🔍 Key Concepts

• Oil Record Book (ORB) requirements for ships, especially cargo/container vessels • The minimum gross tonnage threshold at which pollution-prevention recordkeeping is required • Relationship between MARPOL Annex I and U.S. implementation in 46 CFR for oil pollution prevention

💭 Think About

• Think about why regulators only require an Oil Record Book above a certain size. Which sizes are commonly used as thresholds for international pollution-prevention rules? • Recall other pollution-prevention requirements (e.g., IOPP Certificate, SOPEP/SMPEP). At what gross tonnage do those typically start applying to cargo ships? • Consider whether very small coastal cargo/container vessels would reasonably be expected to keep an ORB, or whether the requirement is aimed at larger, seagoing ships.

✅ Before You Answer

• Check which gross tonnage threshold is most commonly tied to MARPOL Annex I and oily-waste management on cargo ships (not tankers). • Verify that the option you pick matches a standard international tonnage cutoff used in several other equipment/certification requirements for cargo/container vessels. • Eliminate any tonnage values that are more typical of domestic-only or small-vessel rules rather than international pollution-prevention conventions.