🔍 Key Concepts

• MARPOL requirements for Oil Record Books and how they differ for oil tankers vs. other ships • The purpose of Part I (Machinery space operations) and Part II (Cargo/ballast operations) in an Oil Record Book • Which operations are typical on a small oil tanker of 150 gross tons and above (think: does it carry oil cargo or only use oil as fuel?)

💭 Think About

• Ask yourself: Is this vessel size and type likely to be involved in cargo and ballast operations with oil, or only machinery-space oil use and discharge? • Which part of the Oil Record Book is linked to fuel/oily bilge/oily residues, and which part is linked to cargo and ballast tank operations? • Does MARPOL set a different Oil Record Book requirement for oil tankers than for other types of ships of similar tonnage?

✅ Before You Answer

• Verify what Part I covers (hint: machinery space, fuel, sludge, bilges) and which ships must keep it. • Verify what Part II covers (hint: cargo tanks, ballast in cargo tanks, tank cleaning) and which oil tankers must keep it. • Confirm whether an oil tanker of 150 gross tons and above meets the threshold where cargo/ballast operations must be recorded, not just machinery-space operations.