Annex 2

Question 1

List the operational standards for the discharge of noxious liquid substances of categories X,Y or Z when the vessel is at sea.

Answer 1

Where the provisions of these regulations allow discharge into the sea the following standards shall apply;

Any water subsequently added to the tank may be discharged into the sea if;

• The ship is proceeding en route at a speed of at least 7 knots.
• The discharge is made below the waterline.
• The discharge is made at a distance of at least 12 NM from the nearest land.
• The depth of water must be at least 25m.

Question 2

State which record book is required to be kept by a vessel carrying noxious liquid substances in bulk.

Answer 2

Every ship which this Annex applies must carry a Cargo Record Book.

Question 3

List operations that must be recorded in this record book.

Answer 3

• Loading of any cargo
• Internal transfer of cargo
• Discharging of any cargo
• Cleaning of cargo tanks
• Ballasting of cargo tanks
• Discharge of ballast from cargo tanks
• Disposal of residues to shore reception facilities
• Discharge into the sea or removal by ventilation of residue