Oil Record book
All cargo vessels where MARPOL Convention is applicable must have an oil record book in which the officer responsible will record all oil or sludge transfers and discharges within the vessel. This is necessary for authorities to be able to monitor if a vessel’s crew has properly disposed of their oil discharges at sea.
REQUIREMENT
Each oil tanker of 150 gross tons and above, ship of 400 gross tons and above other than an oil tanker, and crewed fixed or floating drilling rig or other platform shall maintain an Oil Record Book Part I (Machinery Space Operations).
An oil tanker of 150 gross tons and above or a non-oil tanker that carries 200 cubic meters or more of oil in bulk, shall also maintain an Oil Record Book Part II (Cargo/Ballast Operation).
CONTENT OF OIL RECORD BOOK PART 1
The Oil Record Book Part I shall be completed on each occasion, on a tank-to-tank basis if appropriate, whenever any of the following machinery space operations takes place in the ship:
| 1 | Ballasting or cleaning of oil fuel tanks; |
| 2 | Discharge of dirty ballast or cleaning water from oil fuel tanks; |
| 3 | Collection and disposal of oil residues (sludge and other oil residues); |
| 4 | Discharge overboard or disposal otherwise of bilge water which has accumulated in machinery spaces; and |
| 5 | Bunkering of fuel or bulk lubricating oil. |
In the event of such discharge of oil or oily mixture as is referred to in regulation 4 of this Annex or in the event of accidental or other exceptional discharge of oil not excepted by that regulation, a statement shall be made in the Oil Record Book Part I of the circumstances of, and the reasons for, the discharge.
Each completed operation shall be signed by the officer or officers in charge of the operations concerned and each completed page shall be signed by the master of ship.
OIL RECORD BOOK PART 2
The Oil Record Book Part II shall be completed on each occasion, on a tank-to-tank basis if appropriate, whenever any of the following cargo/ ballast operations take place in the ship:
| 1 | Loading of oil cargo; |
| 2 | Internal transfer of oil cargo during voyage; |
| 3 | Unloading of oil 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 of all applicable valves or similar devices after slop tank discharge operations; |
| 9 | Closing of valves necessary for isolation of dedicated clean ballast tanks from cargo and stripping lines after slop tank discharge operations; and |
| 10 | Disposal of residues. |