🔍 Key Concepts

• 33 CFR Part 151 requirements for Oil Record Books • Who is considered "in charge" of an oil transfer or machinery-space operation on a vessel • Difference between overall vessel responsibility (master) and direct operational responsibility

💭 Think About

• Think about who actually supervises and controls the specific oil-handling or machinery operation being recorded, not just who commands the vessel overall. • Ask yourself: does the regulation require one signature or two, and are they based on rank (like master/credentialed officer) or on responsibility for the specific operation? • Consider how the Coast Guard would later use the Oil Record Book: whose signature do they need to prove that the recorded operation was properly carried out?

✅ Before You Answer

• Verify in 33 CFR Part 151, Subpart A who must sign each entry in the Oil Record Book after a required operation. • Check whether the regulation specifically mentions the master, a credentialed officer, or the person in charge of the operation. • Confirm if the regulation requires an additional witness or officer’s signature beyond the person who conducted/supervised the operation.