Annex 1

Question 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.

Answer 1

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.

Question 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.

Answer 2

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.

Question 3

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

Answer 3

• 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.

Question 4

List operations that should be recorded in the ORB 1.

Answer 4

• 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.

Question 5

State who should sign the ORB 1.

Answer 5

• The OOW in charge of the operation after completion.

- The Master should sign the bottom of every completed page.

Question 6

List Special Areas.

Answer 6

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

Question 7

List operations that should be recorded in the ORB 2.

Answer 7

• 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