A vessel is the broadest legal and technical term for any craft that travels on or under the water. It encompasses everything from small rowboats and sailing yachts to massive supertankers, submarines, and floating oil rigs. In maritime law, classifying a structure as a vessel subjects it to specific navigation rules, safety regulations, and salvage laws.
Heard on the job
The coast guard requires all motorized vessels to carry approved fire extinguishers and distress signals.
Insider tip
Use vessel in legal, regulatory, or formal contexts, and ship or boat for everyday operational talk.
Do not mix it up with
- Ship: A ship is a large, ocean-going vessel; all ships are vessels, but not all vessels are ships.