Regulation 5

ISSUE OF CERTIFICATE

1. An International Oil Pollution Certificate (1973) shall be

issued, after survey in accordance with the provisions of

Regulation 4 of this Annex, to any oil tanker of 150 tons

gross tonnage and above and any other ships of 400 tons gross

tonnage and above which are engaged in voyages to ports or

off-shore terminals under the jurisdiction of other Parties

to the Convention. In the case of existing ships this

requirement shall apply twelve months after the date of entry

into force of the present Convention.

2. Such Certificate shall be issued either by the

Administration or by any persons or organization duly

authorized by it. In every case the Administration assumes

full responsibility for the Certificate.

Regulation 6

ISSUE OF A CERTIFICATE BY ANOTHER GOVERNMENT

1. The Government of a Party to the 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 (1973) to

the ship in accordance with this Annex.

2. A copy of the Certificate and a copy of the survey report

shall be transmitted as soon as possible to the requesting

Administration.

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 force and receive the same recognition as the

Certificate issued under Regulation 5 of this Annex.

4. No International Oil Pollution Prevention Certificate

(1973) shall be issued to a ship which is entitled to fly the

flag of a State which is not a Party.

Regulation 7

FORM OF CERTIFICATE

The International Oil Pollution Prevention Certificate (1973)

shall be drawn up in an official language of the issuing

country in the form corresponding to the model given in

Appendix II to this Annex. If the language used is neither

English nor French, the text shall include a translation into

one of these languages.

Regulation 8

DURATION OF CERTIFICATE

1. An International Oil Pollution Prevention Certificate

(1973) shall be issued for a period specified by the

Administration, which shall not exceed five years from the

date of issue, except as provided in paragraphs (2), (3) and

(4) of this Regulation.

2. If a ship at the time when the Certificate expires is not

in a port or off-shore terminal under the jurisdiction of the

Party to the Convention whose flag the ship is entitled to

fly, the Certificate may be extended by the Administration,

but such extension shall be granted only for the purpose of

allowing the ship to complete its voyage to the State whose

flag the ship is entitled to fly or in which it is to be

surveyed and then only in cases where it appears proper and

reasonable to do so.

3. No Certificate shall be thus extended for a period longer

than five months and a ship to which such extension is

granted shall not on its arrival in the State whose flag it

is entitled to fly or the port in which it is to be surveyed,

be entitled by virtue of such extension to leave that port or

State without having obtained a new Certificate.

4. A Certificate which has not been extended under the

provisions of paragraph (2) 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.

5. A Certificate shall cease to be valid if significant

alterations have taken place in the construction, equipment,

fittings, arrangements, or material required without the

sanction of the Administration, except the direct replacement

of such equipment or fittings, or if intermediate surveys as

specified by the Administration under Regulation 4(1)(c) of

this Annex are not carried out.

6. A Certificate issued to a ship shall cease to be valid

upon transfer of such a ship to the flag of another State,

except as provided in paragraph (7) of this Regulation.

7. Upon transfer of a ship to the flag of another Party, the

Certificate shall remain in force for a period not exceeding

five months provided that it would not have expired before

the end of that period, or until the Administration issues a

replacement Certificate, whichever is earlier. As soon as

possible after the transfer has taken place the Government of

the Party whose flag the ship was formerly entitled to fly

shall transmit to the Administration a copy of the

Certificate carried by the ship before the transfer and, if

availbale, a copy of the relevant survey report.

Chapter II

REQUIREMENTS FOR CONTROL OF OPERATIONAL POLLUTION

Regulation 9

CONTROL OF DISCHARGE OF OIL

1. Subject to the provisions of Regulations 10 and 11 of this

Annex and paragraph (2) of this Regulation, any discharge

into the sea of oil or oily mixtures from ships to which this

Annex applies shall be prohibited except when all the

following conditions are satisfied:

a) for an oil tanker, except as provided for in subparagraph

(b) of this paragraph:

(i) the tanker is not within a special area;

(ii) the tanker is more than 50 nautical miles from the

nearest land;

(iii) the tanker is proceeding en route;

(iv) the instantaneous rate of discharge of oil content does

not exceed 60 litres per nautical mile;

(v) the total quantity of oil discharged into the sea does

not exceed for existing tankers 1/15,000 of the total

quantity of the particular cargo of which the residue formed

a part, and for new tankers 1/30,000 of the total quantity of

the particular cargo of which the residue formed a part; and

(vi) the tanker has in operation, except as provided for in

Regulation 15(3) of this Annex, an oil discharge monitoring

and control system and a slop tank arrangements as required

by Regulation 15 of this Annex;

b) from a ship of 400 tons gross tonnage and above other than

an oil tanker and from machinery space bilges excluding cargo

pump room bilges of an oil tanker unless mixed with oil cargo

residue:

(i) the ship is not within a special area;

(ii) the ship is more than 12 nautical miles from the nearest

land;

(iii) the ship is proceeding en route;

(iv) the oil content of the effluent is less than 100 parts

per million; and

(v) the ship has in operation an oil discharge monitoring and

control system, oily-water separating equipment, oil

filtering system or other installation as required by

Regulation 16 of this Annex.

2. In the case of a ship of less than 400 tons gross tonnage

other than oil tanker whilst outside the special area, the

Administration shall ensure that it is equipped as far as

practicable and reasonable with installations to ensure the

storage of oil residues on board and their discharge to

reception facilities or into the sea in compliance with the

requirements of paragraph (1) (b) of this Regulation.

3. 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, Governments of Parties to the Convention should,

to the extent they are reasonably able to do so, promptly

investigate the facts bearing on the issue of whether there

has been a violation of the provisions of this Regulation or

Regulation 10 of this Annex. The investigation should

include, in particular, the wind and sea conditions, the

track and speed of the ship, other possible sources of

visible traces in the vicinity, and any relevant oil

discharge records.

4. The provisions of paragraph (1) of this Regulation shall

not apply to the discharge of clean or segregated ballast.

The provisions of subparagraph (1)(b) of this Regulation

shall not apply to the discharge of oily mixture which

without dilution has an oil content not exceeding 15 parts

per million.

5. No discharge into the sea shall contain chemicals or other

substances in quantities or concentrations which are

hazardous to the marine environment or chemicals or other

substances introduced for the purpose of circumventing the

conditions of discharge specified in this Regulation.

6. The oil residues which cannot be discharged into the sea

in compliance with paragraphs (1), (2) and (4) of this

Regulation shall be retained on board or discharged to

reception facilities.

Regulation 10

METHODS FOR THE PREVENTION OF OIL POLLUTION FROM SHIPS WHILE

OPERATING IN SPECIAL AREAS

1. For the purposes of this Annex the special areas are the

Mediterranean Sea area, the Baltic Sea area, the Black Sea

area and the "Gulfs area" which are defined as follows:

a) 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 constituted by

the 41 deg N parallel and bounded to the west by the Straits

of Gibraltar at the meridian of 5 deg 36 min W.

b) 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 the Skaw in the

Skagerrak at 57 deg 44.8 min N.

c) The Black Sea area means the Black Sea proper with the

boundary between the Mediterranean and the Black Sea

constituted by the parallel 41 deg N.

d) The Red Sea area means the Red Sea proper including the

Gulfs of Suez and Aqaba bounded at the South by the rhumb

line between Ras si Ane (12 deg 8.5 min N, 43 deg 19.6 min E)

and Husn Murad (12 deg 40.4 min N, 43 deg 30.2 min E).

e) The Gulfs area means the sea area located north west of

the rhumb line between Ras al Hadd (22 deg 30 min N, 59 deg

48 min E) and RAs Al Fasteh (25 deg 04 min N, 61 deg 25 min

E).

2. a) Subject to the provisions of Regulation 11 of this

Annex, any discharge into the sea of oil or oily mixture from

any oil tanker and any ship or 400 tons gross tonnage and

above other than an oil tanker shall be prohibited, while in

a special area.

b) Such ships while in a special area shall retain on board

all oil drainage and sludge, dirty ballast and tank washing

waters and discharge them only to reception facilities.

3. a) Subject to the provisions of Regulation 11 of this

Annex, any discharge into the sea of oil or mixture from a

ship of less than 400 tons gross tonnage, other than oil

tanker, shall be prohibited while in a special area, except

when the oil content of the effluent without dilution does

not exceed 15 parts per million or alternatively when all of

the following conditions are satisfied:

(i) the ship is proceeding en route;

(ii) the oil content of the effluent is less than 100 parts

per million; and

(iii) the discharge is made as far as practicable from the

land, but in no case less than 12 nautical miles from the

nearest land.

b) No discharge into the sea shall contain chemicals or other

substances in quantities or concentrations which are

hazardous to the marine environment or chemicals or other

substances introduced for the purpose of circumventing the

conditions of discharge specified in this Regulation.

c) The oil residues which cannot be discharged into the sea

in compliance with sub-paragraph (a) of this paragraph shall

be retained on board or discharged to reception facilities.

4. The provisions 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

discharging outside the special area in accordance with

Regulation 9 of this Annex.

6. 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 Parties to the Convention

should, to the extent they are reasonably able to do so,

promptly investigate the facts bearing on the issue of

whether there has been a violation of the provisions of this

Regulation or Regulation 9 of this Annex. The investigation

should 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 oil

discharge records.

7. Reception facilities within special areas:

a) Mediterranean Sea, Black Sea and Baltic Sea areas:

(i) The Government of each Party to the Convention, the

coastline of which borders on any given special area

undertakes to ensure that not later than 1 January 1977 all

oil loading terminals and repair ports within the special

area are provided with facilities adequate for the reception

and treatment of all the dirty ballast and tank washing water

from oil tankers. In addition all ports within the special

area shall be provided with adequate reception facilities for

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.

(ii) The Government of each Party having under its

jurisdiction entrances to seawater courses with low depth

contour which might require a reduction of draught by the

discharge of ballast undertakes to ensure the provision of

the facilities referred to in sub-paragraph (a)(i) of this

paragraph but with the proviso that ships required to

discharge slops or dirty ballast could be subject to some

delay.

(iii) During the period between the entry into force of the

present Convention (if earlier than 1 January 1977) and, 1

January 1977 ships while navigating in the special areas

shall comply with the requirements of Regulation 9 of this

Annex. However, the Governments of Parties the coastlines of

which border any of the special areas under this sub-

paragraph may establish a date earlier than 1 January 1977,

but after the date of entry into force of the present

Convention, from which the requirements of this Regulation in

respect of the special areas in question shall take effect:

(1) if all the reception facilities required have been

provided by the date so established, and

(2) provided that the Parties concerned notify the

Organization of the date so established at least six months

in advance, for circulation to other Parties.

(iv) After 1 January 1977, or the date established in

accordance with sub-paragraph (a)(iii) of this paragraph if

earlier, each Party shall notify the Organization for

transmission to the Contracting Governments concerned of all

cases where the facilities are alleged to be inadequate.

b) Red Sea area and Gulfs area:

(i) The Government of each Party the coastline of which

borders on the special areas undertakes to ensure that as

soon as possible all oil loading terminals and repair ports

within these special areas are provided with facilities

adequate for the reception and treatment of all the dirty

ballast and tank washing water from tankers. In addition all

ports within the special area shall be provided with adequate

reception facilities for 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.

(ii) The Government of each Party having under its

jurisdiction entrances to seawater courses with low depth

contour which might require a reduction of draught by the

discharge of ballast in sub-paragraphs (a)(i) of this

paragraph but with the proviso that ships required to

discharge slops or dirty ballast could be subject to some

delay.

(iii) Each Party concerned shall notify the Organization of

the measures taken pursuant to provisions of sub-paragraph

(b)(i) and (ii) of this paragraph. Upon receipt of sufficient

notifications the Organization shall establish a date from

which the requirements of this Regulation in respect of the

area in question shall take effect. The Organization shall

notify all Parties of the date so established no less than

twelve months in advance of that date.

(iv) During the period between the entry into force of the

present Convention and the date so established, ships while

navigating in the special area shall comply with the

requirements of Regulation 9 of this Annex.

(v) 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 this

Regulation. However, oil tankers entering these special areas

for the purpose of loading shall make every effort to enter

the area with only clean ballast on board.

(vi) 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.

(vii) At least the reception facilities as prescribed in

Regulation 12 of this Annex shall be provided by 1 January

1977 or one year after the date of entry into force of the

present Convention whichever occurs later.

Regulation 11

EXCEPTIONS

Regulations 9 and 10 of this Annex shall not apply to:

a) the discharge into the sea of oil or oily mixture

necessary for the purpose of securing the safety of a ship or

saving life at sea; or

b) the discharge into the sea of oil or oily mixture

resulting from damage to a ship or its equipment:

(i) 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 the

discharge; and

(ii) 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

c) the discharge into the sea of substances containing oil,

approved by the Administration, when being used for the

purpose of combating specific pollution incidents in order to

minimize the damage from pollution. Any such discharge shall

be subject to the approval of any Government in whose

jurisdiction it is contemplated the discharge will occur.

Regulation 12

RECEPTION FACILITIES

1. Subject to the provisions of Regulation 10 of this Annex,

the Government of each Party undertakes to ensure the

provision at oil loading terminals, repair ports, and in

other ports in which ships have oily residues to discharge,

of facilities for the reception of such residues and oily

mixtures as remain from oil tankers and other ships adequate

to meet the needs of the ships using them without causing

undue delay to ships.

2. Reception facilities in accordance with paragraph (1) of

this Regulation shall be provided in:

a) all ports and terminals in which crude oil is loaded into

oil tankers where such tankers have immediately prior to

arrival completed a ballast voyage of not more than 72 hours

or not more than 1,200 nautical miles;

b) all ports and terminals in which oil other than crude oil

in bulk is loaded at an average quantity of more than 1,000

metric tons per day;

c) all ports having ship repair yards or tank cleaning

facilities;

d) all ports and terminals which handle ships provided with

the sludge tank(s) required by Regulation 17 of this Annex:

e) all ports in respect of oily bilge waters and other

residues, which cannot be discharged in accordance with

Regulation 9 of this Annex; and

f) all loading ports for bulk cargoes in respect of oil

residues from combination carriers which cannot be discharged

in accordance with Regulation 9 of this Annex.

3. The capacity for the reception facilities shall be as

follows:

a) Crude oil loading terminals shall have sufficient

reception facilities to receive oil and oily mixtures which

cannot be discharged in accordance with the provisions of

Regulation 9(1)(a) of this Annex from all oil tankers on

voyages as described in paragraph (2) (a) of this Regulation.

b) Loading ports and terminals referred to in paragraph

(2)(b) of this Regulation shall have sufficient reception

facilities to receive oil and oily mixtures which cannot be

discharged in accordance with the provisions of Regulation

9(1) (a) of this Annex from oil tankers which load oil other

than crude oil in bulk.

c) All ports having ship repair yards or tank cleaning

facilities shall have sufficient reception facilities to

receive all residues and oily mixtures which remain on board

for disposal from ships prior to entering such yards or

facilities.

d) All facilities provided in ports and terminals under

paragraph (2)(d) of this Regulation shall be sufficient to

receive all residues retained according to Regulation 17 of

this Annex from all ships that may reasonably be expected to

call at such ports and terminals.

e) All facilities provided in ports and terminals under this

Regulation shall be sufficient to receive oily bilge waters

and other residues which cannot be discharged in accordance

with Regulation 9 of this Annex.

f) The facilities provided in loading ports for bulk cargoes

shall take into account the special problems of combination

carriers as appropriate.

4. The reception facilities prescribed in paragraphs (2) and

(3) of this Regulation shall be made available no later than

one year from the date of entry into force of the present

Convention or by 1 January 1977, whichever occurs later.

5. Each Party shall notify the Organization for transmission

to the Parties concerned of all cases where the facilities

provided under this Regulation are alleged to be inadequate.

Regulation 13

SEGREGATED BALLAST OIL TANKERS

1. Every new oil tanker of 70,000 tons deadweight and above

shall be provided with segregated ballast tanks and shall

comply with the requirements of this Regulation.

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 oil tanks for water

ballast except as provided for in paragraph (3) of this

Regulation. In all cases, however, the capacity of segregated

ballast tanks shall be at least such that in any ballast

condition at any part of the voyage, including the conditions

consisting of lightweight plus segregated ballast only, the

ship's draughts and trim can meet each of the following

requirements:

a) the moulded draught amidships (dm) in metres (without

taking into account any ship's deformation) shall not be les

than:

dm = 2.0 + 0.02L;

b) the draughts at the forward and after perpendiculars shall

correspond to those determined by the draught amidships (dm),

as specified in sub-paragraph (a) of this paragraph, in

association with the trim by the stern of not greater than

0.015L; and

c) in any case the draught at the after perpendicular shall

not be less than that which is necessary to obtain full

immersion of the propeller(s).

3. In no case shall ballast water be carried in oil tanks

except in weather conditions so severe that, in the opinion

of the Master, it is necessary to carry additional ballast

water in oil tanks for the safety of the ship. Such

additional ballast water shall be processed and discharged in

compliance with Regulation 9 and in accordance with the

requirements of Regulation 15 of this Annex, and entry shall

be made in the Oil Record Book referred to in Regulation 20

of this Annex.

4. Any oil tanker which is not required to be provided with

segregated ballast tanks in accordance with paragraph (1) of

this Regulation may, however, be qualified as a segregated

ballast tanker, provided that in the case of an oil tanker of

150 metres in length and above it fully complies with the

requirements of paragraphs (2) and (3) of this Regulation and

in the case of an oil tanker of less than 150 metres in

length the segregated ballast conditions shall be to the

satisfaction of the Administration.

Regulation 14

SEGREGATION OF OIL AND WATER BALLAST

1. Except as provided in paragraph (2) of this Regulation, in

new ships of 4,000 tons gross tonnage and above other than

oil tankers, and in new oil tankers of 150 tons gross tonnage

and above, no ballast water shall be carried in any oil fuel

tank.

2. Where abnormal conditions or the need to carry large

quantities of oil fuel render it necessary to carry ballast

water which is not a clean ballast in any oil fuel tank, such

ballast water shall be discharged to reception facilities or

into the sea in compliance with Regulation 9 using the

equipment specified in Regulation 16 (2) of this Annex, and

an entry shall be made in the Oil Record Book to this effect.

3. All other ships shall comply with the requirements of

paragraph (1) of this Regulation as far as reasonable and

practicable.

Regulation 15

RETENTION OF OIL ON BOARD

1. Subject to the provisions of paragraphs (5) and (6) of

this Regulation, oil tankers of 150 tons gross tonnage and

above shall be provided with arrangements in accordance with

the requirements of paragraphs (2) and (3) of this

Regulation, provided that in the case of existing tankers the

requirements for oil discharge monitoring and control systems

and slop tank arrangements shall apply three years after the

date of entry into force of the present Convention.

2. a) 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. In existing oil tankers, any cargo tank

may be designated as a slop tank.

b) 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 9 of

this Annex.

c) The arrangements of the slop tank or combination of slop

tanks shall have a capacity necessary to retain the slops

generated by tank washing, oil residues and dirty ballast

residues but the total shall be not less than 3 per cent of

the oil carrying capacity of the ship, except that, where

segregated ballast tanks are provided in accordance with

Regulation 13 of this Annex, or where arrangements such as

educators involving the use of water additional to the washing

water are not fitted, the Administration may accept 2 per

cent. New oil tankers over 70,000 tons deadweight shall be

provided with at least two slop tanks.

d) Slop tanks shall be designed particularly in respect of

the position of inlets, outlets, baffles or where fitted, so

as to avoid excessive turbulence and entrainment of oil or

emulsion with the water.

3. a) An oil discharge monitoring and control system approved

by the Administration shall be fitted. In considering the

design of the oil content meter to be incorporated in the

system, the Administration shall have regard to the

specification recommended by the Organization.*

* Reference is made to "Clean Seas Guide for Oil Tankers",

published by the International Chamber of Shipping and the

Oil Companies International Marine Forum.

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 monitor 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 mixture is automatically stopped when the instantaneous

rate of discharge of oil exceeds that permitted by Regulation

9(1)(a) of this Annex. Any failure of this monitoring and

control system shall stop the discharge and be noted in the

Oil Record Book. A manually operated alternative method shall

be provided and may be used in the event of such failure, but

the defective unit shall be made operable before the oil

tanker commences its next ballast voyage unless it is

proceeding to a repair port. Existing oil tankers shall

comply with all of the provisions specified above except that

the stopping of the discharge may be performed manually and

the rate of discharge may be estimated from the pump

characteristic.

b) Effective oil/water interface detectors approved by the

Administration shall be provided for a rapid and accurate

determination of the oil/water interface in slop tanks and

shall be available for use in other tanks where the

separation of oil and water is effected and from which it is

intended to discharge effluent direct to the sea.

c) Instructions as to the operation of system shall be in

accordance with an operational manual approved by the

Administration. They shall cover manual as well as automatic

operations and shall be intended to ensure that at no time

shall oil be discharged except in compliance with the

conditions specified in Regulation 9 of this Annex.*

* Reference is made to the Recommendation on International

Performance Specifications for Oily-Water Separating

Equipment and Oil Content Meters adopted by the Organization

by Resolution A.233 (VII).

4. The requirements of paragraphs (1), (2) and (3 ) of this

Regulation shall not apply to oil tankers of less than 150

tons gross tonnage, for which the control of discharge of oil

under Regulation 9 of this Annex shall be effected by the

retention of oil on board with subsequent discharge of all

contaminated washings to reception facilities. The total

quantity of oil and water used for washing and returned to a

storage tank shall be recorded in the Oil Record Book. This

total quantity shall be discharged to reception facilities

unless adequate arrangements are made to ensure that any

effluent which is allowed to be discharged into the sea is

effectively monitored to ensure that the provision of

Regulation 9 of this Annex are complied with.

5. The Administration may waive the requirements of

paragraphs (1), (2) and (3) of this Regulation for any oil

tanker which engages exclusively on voyages both of 72 hours

or less in duration and within 50 miles from the nearest

land, provided that the oil tanker is not required to hold

and does not hold an International Oil Pollution Prevention

Certificate (1973). Any such waiver shall be subject to the

requirements 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 facilities available to receive such oily mixtures are

adequate.

6. Where in the view of the Organization equipment required

by Regulation 9(1)(a)(vi) of this Annex and specified in sub-

paragraph (3)(a) of this Regulation is not obtainable for the

monitoring of discharge of light refined products (white

oils), the Administration may waive compliance with such

procedures established by the Organization which shall

satisfy the conditions of Regulation 9(1)(a) of this Annex

except the obligation to have an oil discharge monitoring and

control system in operation. The Organization shall review

the availability of equipment at intervals not exceeding

twelve months.

7. The requirements of paragraphs (1), (2) and (3) of this

Regulation shall not apply to oil tankers carrying asphalt,

for which the control of discharge of asphalt under

Regulation 9 of this Annex shall be effected by the retention

of asphalt residues on board with discharge of all

contaminated washings to reception facilities.

Regulation 16

OIL DISCHARGE MONITORING AND CONTROL SYSTEM AND OILY-WATER

SEPARATING EQUIPMENT

1. Any ship of 400 tons gross tonnage and above shall be

fitted with an oily-water separating equipment or filtering

system complying with the provisions of paragraph (6) of this

Regulation. Any such ship which carries large quantities of

oil fuel shall comply with paragraph 2 of this Regulation or

paragraph (1) of Regulation 14.

2. Any ship of 10,000 tons gross tonnage and above shall be

fitted:

a) in addition to the requirements of paragraph (1) of this

Regulation with an oil discharge monitoring and control

system complying with paragraph (5) of this Regulation; or

b) as an alternative to the requirements of paragraph (1) and

sub-paragraph (2)(a) of this Regulation, with an oily-water

separating equipment complying with paragraph (6) of this

Regulation and an effective filtering system, complying with

paragraph (7) of this Regulation.

3. The Administration shall ensure that ships of less 400

tons gross tonnage are equipped, as far as practicable, to

retain on board oil or oily mixtures or discharge them in

accordance with the requirements of Regulation 9(1)(b) of

this Annex.

4. For existing ships the requirements of paragraphs (1),(2)

and (3) of this Regulation shall apply three years after the

date of entry into force of the present Convention.

5. An oil discharge monitoring and control system shall be of

a design approved by the Administration. 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 oil content in parts per million.

This record shall be identifiable as to time and date and

shall be kept for at least three years. The 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 mixture is automatically

stopped when the oil content of effluent exceeds that

permitted by Regulation 9(1)(b) of this Annex. Any failure of

this monitoring and control system shall stop the discharge

and be noted in the Oil Record Book. The defective unit shall

be made operable before the ship commences its next voyage

unless it is proceeding to a repair port. Existing ships

shall comply with all of the provisions specified above

except that the stopping of the discharge may be performed

manually.

6. Only-water separating equipment or an oil filtering system

shall be of a design approved by the Administration and shall

be such as will ensure that any oily mixture discharged into

the sea after passing through the separator or filtering

systems shall have an oil content of not more than 100 parts

per million. In considering the design of such equipment, the

Administration shall have regard to the specification

recommended by the Organization.*

7. The oil filtering system referred to in paragraph (2)(b)

of this Regulation shall be of a design approved by the

Administration and shall be such that it will accept the

discharge from the separating system and produce an effluent

the oil content of which does not exceed 15 parts per

million. It shall be provided with alarm arrangements to

indicate when this level cannot be maintained.

Regulation 17

TANKS FOR OIL RESIDUES (SLUDGE)

1. Every ship of 400 tons gross tonnage and above shall be

provided with a tank or tanks of adequate capacity, having

regard to the type of machinery and length of voyage, to

receive the oily residues (sludges) which cannot be dealt

with otherwise in accordance with the requirements of this

Annex, such as those resulting from the purification of fuel

and lubricating oils and oil leakages in the machinery

spaces.

2. In new ships, such tanks shall be designed and constructed

so as to facilitate their cleaning and the discharge of

residues to reception facilities. Existing ships shall comply

with this requirement as far as is reasonable and

practicable.

Regulation 18

PUMPING, PIPING AND DISCHARGE ARRANGEMENTS OF OIL TANKERS

1. In every oil tanker, a discharge manifold for connexion 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, pipelines for the discharge to the

sea of effluent which may be permitted under Regulation 9 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 sub-paragraphs (4)(a) and (b) of this

Regulation may be accepted.

3. In new oil tankers means shall be provided for stopping

the discharge of effluent into the sea from a position on

upper deck or above located so that the manifold in use

referred to in paragraph (1) of this Regulation and the

effluent 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 communication system such as telephone

or radio system is provided between the observation position

and the discharge control position.

4. All discharges shall take place above the waterline except

as follows:

a) Segregated ballast and clean ballast may be discharged

below the waterline in ports or at offshore terminals.

b) Existing ships which, without modification, are not

capable of discharging segregated ballast above the waterline

may discharge segregated ballast below the waterline provided

that an examination of the tank immediately before the

discharge has established that no contamination with oil has

taken place.

Regulation 19

STANDARD DISCHARGE CONNECTION

To enable pipes of reception facilities to be connected with

the ship's discharge pipeline for residues from machinery

bilges, both lines shall be fitted with a standard discharge

connection in accordance with the following table:

Standard Dimensions of Flanges for Discharge

Connections

Description Dimension

Outside diameter 215 mm

Inner diameter According to 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. The slot

width to be 22 mm

Flange thickness 20 mm

Bolts and nuts: 6, each of 20 mm in

quantity, diameter 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. This flange, together

with a gasket of oilproof material, shall be suitable for a

service pressure of 6 kg/cm1.

Regulation 20

OIL RECORD BOOK

1. Every oil tanker of 150 tons gross tonnage and above and

every ship of 400 tons gross tonnage and above other than oil

tanker shall be provided with an Oil Record Book, whether as

part of the ship's official log book or otherwise, in the

form specified in Appendix III to this Annex.

2. The Oil Record Book shall be completed on each occasion,

on a tank-to-tank basis, whenever any of the following

operations take place in the ship:

a) For oil tankers

(i) loading of oil cargo;

(ii) internal transfer of oil cargo during voyage;

(iii) opening or closing before and after loading and

unloading operations of valves or similar devices which

inter-connect cargo tanks;

(iv) opening or closing of means of communication between

cargo piping and seawater ballast piping;

(v) opening or closing of ship's side valves before, during

and after loading and unloading operations;

(vi) unloading of oil cargo;

(vii) ballasting of cargo tanks;

(viii) cleaning of cargo tanks;

(ix) discharge of ballast except from segregated ballast

tanks;

(x) discharge of water from slop tanks;

(xi) disposal of residues;

(xii) discharge overboard of bilge water which has

accumulated in machinery spaces whilst in port and the

routine discharge at sea of bilge water which has accumulated

in machinery spaces.

b) For ships other than oil tankers

(i) ballasting or cleaning of fuel oil tanks or oil cargo

spaces;

(ii) discharge of ballast or cleaning water from tanks

referred to under (i) of this sub-paragraph;

(iii) disposal of residues;

(iv) discharge overboard of bilge water which has accumulated

in machinery spaces whilst in port, and the routine discharge

at sea of bilge water which has accumulated in machinery

spaces.

3. In the event of such discharge of oil or oily mixture as

is referred to in Regulation 11 of this

Annex or in the event of accidental or other exceptional

discharge of oil not expected by that Regulation, a statement

shall be made in the Oil Record Book of the circumstances of,

and the reasons for the discharge.

4. Each operation described in paragraph (2) of this

Regulation shall be fully recorded without delay in the Oil

Record Book so that all the entries in the book appropriate

to that operation are completed. Each section of the book

shall be signed by the officer or officers in charge of the

operations concerned and shall be countersigned by the Master

of the ship. The entries in the Oil Record Book shall be in

an official language of the State whose flag the ship is

entitled to fly, and, for ships holding an International Oil

Pollution Prevention Certificate (1973), in English or

French. The entries in an official national language of the

State whose flag the ship is entitled to fly shall prevail in

case of a dispute or discrepancy.

5. The Oil Record Book 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.

6. The competent authority of the Government of a party to

the Convention may inspect the Oil Record Book on board any

ship to which this Annex applies while the ship is in its

port or offshore terminals and may take 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 shall

be made admissible in any judicial proceedings as evidence of

the facts stated in the entry. The inspection of an Oil

Record Book and the taking of a certified copy of the

competent authority under this paragraph shall be performed

as expeditiously as possible without causing the ship to be

unduly delayed.

Regulation 21

SPECIAL REQUIREMENTS FOR DRILLING RIGS AND OTHER PLATFORMS

Fixed and floating drilling rigs when engaged in the

exploration, exploitation and associated offshore processing

of sea-bed mineral resources and other platforms shall comply

with the requirements of this Annex applicable to ships of

400 tons gross tonnage and above other than oil tankers,

except that:

a) they shall be equipped as far as practicable with the

installations required in Regulations 16 and 17 of this

Annex;

b) they shall keep a record of all operations involving oil

or oily mixture discharges, in a form approved by the

Administration; and

c) in any special area and subject to the provisions of

Regulation 11 of this Annex, the discharge into the sea of

oil or oily mixture shall be prohibited except when the oil

content of the discharge without dilution does not exceed 15

parts per million.

Chapter III

REQUIREMENTS FOR MINIMIZING OIL POLLUTION FROM OIL TANKERS

DUE TO SIDE AND BOTTOM DAMAGES

Regulation 22

DAMAGE ASSUMPTIONS

1. For the purpose of calculating hypothetical oil outflow

from oil tankers, three dimensions of the extent of damage of

a parallelepiped on the side and bottom of the ship are

assumed as follows. In the case of bottom damages two

conditions are set forth to be applied individually to the

stated portions of the oil tanker.

a) Side damage

(i) Longitudinal 1/3 L 2/3 or 14.5 metres,

extent (lc); whichever is less

(ii) Transverse B/5 or 11.5 metres,

extent (lc): whichever is less

(inboard from the

ship's side at right

angles to the

centre-line at the

level corresponding to the assigned

summer freeboard)

(iii) Vertical from the base line

extent (vc): upwards without limit

b) Bottom damage

For 0.3L from Any other part

the forward of the ship

perpendicular

of the ship

(i) Long- L/10 L/10 or 5 metres,

itudinal whichever is less

extent (ls)

(ii) Trans- B/6 or 10 metres, 5 metres

verse whichever is less but not less

extent than 5 metres

(ts)

(iii) Vertical B or 6 metres,

extent

from the whichever is less

base

line (vs):

2. Whenever the symbols given in this Regulation

appear in this Chapter, they have the meaning as

defined in this Regulation.

Regulation 23

HYPOTHETICAL OUTFLOW OF OIL

1. The hypothetical outflow of oil in the case of side damage

(Oc) and bottom damage (Os) shall be calculated by the

following formulae with respect to compartments breached by

damage to all conceivable locations along the length of the

ship to the extent as defined in Regulation 22 of this Annex.

a) for side damages:

Oc = sigmaW1 + sigmaK1C1 (I)

b) for bottom damages:

Os = 1/3(sigmaZ1W1 + sigmaZ1C1) (II)

where:

Wi = volume of a wing tank in cubic metres assumed to be

breached by the damage as specified in Regulation 22 of

this Annex; Wi for a segregated ballast tank may be

taken equal to zero.

Ci = volume of a centre tank in cubic metres assumed to be

breached by the damage as specified in Regulation 22 of

this Annex; Ci for a segregated ballast tank may be

taken equal to zero.

Ki = 1 - bi/tc when bi is equal to or greater than

tc, Ki shall be taken equal to zero,

Zi = 1 - hi/vs when hi is equal to or greater than vs, Zi

shall be taken equal to zero,

bi= width of wing tank in metres 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 of the double bottom in metres under

consideration; where no double bottom is fitted hi shall

be taken to be equal to zero.

Whenever symbols given in this paragraph appear in the

Chapter, they have the meaning as defined in this Regulation.

2. If a void space or segregated ballast tank of a length

less than lc as defined in Regulation 22 of

this Annex is located between wing oil tanks, Oc in formula

(1) may be calculated on the basis of volume Wi being the

actual volume of one such tank (where they are of equal

capacity) or the smaller of the two tanks (if they differ in

capacity) adjacent to such space, multiplied by Si as defined

below and taking for all other wing tanks involved in such a

collision the value of the actual full volume.

Si = 1 - li/lc

where li = length in metres of void space or segregated

ballast tank under consideration.

3. a) Credit shall only be given in respect of double bottom

tanks which are either empty or carrying clean water when

cargo is carried in the tanks above.

b) Where the double bottom does not extent for the full

length and width of the tank involved, the double bottom is

considered non-existent and the volume of the tanks above the

area of the bottom damage shall be included in formula (II)

even if the tank is not considered breached because of the

installation of such a partial double bottom.

c) 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 wells if installed within the double

bottom shall be fitted with valves or other closing

arrangements located at the point of connextion 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 possible. These valves shall be kept closed

at sea at any time when the tank contains oil cargo, except

that they may be opened only for cargo transfer needed for

the purpose of trimming of the ship.

4. In the case where bottom damage simultaneously involves

four centre tanks, the value of Os may be calculated

according to the formula

Os = 1/4(sigmaZiWi + sigmaZiCi) (III)

5. An Administration may credit as reducing oil outflow in

case of bottom damage, an installed cargo transfer system

having an emergency high suction in each cargo oil tank,

capable of transferring from a breached tank or tanks to

segregated ballast tanks or to available cargo tankage if it

can be assured that such tanks will have sufficient ullage.

Credit for such a system would be governed by ability to

transfer in two hours of operation oil equal to one half of

the largest of the breached tanks involved and by

availability of equivalent receiving capacity in ballast or

cargo tanks. The credit shall be confined to permitting

calculation of Os according to formula (III). The pipes for

such suctions shall be installed at least at a height not

less than the vertical extent of the bottom damage vs. The

Administration shall supply the Organization with the

information concerning the arrangements accepted by it, for

circulation to other Parties to the Convention.

Regulation 24

LIMITATION OF SIZE AND ARRANGEMENT OF CARGO TANKS

1. Every new oil tanker shall comply with the provision of

this Regulation. Every existing oil tanker shall be required,

within two years after the date of entry into force of the

present Convention, to comply with the provisions of this Regulation if such a

tanker falls into either of the following categories:

a) a tanker, the delivery of which is after 1 January 1977;

or

b) a tanker to which both the following conditions apply:

(i) delivery is not later than 1 January 1977; and

(ii) the building contract is placed after 1 January 1974, or

in cases where no building contract has previously been

placed, the keel is laid or the tanker is at a similar stage

of construction after 30 January 1974.

2. Cargo tanks of oil tankers shall be of such size and

arrangements that the hypothetical outflow Oc or Os

calculated in accordance with the provisions of Regulation 23

of this Annex anywhere in the length of the ship does not

exceed 30,000 cubic metres or 400 x cube root of DW,

whichever is the greater, but subject to a maximum of 40,000

cubic metres.

3. The volume of any one wing cargo oil tank of an oil tanker

shall not exceed seventy-five per cent of the limits of the

hypothetical oil outflow referred to in paragraph (2) of this

Regulation. The volume of any one centre cargo oil tank shall

not exceed 50,000 cubic metres. However, in segregated

ballast oil tankers as defined in Regulation 13 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 tanks exceeds

tc.

4. The length of each cargo tank shall not exceed 10 metres

or one of the following values, whichever is the greater:

a) where no longitudinal bulkhead is provided:

0.1L

b) where a longitudinal bulkhead is provided at the

centreline only:

0.15L

c) where two or more longitudinal bulkheads are provided:

(i) for wing tanks:

0.2L

(ii) for centre tanks:

(1) if bi Ñ B is equal to or greater than 1/5:

0.2L B

(2) if bi/B is less than 1/5:

Ñ where no centreline longitudinal bulkhead is

provided:

(0.5 bi/B + 0.1)L

Ñwhere a centreline longitudinal bulkhead is provided:

(0.25 bi/B + 0.15)L

5. In order not to exceed the volume limits established by

paragraphs (2), (3) and (4) of this Regulation and

irrespective of the accepted type of cargo transfer system

installed, when such a system inter-connects two or more

cargo tanks, valves or

other similar closing devices shall be provided for

separating the tanks from each other. These valves or devices

shall be closed when the tanker is at sea.

6. Lines of piping which run through cargo tanks

in a position less than tc from the ship's side or less than

vc from the ship's bottom shall be fitted with valves or

similar closing devices at the point at which they open into

any cargo tank. These valves shall be kept closed at sea at

any time when the tanks contain cargo oil, except that they

may be opened only for cargo transfer needed for the purpose

of trimming of the ship.