🔍 Key Concepts

• 46 CFR Subchapter D & O – regulations for tank vessels and dangerous liquid cargoes • Purpose of a Certificate of Inspection (COI) vs. other safety or gear certificates • What a Declaration of Inspection (DOI) is used for in tankship/tank barge operations

💭 Think About

• For each option, ask: Is this document about the whole vessel’s authorization (cargoes, manning, and equipment), or about a specific operation or piece of equipment? • Think about when you would show this document to a Coast Guard marine inspector coming aboard for a routine inspection. • Which document must be posted or readily available on board and is issued by the U.S. Coast Guard for inspected vessels?

✅ Before You Answer

• Verify which document lists authorized routes, cargoes, manning, and required safety equipment for inspected vessels under 46 CFR. • Check what a Declaration of Inspection covers – is it about each transfer operation or the vessel’s overall characteristics? • Confirm whether the Cargo Gear Certificate and Safety Construction Certificate apply mainly to cargo handling gear/structural safety or to the full set of manning and cargo authorizations.