cargo discharge, where necessary by connection to a stripping device. The line and pump draining shall be capable of being discharged both ashore and to a cargo tank or a slop tank. For discharge ashore a special small-diameter line shall be provided and connected outboard of the ship's manifold valves.
5 Every crude oil tanker delivered on or before 1 June 1982, as defined in regulation 1.28.3, required to be provided with segregated ballast tanks or to be fitted with a crude oil washing system shall comply with the provisions of paragraph 4.2 of this regulation.
6 On every oil tanker the discharge of ballast water or oil-contaminated water from cargo tank areas shall take place above the waterline, subject to the following exceptions:
.1 Segregated clean ballast and segregated ballast may be discharged below the waterline:
.1.1 in ports or at offshore terminals; or .1.2 at sea by gravity; or .1.3 at sea by pumping if the ballast water exchange is performed under the provisions of regulation D-1.1 of the International Convention for the Control and Management of Ships' Ballast Water and Sediments, provided that the surface of the ballast water has been examined, either visually or by other means, immediately before the discharge to ensure that no oil contamination has taken place; .2 Oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, which, without modification, are not capable of discharging segregated ballast above the waterline may discharge segregated ballast below the waterline at sea, provided that the surface of the ballast water has been examined immediately before the discharge to ensure that no oil contamination has taken place; .3 Oil tankers delivered on or before 1 June 1982, as defined in regulation 1.28.3, operating with dedicated clean ballast tanks, which without modification are not capable of discharging ballast water from dedicated clean ballast tanks above the waterline, may discharge this ballast below the waterline provided the discharge of the ballast water is carried out in compliance with regulation 18.8.3 of this Annex; .4 On every oil tanker at sea, dirty ballast water or oil-contaminated water from tanks in the cargo area, other than slop tanks, may be discharged by gravity below the waterline, provided that sufficient time has elapsed to allow oil/water separation to have taken place and the ballast water has been examined immediately before the discharge with an oil/water interface detector referred to in regulation 32 of this Annex, in order to ensure that the height of the interface is such that the discharge does not involve any increased risk of harm to the marine environment; .5 On oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, at sea, dirty ballast water or oil-contaminated water from cargo tank areas may be discharged below the waterline, subsequent to or in lieu of the discharge by the method referred to in subparagraph 6.4 of this paragraph, provided that:
.5.1 a part of the flow of such water is led through permanent piping to a readily accessible location on the upper deck or above where it may be visually observed during the discharge operation; and .5.2 such part flow arrangements shall comply with the requirements established by the Administration, which shall include at least all the provisions of the Specifications for the design, installation and operation of a part flow system for control of overboard discharges, adopted by the Organization.
7 Every oil tanker of 150 gross tonnage and above delivered on 1 January 2010 or after, as defined in regulation 1.28.8, that has a sea chest permanently connected to the cargo piping system, shall be equipped with both a sea chest valve and an inboard isolation valve.
In addition to these valves, the sea chest shall be capable of isolation from the cargo piping system whilst the tanker is loading, unloading or carrying cargo, by use of a positive means that is to the satisfaction of the Administration. Such a positive means is a facility that is installed in the piping system to prevent, under all circumstances, the section of pipeline between the sea chest valve and the inboard valve being filled with cargo.
PART B: EQUIPMENT Regulation 31 Oil discharge monitoring and control system 1 Subject to the provisions of paragraphs 4 and 5 of regulation 3 of this Annex, oil tankers of 150 gross tonnage and above shall be equipped with an oil discharge monitoring and control system approved by the Administration.
2 In considering the design of the oil content meter to be incorporated into the system, the Administration shall have regard to the specification recommended by the Organization. The system shall be fitted with a recording device to provide a continuous record of the discharge in litres per nautical mile and total quantity discharged, or the oil content and rate of discharge. This record shall be identifiable as to time and date and shall be kept for at least three years. The oil discharge monitoring and control system shall come into operation when there is any discharge of effluent into the sea and shall be such as will ensure that any discharge of oily mixtures is automatically stopped when the instantaneous rate of discharge of oil exceeds that permitted under regulation 34 of this Annex. Any failure of this monitoring and control system shall stop the discharge. In the event of failure of the oil discharge monitoring and control system, a manually operated alternative method shall be used, but the defective unit shall be made operable as soon as possible. Subject to allowance by the port State authority, a tanker with a defective oil discharge monitoring and control system may undertake one ballast voyage before proceeding to a repair port.
3 The hydrocarbon discharge monitoring and control system shall be designed and installed in accordance with the guidelines and specifications for the hydrocarbon discharge monitoring and control system for oil tankers developed by the Organization. Administrations may accept the particular systems described in those guidelines and specifications.
4 The instructions relating to the operation of the system shall conform to those specified in an operations manual approved by the Administration. They shall apply to both manual and automatic operations and shall be intended to ensure that no discharge of hydrocarbons is made at any time except in accordance with the conditions of regulation 34 of this Annex.
Regulation 32 Hydrocarbon/water interface detectors Subject to the provisions of paragraphs 4 and 5 of regulation 3 of this Annex, effective hydrocarbon/water interface detectors, approved by the Administration, shall be installed in oil tankers of 150 gross tonnage and above, to rapidly and accurately determine the position of such interface in slop tanks; the use of these detectors shall also be provided for in other tanks where hydrocarbon and water separation is carried out and from which it is planned to discharge effluent directly into the sea.
Regulation 33 Requirements relating to crude oil washing 1 Every crude oil tanker of 20,000 tons deadweight and above, delivered after 1 June 1982, as defined in regulation 1.28.4, shall be fitted with a crude oil washing system for cargo tanks. The Administration shall ensure that such system fully complies with the requirements of this regulation within one year from the time the oil tanker was first engaged in the transport of crude oil, or at the end of the third voyage carrying crude oil suitable for crude oil washing, whichever occurs later.
2 The crude oil washing installations and associated equipment and arrangements shall comply with the requirements established by the Administration. Such requirements shall contain at least all the provisions of the Specifications for the Design, Operation and Control of Crude Oil Washing Systems, adopted by the Organization. Where a ship is not required, in accordance with the provisions of paragraph 1 of this regulation, to be fitted with crude oil washing equipment, but is so fitted, such equipment shall comply with the safety aspects of the aforementioned Specifications.
3 Every crude oil washing system required to be fitted in accordance with regulation 18.7 of this Annex shall comply with the requirements of this regulation.
PART C: CONTROL OF OPERATIONAL DISCHARGES OF HYDROCARBONS Regulation 34 Control of hydrocarbon discharges A Discharges outside special areas except Arctic waters 1 Subject to the provisions of regulation 4 of this Annex and paragraph 2 of this regulation, any discharge into the sea of hydrocarbons or oily mixtures from the cargo areas of an oil tanker shall be prohibited, except when all the following conditions are satisfied:
.1 the oil tanker is not within a special area; .2 the oil tanker is more than 50 nautical miles from the nearest land; .3 the oil tanker is proceeding en route; .4 the instantaneous rate of discharge of hydrocarbons does not exceed 30 litres per nautical mile; .5 the total quantity of hydrocarbons discharged into the sea does not exceed, for oil tankers delivered on or before 31 December 1979, as defined in regulation 1.28.1, of the total cargo of which the residue formed a part and, for oil tankers delivered after 31 December 1979, as defined in regulation 1.28.2, of the total cargo of which the residue formed a part; and .6 the oil tanker has in operation a hydrocarbon discharge monitoring and control system and a slop tank arrangement, as required by regulations 29 and 31 of this Annex.
2 The provisions of paragraph 1 of this regulation shall not apply to the discharge of clean or segregated ballast.
B Discharges in special areas 3 Subject to the provisions of paragraph 4 of this regulation, any discharge into the sea of hydrocarbons or oily mixtures from the cargo area of an oil tanker shall be prohibited while the ship is in a special area.
4 The provisions of paragraph 3 of this regulation shall not apply to the discharge of clean or segregated ballast.
5 Nothing in this regulation shall prohibit a ship on a voyage only part of which is in a special area from making discharges outside that special area in accordance with the provisions of paragraph 1 of this regulation.
C Requirements for oil tankers of less than 150 gross tonnage 6 The requirements of regulations 29, 31 and 32 of this Annex shall not apply to oil tankers of less than 150 gross tonnage, for which the control of hydrocarbon discharges under this regulation shall be effected by the retention of hydrocarbons on board and subsequent discharge to reception facilities of all contaminated wash water.
The total quantity of hydrocarbons and water used for washing and returned to a storage tank shall be discharged to reception facilities unless adequate arrangements are made to ensure that any effluent discharged into the sea is effectively monitored and controlled to ensure full compliance with the provisions of this regulation.
D General requirements 7 Whenever visible traces of hydrocarbons are observed on or below the surface of the water in the vicinity of a ship or its wake, the Governments of Parties to the present Convention shall promptly investigate, to the extent they are reasonably able, the facts bearing on the issue of whether there has been a violation of the provisions of this regulation. The investigation shall include, in particular, the wind and sea conditions, the track and speed of the ship, other possible sources of the visible traces in the vicinity, and any relevant hydrocarbon discharge records.
8 Discharges made into the sea shall not contain chemicals or any other substances in quantities or concentrations which are hazardous to the marine environment, nor shall they contain any chemicals or other substances added for the purpose of circumventing the conditions of discharge specified in this regulation.
9 The hydrocarbon residues which cannot be discharged into the sea in compliance with paragraphs 1 and 3 of this regulation shall be retained on board for subsequent discharge to reception facilities.
Regulation 35 Crude oil washing operations 1 Every oil tanker operating crude oil washing systems shall be provided with a Crude Oil Washing Operations and Equipment Manual detailing the system and equipment and specifying operational procedures. This Manual shall be deemed satisfactory by the Administration and shall contain all the information set out in the specifications referred to in paragraph 2 of regulation 31 of this Annex. If a change affecting the crude oil washing system is made, the manual shall be updated accordingly.
2 With respect to the ballasting of cargo tanks, before each ballast voyage, a sufficient number of cargo tanks shall be crude oil washed so that, taking into account the oil tanker's trading pattern and expected weather conditions, ballast water is put only into cargo tanks which have been crude oil washed.
3 Unless the crude oil it carries is not suitable for crude oil washing, the oil tanker shall operate the crude oil washing system in accordance with the Crude Oil Washing Operations and Equipment Manual.
Regulation 36 Oil Record Book, Part II - Cargo/Ballast Operations 1 Every oil tanker of 150 gross tonnage and above shall be provided with an Oil Record Book, Part II (Cargo/Ballast Operations). The Oil Record Book, Part II, whether or not it forms part of the official navigation logbook, or whether it is an electronic record book which the Administration shall approve taking into account the guidelines developed by the Organization, shall be in the form specified in appendix III of this Annex.
2 Entries shall be made in the Oil Record Book, Part II, on a tank-by-tank basis whenever appropriate, whenever any of the following cargo/ballast operations are carried out on board:
.1 loading of hydrocarbon cargo; .2 internal transfer of hydrocarbon cargo during voyage; .3 unloading of hydrocarbon cargo; .4 ballasting of cargo tanks and dedicated clean ballast tanks; .5 cleaning of cargo tanks, including crude oil washing; .6 discharge of ballast except from segregated ballast tanks; .7 discharge of water from slop tanks; .8 closing, as appropriate, of all valves or similar devices after slop tank discharge operations; .9 closing of valves necessary for isolating dedicated clean ballast tanks from cargo and stripping lines after slop tank discharge operations; and .10 disposal of residues.
3 For oil tankers indicated in regulation 34.6 of this Annex, the total quantity of hydrocarbons and water used for washing and transferred to a storage tank shall be recorded in the Oil Record Book, Part II.
4 In the event of any discharge of hydrocarbons or oily mixtures as referred to in regulation 4 of this Annex or any accidental or other exceptional discharge of hydrocarbons not excepted by that regulation, a statement shall be made in the Oil Record Book, Part II, explaining the circumstances of the discharge and the reasons therefor.
5 Each of the operations described in paragraph 2 of this regulation shall be fully recorded without delay in the Oil Record Book, Part II, so that all entries appropriate to that operation are made. Each entry shall be signed by the officer or officers in charge of the operation and each completed page or group of electronic entries shall be countersigned by the master of the ship. The entries in the Oil Record Book, Part II, shall be at least in Spanish, French or English. Where entries in an official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of controversy or discrepancy.
6 In the event of any failure of the hydrocarbon discharge monitoring and control system, an entry shall be made in the Oil Record Book, Part II.
7 The Oil Record Book shall be kept in a suitable place so as to be readily available for inspection at any reasonable time and, except in the case of unmanned ships under tow, shall be kept on board. It shall be preserved for a period of three years after the last entry has been made.
8 The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book, Part II, on board any ship to which this Annex applies while the ship is in one of its ports or offshore terminals and may make a copy of any entry in that Book and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made which has been certified by the master of the ship as a true copy of an entry in the ship's Oil Record Book, Part II, shall be admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of the Oil Record Book, Part II, and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
9 The Administration shall develop an appropriate Oil Record Book for oil tankers of less than 150 gross tonnage operating in accordance with regulation 34.6 of this Annex.
Regulation 37 Shipboard oil pollution emergency plan 1 Every oil tanker of 150 gross tonnage and above and every ship other than an oil tanker of 400 gross tonnage and above shall carry on board a shipboard oil pollution emergency plan approved by the Administration.
2 The plan shall be prepared in accordance with guidelines developed by the Organization and shall be written in the working language of the master and officers. The plan shall consist at least of:
.1 the procedure to be followed by the master or other persons in charge of the ship to report a hydrocarbon pollution incident, in accordance with article 8 and Protocol I of the present Convention, based on the guidelines developed by the Organization; .2 the list of authorities or persons to be contacted in the event of an incident involving hydrocarbon pollution; .3 a detailed description of the action to be taken immediately by persons on board to reduce or control the discharge of hydrocarbons resulting from the incident; and .4 the procedures and point of contact on board the ship for coordinating pollution response actions with national and local authorities.
3 In the case of ships to which regulation 17 of Annex II of the present Convention also applies, the plan may be combined with the shipboard marine pollution emergency plan for noxious liquid substances required under regulation 17 of Annex II of the present Convention. In such case, the plan shall be called "Shipboard marine pollution emergency plan".
4 Every oil tanker of 5,000 tons deadweight or more shall have prompt access to computerised, shore-based damage stability and residual structural strength calculation programs.
Regulation 38 Reception facilities A Reception facilities outside special areas 1 The Governments of Parties to the present Convention undertake to ensure the provision at hydrocarbon loading terminals, repair ports, and other ports in which ships have to discharge hydrocarbon residues, of facilities for the reception of such residues and oily mixtures as remain on board oil tankers and other ships, adequate to meet the needs of the ships using them without causing undue delay to ships.
2 Reception facilities required under paragraph 1 of this regulation shall be provided in:
.1 all ports and terminals where crude oil is loaded onto oil tankers where such oil tankers have immediately prior to arrival completed a ballast voyage of not more than 72 hours or 1,200 nautical miles; .2 all ports and terminals where hydrocarbons other than crude oil in bulk are loaded at an average quantity exceeding 1,000 tonnes per day; .3 all ports having ship repair yards or tank cleaning facilities; .4 all ports and terminals which receive ships provided with hydrocarbon residue (sludge) tank(s) as required by regulation 12 of this Annex; .5 all ports in respect of oily bilge water and other residues that cannot be discharged in accordance with regulations 15 and 34 of this Annex and paragraph 1.1.1 of part II-A of the Polar Code; and .6 all ports used for loading bulk cargoes in respect of hydrocarbon residues from combination carriers which cannot be discharged in accordance with regulation 34 of this Annex.
3 The capacity for reception facilities shall be as follows:
.1 Crude oil loading terminals shall have sufficient reception facilities to receive hydrocarbons and oily mixtures which cannot be discharged in accordance with the provisions of regulation 34.1 of this Annex from oil tankers on voyages as described in paragraph 2.1 of this regulation.
.2 Loading ports and terminals referred to in paragraph 2.2 of this regulation shall have sufficient reception facilities to receive hydrocarbons and oily mixtures which cannot be discharged in accordance with regulation 34.1 of this Annex from oil tankers which load hydrocarbons other than crude oil in bulk.
.3 All ports having ship repair yards or tank cleaning facilities shall have sufficient reception facilities to receive all residues and oily mixtures remaining on board for disposal before the ships enter such yards or facilities.
.4 All facilities provided in ports and terminals under paragraph 2.4 of this regulation shall have sufficient capacity to receive all residues retained on board in accordance with regulation 12 of this Annex from ships reasonably expected to call at such ports and terminals.
.5 All facilities provided in ports and terminals under this regulation shall have sufficient capacity to receive oily bilge water and other residues that cannot be discharged in accordance with regulation 15 of this Annex and paragraph 1.1.1 of part II-A of the Polar Code.
.6 The facilities provided in loading ports for bulk cargoes shall take into account the special problems of combination carriers.
4 The following States may satisfy the requirements of paragraphs 1 to 3 of this regulation through regional arrangements when, because of those States' unique circumstances, such arrangements are the only practical means of satisfying those requirements:
.1 small island developing States; and .2 States with coastlines bordering Arctic waters, provided that the regional arrangements only cover ports within those States' Arctic waters.
Parties participating in a regional arrangement shall develop a Regional Reception Facilities Plan, taking into account the guidelines developed by the Organization.
The Governments of Parties participating in the arrangement shall consult with the Organization, for circulation to the Parties to the present Convention:
.1 the manner in which the Regional Reception Facilities Plan takes into account the guidelines developed by the Organization; .2 particulars of the identified Regional Ships Waste Reception Centres, taking into account the guidelines developed by the Organization; and .3 particulars of those ports with only limited facilities.
B Reception facilities in special areas 5 The Governments of Parties to the present Convention whose coastlines border on a given special area shall ensure that all hydrocarbon loading terminals and repair ports within that special area are provided with adequate facilities for the reception and treatment of all dirty ballast and tank washings from oil tankers.
In addition, all ports in special areas shall be provided with adequate facilities for the reception of other residues and oily mixtures from all ships. Such facilities shall have adequate capacity to meet the needs of the ships using them without causing undue delay.
6 The following States may satisfy the requirements of paragraph 5 of this regulation through regional arrangements when, because of those States' unique circumstances, such arrangements are the only practical means of satisfying those requirements:
.1 small island developing States; and .2 States with coastlines bordering Arctic waters, provided that the regional arrangements only cover ports within those States' Arctic waters.
Parties participating in a regional arrangement shall develop a Regional Reception Facilities Plan, taking into account the guidelines developed by the Organization.
The Governments of Parties participating in the arrangement shall consult with the Organization, for circulation to the Parties to the present Convention:
.1 the manner in which the Regional Reception Facilities Plan takes into account the guidelines developed by the Organization; .2 particulars of the identified Regional Ships Waste Reception Centres, taking into account the guidelines developed by the Organization; and .3 particulars of those ports with only limited facilities.
7 The Governments of Parties to the present Convention whose jurisdiction extends to entrances to shallow waterways that require ships to reduce their draft by deballasting shall ensure the provision of the facilities referred to in paragraph 5 of this regulation, with the proviso that ships required to discharge slops or dirty ballast may be subject to some delay.
8 With respect to the Red Sea area, the Gulfs area, the Gulf of Aden area, and the Oman area of the Arabian Sea:
.1 The Parties concerned shall notify the Organization of the measures taken pursuant to the provisions of paragraphs 5 and 7 of this regulation. Upon receipt of a sufficient number of notifications, the Organization shall establish a date from which the requirements of regulations 15 and 34 of this Annex in respect of the area in question shall take effect. The Organization shall notify all Parties of that date at least twelve months in advance; .2 During the period between the entry into force of the present Convention and the date so established, ships navigating in the special area shall comply with the requirements of regulations 15 and 34 of this Annex regarding discharges outside special areas; .3 After such date, oil tankers loading in ports in these special areas where such facilities are not yet available shall also fully comply with the requirements of regulations 15 and 34 of this Annex regarding discharges in special areas. However, oil tankers entering these special areas for loading shall make every effort to enter the area with only clean ballast on board; .4 After the date on which the requirements for the special area in question take effect, each Party shall notify the Organization, for transmission to the Parties concerned, of all cases where the facilities are alleged to be inadequate.
.5 At least the reception facilities as required in paragraphs 1, 2 and 3 of this regulation shall be provided one year after the entry into force of the present Convention.
9 Notwithstanding paragraphs 5, 7 and 8 of this regulation, the following rules shall apply to the Antarctic area:
.1 The Governments of Parties to the present Convention whose ports are used by ships departing en route to, or arriving from, the Antarctic area undertake to ensure that adequate facilities are provided, as soon as practicable, for the reception of all hydrocarbon residues (sludge), dirty ballast, tank washings, and other residues and oily mixtures from all ships, without causing undue delay and according to the needs of the ships using them; .2 The Governments of Parties to the present Convention shall ensure that all ships entitled to fly their flag, before entering the Antarctic area, are fitted with a tank or tanks of sufficient capacity to retain on board all hydrocarbon residues (sludge), dirty ballast, tank washings, and other residues and oily mixtures while operating in the area, and have concluded arrangements to discharge such oily residues at a reception facility after leaving the area.
C General requirements 10 The Parties shall notify the Organization, for transmission to the Parties concerned, of all cases where the facilities provided under this regulation appear to be inadequate.
Regulation 39 Special requirements for fixed or floating platforms 1 This regulation applies to fixed or floating platforms, including drilling rigs, floating production, storage and offloading installations (FPSOs) used for the production and storage of hydrocarbons offshore, and floating storage units (FSUs) used for the offshore storage of produced hydrocarbons.
2 Fixed or floating platforms engaged in the exploration, exploitation and associated offshore processing of seabed mineral resources and other platforms shall comply with the requirements of this Annex applicable to ships of 400 gross tonnage and above, other than oil tankers, except that:
.1 they shall be equipped, as far as practicable, with the installations required in regulations 12 and 14 of this Annex; .2 they shall keep a record, in a form approved by the Administration, of all operations involving hydrocarbon or oily mixture discharges; and .3 subject to the provisions of regulation 4 of this Annex, the discharge into the sea of hydrocarbons or oily mixtures shall be prohibited except when the hydrocarbon content of the discharge without dilution does not exceed 15 ppm.
3 In verifying compliance with this Annex in relation to platforms configured as FPSOs or FSUs, Administrations shall take into account the Guidelines developed by the Organization in addition to the provisions of paragraph 2.
Regulation 40 Scope of application 1 The regulations in this chapter apply to oil tankers of 150 gross tonnage and above engaged in the transfer of hydrocarbon cargoes between oil tankers at sea (ship-to-ship operations) and to ship-to-ship operations conducted on or after 1 April 2012. However, ship-to-ship operations conducted before that date but after the approval by the Administration of the ship-to-ship operations plan required by regulation 41.1 shall be conducted in accordance with such ship-to-ship operations plan to the maximum extent possible.
2 The regulations in this chapter shall not apply to hydrocarbon transfer operations associated with fixed or floating platforms, including drilling rigs; floating production, storage and offloading installations (FPSOs) used for the offshore production and storage of hydrocarbons; and floating storage units (FSUs) used for the offshore storage of produced hydrocarbons.
3 The regulations in this chapter shall not apply to bunkering operations.
4 The regulations in this chapter shall not apply to ship-to-ship operations necessary to secure the safety of a ship or save life at sea, or for combating specific pollution incidents in order to minimize the damage from pollution.
5 The regulations in this chapter shall not apply to ship-to-ship operations where either of the ships is a warship, naval auxiliary or other ship owned or operated by a State and used, for the time being, only on government non-commercial service.
However, each State shall ensure, by the adoption of appropriate measures not impairing the operations or operational capabilities of such ships, that ship-to-ship operations are conducted in a manner consistent, so far as is reasonable and practicable, with this chapter.
Regulation 41 General rules on safety and environmental protection 1 Every oil tanker that participates in ship-to-ship operations shall carry on board a plan describing how to conduct such operations (ship-to-ship operations plan) no later than the date of the first annual, intermediate, or renewal survey of the ship conducted on or after 1 January 2011. The ship-to-ship operations plan of each oil tanker shall be approved by the Administration and shall be written in the working language of the ship.
2 The ship-to-ship operations plan shall be prepared taking into account the information contained in the best practice guidelines for ship-to-ship operations identified by the Organization. The ship-to-ship operations plan may be incorporated into the existing safety management system required under chapter IX of the International Convention for the Safety of Life at Sea, 1974, as amended, if that requirement is applicable to the oil tanker in question.
3 Any oil tanker subject to this chapter that engages in ship-to-ship operations shall comply with its ship-to-ship operations plan.
4 The person exercising overall advisory control of ship-to-ship operations shall be qualified to perform all relevant duties, taking into account the qualifications set out in the best practice guidelines for ship-to-ship operations identified by the Organization.
5 Records of ship-to-ship operations shall be retained on board for three years and shall be available for inspection by Parties to the present Convention.
Regulation 42 Notification 1 Any oil tanker subject to this chapter that intends to conduct ship-to-ship operations within the territorial sea or the exclusive economic zone of a Party to the present Convention shall notify that Party, at least 48 hours in advance, of the planned ship-to-ship operations. In the exceptional case where all of the information specified in paragraph 2 is not available at least 48 hours in advance, the oil tanker discharging the hydrocarbons shall notify the Party to the present Convention, not less than 48 hours in advance, that a ship-to-ship operation will take place and that the information specified in paragraph 2 will be communicated to the Party as soon as possible.
2 The notification specified in paragraph 1 of this regulation shall include at least the following information:
.1 name, flag, call sign, IMO number, and estimated time of arrival of the oil tankers involved in the ship-to-ship operations; .2 date, time, and geographical location of the start of the planned ship-to-ship operations; .3 whether the ship-to-ship operations are to be conducted at anchor or underway; .4 type of hydrocarbons and their quantity; .5 planned duration of the ship-to-ship operations; .6 identification of the ship-to-ship operations service provider or the person exercising overall advisory control and contact details; and .7 confirmation that the oil tanker has on board a ship-to-ship operations plan that complies with the requirements of regulation 41.
3 If the estimated time of arrival of an oil tanker at the location or area of the ship-to-ship operations changes by more than six hours, the master, owner, or agent of that oil tanker shall transmit a revised estimated time of arrival to the Party to the present Convention specified in paragraph 1 of this regulation.
CARRIAGE OF HYDROCARBONS IN POLAR WATERS Regulation 43 Special requirements for the use or carriage of hydrocarbons in the Antarctic area 1 Except for vessels engaged in ensuring the safety of ships or in a search and rescue operation, the carriage in bulk as cargo, use as ballast, or carriage and use as fuel of the following products:
.1 crude oils having a density higher than 900 kg/m³ at 15°C; .2 hydrocarbons, other than crude oils, having a density higher than 900 kg/m³ at 15°C or a kinematic viscosity higher than 180 mm²/s at 50°C; or .3 asphalt, tar and their emulsions, shall be prohibited in the Antarctic area, as defined in regulation 1.11.7 of Annex I.
2 When previous operations of the ship have included the carriage or use of the hydrocarbons listed in paragraphs 1.1 to 1.3 of this regulation, the cleaning or flushing of tanks and pipelines shall not be required.
Regulation 43A Special requirements for the use and carriage of hydrocarbons as fuel in Arctic waters 1 Except for ships engaged in ensuring the safety of ships or in a search and rescue operation, and for ships engaged in oil spill preparedness and response, the use and carriage of the hydrocarbons listed in regulation 43.1.2 of this annex as fuel by ships shall be prohibited in Arctic waters, as defined in regulation 46.2 of this annex, as of 1 July 2029.
2 Notwithstanding the provisions of paragraph 1 of this regulation, for ships to which regulation 12A of this annex or regulation 1.2.1 of chapter 1 of part II-A of the Polar Code applies, the use and carriage of the hydrocarbons listed in regulation 43.1.2 of this annex as fuel by such ships shall be prohibited in Arctic waters, as defined in regulation 46.2 of this annex, as of 1 July 2029.
3 When previous operations of the ship have included the use and carriage of the hydrocarbons listed in regulation 43.1.2 of this annex as fuel, the cleaning or flushing of tanks or pipelines shall not be required.
4 Notwithstanding the provisions of paragraphs 1 and 2 of this regulation, the Administration of a Party to the present Convention whose coastline borders on Arctic waters may, on a temporary basis, exempt from the provisions of paragraph 1 of this regulation ships entitled to fly the flag of that Party when operating in waters subject to the sovereignty or jurisdiction of that Party, taking into account the guidelines to be developed by the Organization. Exemptions granted in accordance with this paragraph shall not apply as of 1 July 2029.
5 The Administration of a Party to the present Convention that authorizes the application of paragraph 4 of this regulation shall communicate to the Organization the details of the relevant exemption for circulation to the Parties for their information and for such action as they may deem appropriate.
PRESENT CONVENTION Regulation 44 Scope of application Parties shall use the provisions of the Code for Implementation in the discharge of their obligations and responsibilities as contained in this annex.
Regulation 45 Verification of compliance 1 Each Party shall be subject to periodic audits by the Organization in accordance with the audit standard to verify compliance with and implementation of this annex.
2 The Secretary-General of the Organization shall be responsible for administering the Audit Scheme, based on the guidelines developed by the Organization.
3 Each Party shall be responsible for facilitating the conduct of the audits and the implementation of a programme of actions to address the findings, based on the guidelines developed by the Organization.
4 The audit of all Parties:
.1 shall be based on an overall schedule established by the Secretary-General of the Organization, taking into account the guidelines developed by the Organization; .2 shall be conducted at periodic intervals, taking into account the guidelines developed by the Organization.
WATERS Regulation 46 Definitions For the purposes of this annex:
1 Polar Code means the International Code for Ships Operating in Polar Waters, consisting of an introduction and parts I-A and II-A and parts I-B and II-B, as adopted by resolutions MSC.385(94) and MEPC.264(68), as amended, provided that:
.1 amendments to the environment-related provisions of the introduction and chapter 1 of part II-A of the Polar Code are adopted, brought into force, and take effect in accordance with the provisions of article 16 of the present Convention regarding the amendment procedures applicable to an appendix to an annex; and .2 amendments to part II-B of the Polar Code are adopted by the Marine Environment Protection Committee in accordance with its Rules of Procedure.
2 Arctic waters means the waters located north of a line from the latitude 58°00'.0 N and longitude 42°00'.0 W to latitude 64°37'.0 N and longitude 35°27'.0 W, and thence by a rhumb line to latitude 67°03'.9 N and longitude 26°33'.4 W, and thence by a rhumb line to the latitude 70°49'.56 N and longitude 8°59'.61 W (Sorkapp, Jan Mayen) and by the southern shore of Jan Mayen to 73°31'.6 N and 19°01'.0 E by the island of Bjornoya, and thence by a great circle line to latitude 68°38'.29 N and longitude 43°23'.08 E (Cape Kanin Nos) and hence along the northern coast of the Asian continent eastward to the Bering Strait and from there westward to latitude 60° N as far as Il'pyrskiy and then following the 60th North parallel eastward as far as and including Etolin Strait and then following the northern coast of the North American continent southward to latitude 60° N and then eastward along the parallel of 60° N to longitude 56°37'.1 W and from there to the latitude 58°00'.0 N and longitude 42°00'.0 W.
3 Polar waters means Arctic waters and/or the Antarctic area.
Regulation 47 Scope of application and requirements 1 This chapter applies to all ships operating in polar waters.
2 Unless expressly provided otherwise, any ship to which paragraph 1 of this regulation applies shall comply with the environment-related provisions of the introduction and with chapter 1 of part II-A of the Polar Code, in addition to any other applicable requirements of this annex.
3 In applying chapter 1 of part II-A of the Polar Code, the additional guidance in part II-B of the Polar Code should be taken into account.
Appendix to Annex I APPENDIX I - LIST OF HYDROCARBONS Asphalt solutions Bases for asphalt mixes Bituminous waterproofing materials First distillation residues Hydrocarbons Clarified oil Crude oils Mixtures containing crude oils Diesel oil Fuel oil No. 4 Fuel oil No. 5 Fuel oil No. 6 Residual fuel oil Road bitumen Transformer oil Aromatic oils (excluding vegetable oils) Lubricating oils and base oils Mineral oils Motor oils Penetrating oils Light oils (spindle) Turbine oils Distillates Straight-run column fractions Expansion cuts Gas oil Cracked Bases for gasolines Alkylate bases Reformate bases Polymer bases Gasolines Natural Automotive Aviation Straight-run Fuel oil No. 1 (kerosene) Fuel oil No. 1-D Fuel oil No. 2 Fuel oil No. 2-D Jet fuels JP-1 (kerosene) JP-3 JP-4 JP-5 (heavy kerosene) ATK (turbo-fuel) Kerosene Mineral spirit Naphthas Solvents Petroleum Heart-cut APPENDIX II MODEL OF THE IOPP CERTIFICATE AND SUPPLEMENTS INTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATE (Note: This Certificate shall be supplemented by a Record of Construction and Equipment) Issued under the provisions of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto, as amended, (hereinafter referred to as "the Convention") under the authority of the Government of:
(full official name of the country) by (full name of the competent person or organization authorized under the provisions of the Convention) Particulars of ship Name of ship Distinctive number or letters Port of registry Gross tonnage Deadweight of ship (tonnes) IMO Number Type of ship:
Oil tanker Ship other than an oil tanker fitted with cargo tanks subject to the provisions of regulation 2.2 of Annex I of the Convention.
Ship other than any of the above.
THIS IS TO CERTIFY:
1. That the ship has been surveyed in accordance with the provisions of regulation 6 of Annex I of the Convention; and 2. That the survey shows that the structure, equipment, systems, fittings, arrangements, and materials of the ship and the condition thereof are in all respects satisfactory and that the ship complies with the applicable requirements of Annex I of the Convention.
This certificate is valid until (dd/mm/yyyy): subject to the completion of surveys in accordance with regulation 6 of Annex I of the Convention.
Completion date of the survey on which this certificate is based (dd/mm/yyyy):
Issued at (place of issue of the certificate) on (dd/mm/yyyy) (date of issue) (signature of duly authorized official issuing the certificate) (seal or stamp, as appropriate, of the issuing authority) ENDORSEMENT FOR ANNUAL AND INTERMEDIATE SURVEYS THIS IS TO CERTIFY that at a survey carried out in accordance with the provisions of regulation 6 of Annex I of the Convention, the ship was found to comply with the relevant provisions of the Convention:
Annual survey: Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) Annual/intermediate Signed:
survey: (signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) Annual/intermediate Signed:
survey: (signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) Annual survey: Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) ANNUAL/INTERMEDIATE SURVEY IN ACCORDANCE WITH REGULATION 10.8.3 THIS IS TO CERTIFY that at an annual/intermediate survey carried out in accordance with the provisions of regulation 10.8.3 of Annex I of the Convention, the ship was found to comply with the relevant provisions of the Convention:
Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) ENDORSEMENT TO EXTEND THE CERTIFICATE, IF VALID FOR A PERIOD OF LESS THAN FIVE YEARS, WHERE REGULATION 10.3 APPLIES The ship complies with the relevant provisions of the Convention, and this certificate shall, in accordance with the provisions of regulation 10.3 of Annex I of the Convention, be accepted as valid until (dd/mm/yyyy):
Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy) : ... ........... ............
(seal or stamp, as appropriate, of the authority) ENDORSEMENT REQUIRED WHERE THE RENEWAL SURVEY HAS BEEN COMPLETED AND REGULATION 10.4 APPLIES The ship complies with the relevant provisions of the Convention, and this certificate shall, in accordance with the provisions of regulation 10.4 of Annex I of the Convention, be accepted as valid until (dd/mm/yyyy):
Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) ENDORSEMENT TO EXTEND THE VALIDITY OF THE CERTIFICATE UNTIL REACHING THE PORT OF SURVEY OR FOR A PERIOD OF GRACE, WHERE REGULATIONS 10.5 OR 10.6 APPLY In accordance with the provisions of regulations 10.5 or 10.6 of Annex I of the Convention, this Certificate shall be accepted as valid until (dd/mm/yyyy):
Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) ENDORSEMENT TO ADVANCE THE ANNUAL EXPIRY DATE WHERE REGULATION 10.8 APPLIES In accordance with the provisions of regulation 10.8 of Annex I of the Convention, the new annual Signed:
(signature of authorized official) Place:
Date:
(seal or stamp, as appropriate, of the authority) In accordance with the provisions of regulation 10.8 of Annex I of the Convention, the new annual ......
Signed:
(signature of authorized official) Place:
Date (dd/mm/yyyy):
(seal or stamp, as appropriate, of the authority) Appendix MODEL A Supplement to the International Oil Pollution Prevention Certificate (IOPP Certificate) RECORD OF CONSTRUCTION AND EQUIPMENT FOR SHIPS OTHER THAN OIL TANKERS in accordance with the provisions of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (hereinafter referred to as "the Convention").
1 Particulars of ship 1.1 Name of ship 1.2 Distinctive number or letters 1.3 Port of registry 1.4 Gross tonnage 1.5 Date of build:
1.5.1 Date of building contract 1.5.2 Date on which keel was laid or ship was at a similar stage of construction 1.5.3 Date of delivery 1.6 Major conversion (if applicable):
1.6.1 Date of contract for major conversion 1.6.2 Date on which major conversion was commenced 1.6.3 Date of completion of major conversion 1.7 The ship has been accepted by the Administration as a ship delivered on or before 31 December 1979 in accordance with regulation 1.25.1 due to unforeseen delay in delivery 2 Equipment for the control of oil discharge from machinery space bilges and oil fuel tanks (regulations 16 and 14) 2.1 Carriage of ballast water in oil fuel tanks:
2.1.1 The ship may, under normal conditions, carry ballast water in oil fuel tanks.
2.2 Type of oil filtering equipment fitted on the ship:
2.2.1 Oil filtering equipment (15 ppm) (regulation 14.6) q 2.2.2 Oil filtering equipment (15 ppm), with alarm and automatic stopping device (regulation 14.7) 2.3 Standards of approval:
2.3.1 The separating/filtering equipment:
.1 has been approved in accordance with resolution A.393(X) q .2 has been approved in accordance with resolution MEPC.60(33) q .3 has been approved in accordance with resolution MEPC.107(49) q .4 has been approved in accordance with resolution A.233(VII) q .5 has been approved in accordance with national standards not based on resolutions A.393(X) or A.233(VII) .6 has not been approved 2.3.2 The processing unit has been approved in accordance with resolution A.444(XI) q 2.3.3 The oil content meter:
.1 has been approved in accordance with resolution A.393(X) .2 has been approved in accordance with resolution MEPC.60(33) .3 has been approved in accordance with resolution MEPC.107(49) 2.4 The maximum throughput of the system is m³/h.
2.5 Waiver of the requirements of regulation 14:
2.5.1 The ship is waived from the requirements of paragraph 1 or 2 of regulation 14 in accordance with regulation 14.5.
2.5.1.1 The ship is exclusively engaged in voyages within the special area(s):
2.5.1.2 The ship is certified under the International Code of Safety for High-Speed Craft, and is engaged on regular voyages with a turnaround time not exceeding 24 hours 2.5.2 The ship is fitted with holding tanks for the total retention on board of all oily bilge water as follows:
| Tank identification | Tank location | Volume (m³) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume............... m³ |
2A.1 The ship is required to be constructed in accordance with regulation 12A and complies with the requirements of:
paragraph 6 and paragraph 7 or 8 (double-hull construction) q paragraph 11 (accidental oil fuel leak prevention capability) 2A.2 The ship is not required to comply with the requirements of regulation 12A.
3 Means for retention and disposal of oil residues (sludge) (regulation 12) and oily bilge water holding tanks 3.1 The ship is provided with the following oil residue (sludge) tanks for the retention of oil residues (sludge) on board:
| Tank identification | Tank location | Volume (m³) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume m³ |
3.2 Means for the disposal of oil residues (sludge) retained in oil residue (sludge) tanks:
3.2.1 Incineration of oil residues (sludge); or 3.2.2 Auxiliary boiler suitable for burning oil residues (sludge) 3.2.3 Other acceptable means (indicate which) 3.3 The ship is provided with the following holding tanks for the retention on board of oily bilge water:
| Tank identification | Tank location | Volume (m³) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume............... m³ |
4 Standard discharge connection (regulation 13) 4.1 The ship is provided with a pipeline for the discharge of machinery space bilge residues and sludge to reception facilities, fitted with a standard discharge connection in accordance with regulation 13 5 Shipboard oil pollution/marine pollution emergency plan (regulation 37) 5.1 The ship is provided with a shipboard oil pollution emergency plan in compliance with regulation 37 5.2 The ship is provided with a shipboard marine pollution emergency plan in compliance with regulation 37.3 6 Exemptions 6.1 The Administration has granted exemptions from the requirements of chapter 3 of Annex I of the Convention, in accordance with regulation 3.1, with respect to the items listed in the paragraph(s) of this record.
7 Equivalents (regulation 5) 7.1 The Administration has approved equivalent arrangements to certain requirements of Annex I with respect to the items listed in the paragraph(s) of this record 8 Compliance with chapter 1 of part II-A of the Polar Code 8.1 The ship complies with the additional requirements set out in the environment-related provisions of the introduction and section 1.2 of chapter 1 of part II-A of the Polar Code THIS IS TO CERTIFY that this Record is correct in all respects.
Issued at (place of issue of the Record) on (dd/mm/yyyy):
(date of issue) (signature of the duly authorized official issuing the Record) (seal or stamp, as appropriate, of the issuing authority) MODEL B Supplement to the International Oil Pollution Prevention Certificate RECORD OF CONSTRUCTION AND EQUIPMENT FOR OIL TANKERS in accordance with the provisions of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (hereinafter referred to as "the Convention").
Notes:
1 This model shall be used for the first two types of ships indicated on the IOPP Certificate, i.e., "oil tankers" and "ships other than oil tankers fitted with cargo tanks subject to the provisions of regulation 2.2 of Annex I of the Convention". For the third type of ship indicated on the IOPP Certificate, Model A shall be used.
2 This Record shall be permanently attached to the IOPP Certificate. This Certificate shall be available on board the ship at all times.
3 If the language of the original Record is neither Spanish, French nor English, the text shall include a translation into one of these languages.
4 Entries in boxes shall be made by inserting either a cross (x) for the answers "yes" and "applicable", or a dash (-) for the answers "no" and "not applicable".
5 Unless otherwise stated, regulations mentioned in this Record refer to the regulations of Annex I of the Convention, and resolutions refer to those adopted by the International Maritime Organization.
1 Particulars of ship 1.1 Name of ship 1.2 Distinctive number or letters 1.3 Port of registry 1.4 Gross tonnage 1.5 Cargo carrying capacity of ship.. (m³) 1.6 Deadweight of ship (in tonnes) (regulation 1.23) 1.7 Length of ship 1.8 Date of build:
1.8.1 Date of building contract 1.8.2 Date on which keel was laid or ship was at a similar stage of construction 1.8.3 Date of delivery 1.9 Major conversion (if applicable):
1.9.1 Date of contract for major conversion 1.9.2 Date on which major conversion was commenced 1.9.3 Date of completion of major conversion 1.10 Unforeseen delay in delivery:
1.10.1 The ship has been accepted by the Administration as a "ship delivered on or before 31 December 1979", in accordance with regulation 1.28.1, due to unforeseen delay in delivery 1.10.2 The ship has been accepted by the Administration as an "oil tanker delivered on or before 1 June 1982", in accordance with regulation 1.28.3, due to unforeseen delay (m) (regulation 1.19) in delivery 1.10.3 The ship is not required to comply with the provisions of regulation 26, due to unforeseen delay in delivery 1.11 Type of ship:
1.11.1 Crude oil tanker 1.11.2 Product oil tanker 1.11.3 Product oil tanker not carrying heavy fuel oil or heavy diesel oil as specified in regulation 20.2, nor lubricating oil 1.11.4 Crude/product oil tanker 1.11.5 Combination carrier 1.11.6 Ship other than an oil tanker fitted with cargo tanks subject to regulation 2.2 of Annex I of the Convention 1.11.7 Oil tanker dedicated to the carriage of the products mentioned in regulation 2.4 2 Equipment for the control of oil discharge from machinery space bilges and oil fuel tanks (regulations 16 and 14) 2.1 Carriage of ballast water in oil fuel tanks:
2.1.1 The ship may, under normal conditions, carry ballast water in oil fuel tanks ......
2.2 Type of oil filtering equipment fitted on the ship:
2.2.1 Oil filtering equipment (15 ppm) (regulation 14.6) or 2.2.2 Oil filtering equipment (15 ppm), with alarm and automatic stopping device (regulation 14.7) 2.3 Standards of approval:
2.3.1 The separating/filtering equipment:
.1 has been approved in accordance with resolution A.393(X) .2 has been approved in accordance with resolution MEPC.60(33) .3 has been approved in accordance with resolution MEPC.107(49) .4 has been approved in accordance with resolution A.233(VII) .5 has been approved in accordance with national standards not based on resolution A.393(X) nor on resolution A.233(VII) .6 has not been approved 2.3.2 The processing unit has been approved in accordance with resolution A.444(XI) 2.3.3 The oil content meter:
.1 has been approved in accordance with resolution A.393(X) .2 has been approved in accordance with resolution MEPC.60(33) .3 has been approved in accordance with resolution MEPC.107(49) 2.4 The maximum throughput of the system is m³/h.
2.5 Waiver of the requirements of regulation 14:
2.5.1 The ship is waived from the requirements of regulation 14.1 and 14.2 in accordance with regulation 14.5.
The ship is exclusively engaged in voyages within the special area(s) 2.5.2 The ship is fitted with holding tanks for the total retention on board of all oily bilge water, as follows:
| Tank identification | Tank location | Volume (m³) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume: .... m³ |
2.5.3 In lieu of holding tanks, the ship is provided with arrangements for the transfer of bilge water to the slop tank q 2A.1 The ship is required to be constructed in accordance with regulation 12A and complies with the requirements of:
paragraph 6 and paragraph 7 or 8 (double-hull construction) paragraph 11 (accidental oil fuel leak prevention capability) 2A.2 The ship is not required to comply with the requirements of regulation 12A 3 Means for retention and disposal of oil residues (sludge) (regulation 12) and oily bilge water holding tanks 3.1 The ship is provided with the following oil residue (sludge) tanks for the retention of oil residues (sludge) on board:
| Tank identification | Tank location | Volume (m3) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume: ..... m3 |
3.2 Means for the elimination of oil residues (sludge) retained in oil residue (sludge) tanks:
3.2.1 Incinerator for oil residues (sludge) q 3.2.2 Auxiliary boiler suitable for incinerating oil residues (sludge) q 3.2.3 Other acceptable means (specify which) q 3.3 The ship is provided with the following holding tanks for the retention on board of oily bilge water:
| Tank identification | Tank location | Volume (m3) |
|---|---|---|
| From frame . to . | Lateral position | |
| Total volume: m3 |
4 Standard discharge connection (regulation 13) 4.1 The ship is provided with a pipeline for the discharge to reception facilities of residues from machinery bilges and oil residues (sludge), fitted with a standard discharge connection in accordance with regulation 13 q 5 Construction (regulations 18, 19, 20, 21, 22, 23, 26, 27, 28 and 33) 5.1 In accordance with the requirements of regulation 18, the ship is considered as a ship with segregated ballast tanks, in compliance with regulation 18.9 q 5.2 The segregated ballast tanks, in compliance with regulation 18, are distributed as follows:
5.3 Crude oil washing:
5.3.1 The ship is provided with a crude oil washing system in compliance with regulation 33 q 5.3.2 The ship is provided with a crude oil washing system in compliance with regulation 33, except that the effectiveness of the system has not been verified in accordance with regulation 33.1 and paragraph 4.2.10 of the Revised Specifications for the Design, Operation and Control of Crude Oil Washing Systems (resolution A.446(XI), amended by resolutions A.497(XII) and A.897(21)) q 5.3.3 An updated Crude Oil Washing Operations and Equipment Manual, dated . , has been provided to the ship q 5.3.4 The ship is not required to be provided with a crude oil washing system but is provided with such a system in compliance with the safety requirements of the Revised Specifications for the Design, Operation and Control of Crude Oil Washing Systems (resolution A.446(XI), amended by resolutions A.497(XII) and A.897(21)) 5.4 Arrangement of cargo tanks and limitation of their capacity (regulation 26):
5.4.1 The ship must be constructed in accordance with the requirements of regulation 26 and complies with them..
5.4.2 The ship must be constructed in accordance with the requirements of regulation 26.4 and complies with them (see regulation 2.2) 5.5 Subdivision and stability (regulation 28):
5.5.1 The ship must be constructed in accordance with the requirements of regulation 28 and complies with them 5.5.2 The information and data prescribed in regulation 28.5 have been provided to the ship in an approved form 5.5.3 The ship must be constructed in accordance with the requirements of regulation 27 and complies with them 5.5.4 The information and data prescribed in regulation 27 for combined carriers have been provided to the ship in writing in a manner approved by the Administration 5.5.5 The ship is provided with a stability instrument approved in accordance with regulation 28.6) 5.5.6 The ship is exempted from the requirements of regulation 28.6) in accordance with regulation 3.6.
Stability is verified by one or more of the following means:
.1 loading is only carried out under the approved conditions indicated in the stability information provided to the master in accordance with regulation 28.5) ......
.2 verification is carried out remotely by means approved by the Administration .3 loading is carried out in accordance with an approved range of loading conditions indicated in the stability information provided to the master in accordance with regulation 28.5 .4 loading is carried out in accordance with the approved KG/GM limit curves covering all applicable intact and damage stability requirements indicated in the stability information provided to the master in accordance with regulation 28.5) 5.6 Double-hull construction:
5.6.1 The ship shall be constructed in accordance with regulation 19, and complies with the requirements of:
.1 paragraph 3) (double-hull construction) q .2 paragraph 4) (mid-deck construction with double side skin) .3 paragraph 5) (equivalent method approved by the Marine Environment Protection Committee) 5.6.2 The ship shall be constructed in accordance with the requirements of regulation 19.6 and complies with them 5.6.3 The ship is not required to comply with the requirements of regulation 19 5.6.4 The ship is subject to regulation 20 and:
.1 must comply with the requirements of paragraphs 2 to 5, 7 and 8 of regulation 19 and regulation 28 with respect to the stipulations of paragraph 28.7 by no later than .2 is permitted to continue operation in accordance with regulation 20.5 until .3 is permitted to continue operation in accordance with regulation 20.7 until 5.6.5 The ship is not subject to regulation 20 (tick the applicable box or boxes):
.1 The ship has a deadweight of less than 5,000 tonnes .2 The ship complies with the requirements of regulation 20.1.2 .3 The ship complies with the requirements of regulation 20.1.3 5.6.6 The ship is subject to regulation 21 and:
.1 must comply with regulation 21.4 by no later than q .2 is permitted to continue operation in accordance with regulation 21.5 until .3 is permitted to continue operation in accordance with regulation 21.6.1 until .4 is permitted to continue operation in accordance with regulation 21.6.2 until .5 is exempted from the provisions of regulation 21 in accordance with regulation 21.7.2 5.6.7 The ship is not subject to regulation 21 (tick the applicable box or boxes):
.1 The ship has a deadweight of less than 600 tonnes .2 The ship complies with the requirements of regulation 19 (deadweight tonnes ? 5,000) .3 The ship complies with the requirements of regulation 21.1.2 .4 The ship complies with the requirements of regulation 21.4.2 (600 < deadweight tonnes < 5,000) .5 The ship does not carry "heavy grade oil" as defined in regulation 21.2 of Annex I of the MARPOL Convention ...
5.6.8 The ship is subject to regulation 22 and:
.1 complies with the requirements of regulation 22.2 .2 complies with the requirements of regulation 22.3 .3 complies with the requirements of regulation 22.5 5.6.9 The ship is not subject to regulation 22 5.7 Suitability for the prevention of accidental oil outflow:
5.7.1 The ship complies with the requirements of regulation 23 6 Retention of oil on board (regulations 29, 31 and 32) 6.1 Oil discharge monitoring and control system:
6.1.1 The ship falls into the category of oil tanker as defined in resolution A.496(XII) or A.586(14) (delete as appropriate) 6.1.2 The oil discharge monitoring and control system has been approved in accordance with resolution MEPC.108(49) 6.1.3 The system comprises:
.1 a control unit .2 a computing unit .3 a calculating unit 6.1.4 The system is fitted with:
.1 a starting interlock mechanism .2 an automatic stopping device 6.1.5 The oil content meter has been approved in accordance with the provisions of resolution A.393(X) or A.586(14) or MEPC.108(49) (delete as appropriate) and is suitable for:
.1 crude oils .2 black products .3 white products or 6.1.6 An operating manual for the oil discharge monitoring and control system has been provided to the ship 6.2 Slop tanks:
6.2.1 The ship is provided with ..... dedicated slop tank(s) with a total capacity of ...... m3, which represents ...... % of its oil-carrying capacity, in accordance with:
.1 regulation 29.2.3 .2 regulation 29.2.3.1 .3 regulation 29.2.3.2 .4 regulation 29.2.3.3 6.2.2 Cargo tanks have been designated as slop tanks 6.3 Oil/water interface detectors:
6.3.1 The ship is provided with oil/water interface detectors approved in accordance with the stipulations of resolution MEPC.5(XIII) 6.4 Exemptions from compliance with regulations 29, 31 and 32:
6.4.1 The ship is exempted from the requirements of regulations 29, 31 and 32, in accordance with regulation 2.4 6.4.2 The ship is exempted from the requirements of regulations 29, 31 and 32, in accordance with regulation 2.2 6.5 Waiver from the provisions of regulations 31 and 32:
6.5.1 The ship is waived from the provisions of regulations 31 and 32 in accordance with regulation 3.5. The ship is exclusively engaged in:
.1 specific trades in accordance with regulation 2.5 .2 voyages within (the) special area(s):
.3 voyages up to 50 nautical miles from the nearest land outside (the) special area(s), of 72 hours or less in duration, restricted to:
7 Pump, piping and discharge arrangements (regulation 30) 7.1 The overboard discharge outlets for the discharge of segregated ballast at sea are situated:
7.1.1 Above the waterline 7.1.2 Below the waterline 7.2 The overboard discharge outlets for the discharge of clean ballast at sea, other than the discharge manifold, are situated:
7.2.1 Above the waterline 7.2.2 Below the waterline 7.3 The overboard discharge outlets, other than the discharge manifold, for the discharge at sea of dirty water or water contaminated by oil, from cargo tank areas, are situated:
7.3.1 Above the waterline 7.3.2 Below the waterline in conjunction with the part-flow system, in compliance with regulation 30.6.5 7.3.3 Below the waterline 7.4 Discharge of oil from cargo pumps and oil lines (paragraphs 4 and 5 of regulation 30):
7.4.1 Means for draining all cargo pumps and all oil lines upon completion of cargo discharge:
.1 possibility of discharging residues to a cargo tank or slop tank .2 a special small-diameter line has been provided for discharge ashore 8 Shipboard oil/ marine pollution emergency plan (regulation 37) 8.1 The ship carries on board a shipboard oil pollution emergency plan, in compliance with regulation 37 ..
8.2 The ship is provided with a shipboard marine pollution emergency plan, in compliance with regulation 37.3 8A Ship-to-ship oil transfer operations at sea (regulation 41) 8A.1 The oil tanker is provided with a ship-to-ship operations plan, in compliance with regulation 41 9 Exemptions 9.1 The Administration has granted exemptions from compliance with the requirements of chapter 3 of Annex I of the Convention, in accordance with regulation 3.1, with respect to the items listed in the paragraph(s) of this supplement 10 Equivalents (regulation 5) 10.1 The Administration has approved arrangements equivalent to certain requirements of Annex I with respect to the items listed in the paragraph(s) of this supplement 11 Compliance with chapter 1 of part II-A of the Polar Code 11.1 The ship complies with the additional requirements set out in the environmental provisions of the introduction and section 1.2 of chapter I of part II-A of the Polar Code THIS IS TO CERTIFY that this supplement is correct in all respects.
Issued at (place of issue of the supplement) on (dd/mm/yyyy) (date of issue) (signature of the duly authorized official issuing the supplement) (seal or stamp, as appropriate, of the issuing authority) APPENDIX III MODEL FORM OF OIL RECORD BOOK OIL RECORD BOOK PART I - Machinery space operations (All ships) Name of ship:
Distinctive number or letters:
Gross tonnage:
Period from: to:
Note: Every oil tanker of 150 tons gross tonnage and above and every ship of 400 tons gross tonnage and above other than an oil tanker shall be provided with Part I of the Oil Record Book to record the relevant machinery space operations. For oil tankers, Part II of the Oil Record Book shall also be provided to record the relevant cargo/ballast operations.
Introduction On the following pages of this section, a comprehensive list of items relating to machinery space operations is provided which shall, as appropriate, be recorded in the Oil Record Book, Part I, in accordance with regulation 17 of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 (MARPOL 73/78). The items have been grouped into operational sections, each designated by a letter code.
When making entries in the Oil Record Book, Part I, the date, operational code and item number shall be inserted in the appropriate columns and the required particulars shall be recorded chronologically in the blank spaces.
Each completed operation shall be signed for and dated by the officer or officers in charge of that operation. Each completed page shall be countersigned by the master of the ship.
The Oil Record Book, Part I, contains many references to oil quantity. However, the limited accuracy of tank measurement devices, temperature variations and clingage will affect the accuracy of these readings and the entries in the Oil Record Book, Part I, should be considered accordingly.
In the event of accidental or other exceptional discharge of oil, a statement shall be made in the Oil Record Book, Part I, of the circumstances of, and the reasons for, the discharge.
Any failure of the oil filtering equipment shall be noted in the Oil Record Book, Part I.
The entries in the Oil Record Book, Part I, for ships holding an IOPP Certificate, shall be at least in Spanish, French or English. Where entries in an official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a controversy or discrepancy.
The Oil Record Book, Part I, shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board. It shall be preserved for a period of three years after the last entry has been made.
The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book, Part I, on board any ship to which this Annex applies while the ship is in its ports or offshore terminals and may make a copy of any entry in that Book, and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made, which has been certified by the master of the ship as a true copy of an entry in the Oil Record Book, Part I, shall be made admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book, Part I, and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
LIST OF ITEMS TO BE RECORDED A) Ballasting or cleaning of fuel oil tanks 1 Identity of the tank or tanks ballasted.
2 State whether cleaned since they last contained oil and, if not, the type of oil previously carried.
3 Cleaning:
.1 position of ship and time at the start and completion of cleaning; .2 identity of the tank or tanks in which one or another method of cleaning has been employed (rinsing through with water; steam cleaning; using chemicals, stating the type and quantity of chemicals used, in m3); .3 identity of the tanks to which the cleaning water was transferred and the quantity, in m3.
4 Ballasting:
.1 position of ship and time at start and end of ballasting; .2 quantity of ballast, if tanks are not clean, in m3.
- B)Discharges of dirty ballast or cleaning water from tanks referred to in section A) 5 Identity of the tank or tanks.
6 Position of ship at start of discharge.
7 Position of ship at completion of discharge.
8 Ship's speed or speeds during discharge.
9 Method of discharge:
.1 through 15 ppm equipment; .2 to reception facilities.
10 Quantity discharged, in m3.
- C)Collection, transfer and disposal of oil residues (sludge) 11 Collection of oil residues (sludge).
Quantity of oil residues (sludge) retained on board. The quantity shall be recorded weekly (this means that the quantity shall be recorded once a week even if the voyage lasts more than one week):
.1 identity of tank(s) .2 capacity of tank(s) m3 .3 total quantity retained m3 .4 quantity of residues collected by manual operation m3 (The operator initiated manual collections where oil residues (sludge) are transferred to the oil residue (sludge) tank(s).)
12 Methods of transfer or disposal of oil residues (sludge). State the quantity of oil residues transferred or disposed of, the tanks emptied and the quantity of residues retained, in m3:
.1 to reception facilities (identify port); .2 to other tanks (identify tanks and their total content); 3 incinerated (state total time of the operation); .4 other method (specify).
- D)Non-automatic start of the discharge overboard, transfer or other method of disposal of bilge water accumulated in machinery spaces 13 Quantity discharged, transferred or disposed of, in m3.
14 Time of discharge, transfer or disposal (start and end).
15 Method of discharge, transfer or disposal:
.1 through 15 ppm equipment (state position of ship at start and end); .2 to reception facilities (identify port); .3 to slop tank, holding tank or other tanks (identify tanks, stating the total quantity retained in each tank, in m3).
- E)Automatic start of the discharge overboard, transfer or other method of disposal of bilge water accumulated in machinery spaces 16 Position of ship and time when the system has been put into automatic mode of operation for discharge overboard, through 15 ppm equipment.
17 Time when the system has been put into automatic mode of operation for transferring bilge water to a holding tank (identify tank).
18 Time when the system has been put into manual operation.
- F)Condition of oil filtering equipment 19 Time of system failure.
20 Time when the system was restored to operation.
21 Reasons for failure.
- G)Accidental or other exceptional discharges of oil 22 Time of occurrence.
23 Place or position of ship at time of occurrence.
24 Approximate quantity and type of oil.
25 Circumstances of the discharge or escape, reasons therefor and general remarks.
- H)Bunkering of fuel or bulk lubricating oil 26 Bunkering:
.1 place of bunkering.
.2 time of bunkering.
.3 type and quantity of fuel and identity of tank(s) (state the quantity added, in tonnes, and the total content of tank(s)); .4 type and quantity of lubricating oil and identity of tank(s) (state the quantity added, in tonnes, and the total content of tank(s)).
- I)Additional operational procedures and general remarks Name of ship Distinctive number or letters MACHINERY SPACE OPERATIONS OIL RECORD BOOK PART II - Cargo/ballast operations (Oil tankers) Name of ship:
Distinctive number or letters:
Gross tonnage:
Period from: to:
Note: Every oil tanker of 150 tons gross tonnage and above shall be provided with Part II of the Oil Record Book to record the relevant cargo/ballast operations. Such oil tankers shall also be provided with Part I of the Oil Record Book to record the relevant machinery space operations.
Name of ship Distinctive number or letters PLAN VIEW OF CARGO AND SLOP TANKS (to be completed on board) Introduction On the following pages of this section, a comprehensive list of items relating to cargo and ballast operations is provided which shall, as appropriate, be recorded in the Oil Record Book, Part II, in accordance with regulation 36 of Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 (MARPOL 73/78 Convention). The items have been grouped into operational sections, each designated by a letter code.
When making entries in the Oil Record Book, Part II, the date, operational code and item number shall be inserted in the appropriate columns and the required particulars shall be recorded chronologically in the blank spaces.
Each completed operation shall be signed for and dated by the officer or officers in charge of that operation. Each completed page shall be countersigned by the master of the ship.
In respect of oil tankers engaged in specific trades in accordance with regulation 2.5 of Annex I of the MARPOL 73/78 Convention, the relevant entry in the Oil Record Book, Part II, shall be endorsed by the competent authority of the port State.
The Oil Record Book, Part II, contains many references to oil quantity. However, the limited accuracy of tank measurement devices, temperature variations and clingage will affect the accuracy of these readings and the entries in the Oil Record Book, Part II, should be considered accordingly.
In the event of accidental or other exceptional discharge of oil, a statement shall be made in the Oil Record Book, Part II, of the circumstances of, and the reasons for, the discharge.
Any failure of the oil discharge monitoring and control system shall be noted in the Oil Record Book, Part II.
The entries in the Oil Record Book, Part II, for ships holding an IOPP Certificate, shall be at least in Spanish, French or English. Where entries in an official language of the State whose flag the ship is entitled to fly are also used, this shall prevail in case of a controversy or discrepancy.
The Oil Record Book, Part II, shall be kept in such a place as to be readily available for inspection at all reasonable times and, except in the case of unmanned ships under tow, shall be kept on board. It shall be preserved for a period of three years after the last entry has been made.
The competent authority of the Government of a Party to the Convention may inspect the Oil Record Book, Part II, on board any ship to which this Annex applies while the ship is in its ports or offshore terminals and may make a copy of any entry in that Book, and may require the master of the ship to certify that the copy is a true copy of such entry. Any copy so made, which has been certified by the master of the ship as a true copy of an entry in the Oil Record Book, Part II, shall be made admissible in any judicial proceedings as evidence of the facts stated in the entry. The inspection of an Oil Record Book, Part II, and the taking of a certified copy by the competent authority under this paragraph shall be performed as expeditiously as possible without causing the ship to be unduly delayed.
LIST OF ITEMS TO BE RECORDED A) Loading of oil cargo 1 Place of loading.
2 Type of oil loaded and identity of tanks.
3 Total quantity of oil loaded (state the quantity added, in m3, at 15° C and the total content of tanks, in m3).
- B)Internal transfer of oil cargo during voyage 4 Identity of tanks:
.1 from:
.2 to: (state the quantity transferred and the total content of tanks, in m3).
5 Were the tanks mentioned in 4.1 emptied? (If not, state the quantity retained, in m3).
- C)Unloading of oil cargo 6 Place of unloading.
7 Identity of tanks unloaded.
8 Were the tanks emptied? (If not, state the quantity retained, in m3).
- D)Crude oil washing (applicable only to tankers fitted with such a washing system) (An entry shall be made for each tank washed with crude oil) 9 Port where crude oil washing was carried out, or ship's position if carried out between two discharge ports.
10 Identity of tanks washed.
11 Number of machines used.
12 Time of start of washing.
13 Washing pattern employed.
14 Washing line pressure.
15 Time washing was completed or interrupted.
16 State the method used to ascertain that the tanks were dry.
17 Remarks.
- E)Ballasting of cargo tanks 18 Position of ship at start and end of ballasting.
19 Ballasting:
.1 identity of tanks ballasted; .2 time at start and end; .3 quantity of ballast. State the total quantity of ballast for each tank involved in the operation, in m3.
- F)Ballasting of tanks dedicated to clean ballast (applicable only to tankers fitted with such tanks) 20 Identity of tanks ballasted.
21 Position of ship when water intended for flushing, or port ballast, was taken into tanks dedicated to clean ballast.
22 Position of ship when pumps and lines were flushed to the slop tank.
23 Quantity of oily water which, after line flushing, is transferred to the slop tank(s) or cargo tanks in which the residues are initially stored (identify tanks). State the total quantity, in m3.
24 Position of ship when additional ballast water was taken into tanks dedicated to clean ballast.
25 Time and position of ship when valves separating the tanks dedicated to clean ballast from cargo and stripping lines were closed.
26 Quantity of clean ballast taken on board, in m3.
- G)Cleaning of cargo tanks 27 Identity of tanks cleaned.
28 Port or ship's position.
29 Duration of cleaning.
30 Method of cleaning.
31 Tank washings were transferred to:
.1 reception facilities (state port and quantity, in m3); .2 slop tank(s) or cargo tank(s) designated as slop tank(s) (identify tank(s); state quantity transferred and total quantity, in m3).
- H)Discharge of dirty ballast 32 Identity of tanks.
33 Time and position of ship at start of discharge into the sea.
34 Time and position of ship at completion of discharge into the sea.
35 Quantity discharged into the sea, in m3.
36 Ship's speed(s) during discharge.
37 Was the monitoring and control system in operation during the discharge?
38 Were the effluent and the water surface at the discharge site checked regularly?
39 Quantity of oily water transferred to slop tank(s) (identify slop tank(s)). State the total quantity, in m3 40 Ballast discharged to shore reception facilities (identify port and state quantity, in m3).
- I)Discharge overboard of water from slop tanks 41 Identity of slop tanks.
42 Time of settling from the last entry of residues, or 43 Time of settling from the last discharge.
44 Time and position of ship at start of discharge.
45 Tank level at start of discharge.
46 Oil/water interface level at start of discharge.
47 Bulk quantity discharged, in m3, and rate of discharge, in m3/h.
48 Final quantity discharged, in m3, and rate of discharge, in m3/h.
49 Time and position of ship at completion of discharge.
50 Was the monitoring and control system in operation during the discharge?
51 Oil/water interface level at completion of discharge.
52 Ship's speed(s) during discharge.
53 Were the effluent and the water surface at the discharge site checked regularly?
54 Confirm that all relevant valves in the ship's piping system were closed upon completion of discharge from the slop tanks.
- J)Collection, transfer and disposal of residues and oily mixtures not otherwise treated 55 Identity of tanks.
56 Quantity transferred or disposed of from each tank (indicate the quantity retained, in m3).
57 Method of transfer or disposal:
.1 at reception facilities (identify the port and indicate the quantity); .2 mixed with the cargo (indicate the quantity); .3 transfer to or from another tank or tanks, including transfers from oil residue (sludge) tanks and oily bilge water tanks from machinery spaces (identify the tanks and indicate the quantity transferred and the total content of the tanks, in m3); and .4 other method (specify); indicate the quantity disposed of, in m3.
- K)Discharge of clean ballast contained in cargo tanks 58 Position of the ship at the start of the discharge of clean ballast.
59 Identity of the tanks discharged.
60 Were the tanks emptied upon completion of the discharge?
61 Position of the ship upon completion of the discharge if different from that indicated in 58.
62 Were the effluent and the water surface at the discharge site regularly checked?
- L)Discharge of ballast from dedicated clean ballast tanks (applicable only to ships equipped with such tanks) 63 Identity of the tanks discharged.
64 Time and position of the ship at the start of the discharge of clean ballast into the sea.
65 Time and position of the ship upon completion of the discharge into the sea.
66 Quantity discharged:
.1 into the sea; or .2 into a reception facility (indicate the port).
67 Was any indication of contamination of the ballast water by hydrocarbons observed before or during the discharge into the sea?
68 Was the discharge monitored by an oil content meter?
69 Time and position of the ship when the valves separating the dedicated clean ballast tanks from the cargo and stripping lines were closed upon completion of deballasting.
- M)Condition of the oil discharge monitoring and control system 70 Time at which the system failed.
71 Time at which the system became operational again.
72 Reasons for the failure.
- N)Accidental or exceptional discharges of oil 73 Time of the event.
74 Place or position of the ship at the time of the event.
75 Approximate quantity, in m3, and type of oil.
76 Circumstances of the discharge or escape, reasons and general observations.
- O)Other operational procedures and general observations TANKERS ENGAGED IN SPECIFIC TRADES P) Ballasting of water 77 Identity of the tanks ballasted.
78 Position of the ship during ballasting.
79 Total quantity of ballast loaded, in m3.
80 Observations.
- Q)Re-allocation of ballast water on board 81 Reasons for re-allocation.
- R)Discharge of ballast water into a reception facility 82 Port(s) where ballast water was discharged.
83 Name or designation of the reception facility.
84 Total quantity of ballast water discharged; in m3.
85 Date, signature and stamp of the port authority official.
Name of ship Distinctive number or letters CARGO/BALLAST OPERATIONS (FOR OIL TANKERS) APPENDIX IV - MODEL OF EXEMPTION CERTIFICATE FOR THE UNSP BARGES INTERNATIONAL CERTIFICATE OF EXEMPTION FOR UNMANNED NON-SELF-PROPELLED (UNSP) BARGES FOR THE PREVENTION OF OIL POLLUTION Issued under the provisions of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the corresponding Protocol of 1978, as amended (hereinafter referred to as "the Convention"), under the authority of the Government of:
(full official name of the country) by (full name of the competent person or organization authorized under the provisions of the Convention) Particulars of the ship Name of ship Distinctive number or letters Port of registry Gross tonnage THIS IS TO CERTIFY:
1 that the UNSP barge has been surveyed in accordance with the provisions of regulation 3.7 of Annex I of the Convention; 2 that the survey has shown that the UNSP barge:
.1 lacks mechanical means of propulsion; .2 does not carry oil (as defined in regulation 1.1 of Annex I of the Convention); .3 has no machinery that may use oil or generate oil residues (sludge); .4 has no liquid fuel tanks, lubricating oil tanks, oily bilge water holding tanks, or oil residue (sludge) tanks; and .5 carries no persons or live animals on board; and 3 that the UNSP barge is exempt, under regulation 3.7 of Annex I of the Convention, from the survey and certification requirements of regulations 6.1 and 7.1 of Annex I of the Convention.
This certificate is valid until (dd/mm/yyyy) Provided that the conditions of exemption are maintained.
Date of completion of the survey on which this certificate is based (dd/mm/yyyy) . . . . . . . .
Issued at . .
(place of issue of the certificate) on (dd/mm/yyyy):
(date of issue) (signature of the duly authorized official issuing the certificate) (seal or stamp, as appropriate, of the issuing authority)