Boating Coach US
Rules of the roadQuestion 145 of 352

Under the Rules, when is a boat a sailing vessel?

  1. Whenever it has a mast
  2. Whenever it has sails on board
  3. When it is under sail and not using its engine
  4. When it is under sail with the engine running
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Correct answer: When it is under sail and not using its engine

A boat is a sailing vessel only when it is under sail and any engine is not in use.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.03 General definitions (Rule 3)

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Questions last reviewed: 18 October 2026