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1

List the discharge criteria that must be complied with when a ship more than 400 GT is to discharge machinery space bilge inside a special area.

Any discharge of oil or oily mixtures into the sea from ships 400 GT and above is prohibited except when all the following conditions are met:

- The ship is proceeding en route.
- The oily water mixture is processed through oil filtering equipment.
- The oil content of the effluent does not exceed 15 ppm.
- The oily mixture does not originate from cargo pump room bilges on an oil tanker.
- The oily mixture is not mixed with oil cargo residues.
- In the Antarctic any discharge of oil into the sea is prohibited.

2

Lis the discharge criteria that must be complied with when an oil tanker more than 400 GT is to discharge cargo pump room bilges.

Any discharge into the sea of oil or oily mixtures from the cargo area of an oil tanker is prohibited except when the following conditions are satisfied.

- The tanker is not in a special area.
- The tanker is more than 50 NM from the nearest land.
- The ship must be proceeding en route.
- The instantaneous rate of discharge of oil does not exceed 30 litres per nautical mile.
- The total quantity of oil discharge does not exceed 1/15000 of the particular cargo (for tankers delivered before 31st December 1979).
- For tankers delivered after the 31st December 1979, the total quantity discharged shall not exceed 1/30,000 of the total quantity.
- The tanker must have an operational ODMC system.

3

State the name and part of the document in which EACH of the above operations should be recorded.

- Discharge of Machinery space bilge water to be logged down in Oil Record Book Part 1.
- Discharge of Oil or oily mixture from the cargo area to be logged down in Oil Record Book Part 2.

4

List operations that should be recorded in the ORB 1.

- Ballasting or cleaning of fuel oil tanks.
- Discharge of dirty ballast or cleaning water from fuel oil tanks.
- Discharge overboard or disposal of bilge water from machinery spaces.
- Any bunkering operation involving fuel oil or bulk lubricating oil.
- Transfer on board of fuel oil or lubricating oil.
- Any accidental or exceptional discharge of oil or oily mixture.
- Any failure of the oil filtering equipment.

5

State who should sign the ORB 1.

- The OOW in charge of the operation after completion.
- The Master should sign the bottom of every completed page.

6

List Special Areas.

- Mediterranean Sea
- Baltic Sea
- Black Sea
- Red Sea
- Gulf Area
- Gulf of Aden
- Oman area of Arabian Sea
- North West European Waters
- Antarctic

7

List operations that should be recorded in the ORB 2.

- Loading an oil cargo
- Internal Transfer of oil cargo
- Discharge of an oil cargo
- Ballasting of cargo tanks
- Ballasting of dedicated ballast tanks
- Cleaning of cargo tanks including COW
- Discharge of ballast except from segregated ballast tanks
- Discharge of water from slop tanks
- Closing of all valves after discharge from slop tanks
- Closing of all valves necessary for the isolation of dedicated clean ballast tanks.
- Disposal of residues
- The total quantity of oil and water used for washing and returned to a storage tank
- Any accidental or exceptional discharge of oil
- Any failure of the ODMC equipment