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What is Oil Record Book (ORB) & who is required to make the entries in oil record book. What all entries you write in Oil Record Book?


When oil handling work is carried out, the Master, Chief Officer and Chief Engineer shall enter the facts in the Oil Record Book and sign the same according to below procedures.

Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I (Machinery Space Operations).

Keeping Oil Record Book:

The Master shall keep onboard the following Oil Record Books require by laws and regulations

  • Oil Record Book for tankers (cargo and ballast operations) and
  • Oil Record Book for all ships (machinery space operations).
Persons Who Will Sign Entries In Oil Record Book:
  • For oil tankers chief officer and others ships chief engineer
  • Each completed page shall be countersigned by the Master
  • Or the officer in charge of the operation must be the one who signs the entry and it must be done without delay upon completion of the operation, This does not automatically mean the Chief Engineer for engine space operations and the chief officer for oil cargo operations. It should be the officer supervising the operation.
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 space:
  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 (oil residue (sludge))
  4. discharge overboard or disposal otherwise of bilge water which has accumulated in machinery space;
  5. bunkering of fuel or bulk lubricating oil.

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