Boating Coach
Safety equipmentQuestion 227 of 566

Which mark shows an extinguisher is certified for use on your boat?

  1. ISO or CE
  2. CSA or DOT
  3. ULC, UL or USCG
  4. NFPA or ABS
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Correct answer: ULC, UL or USCG

The extinguisher must carry a mark from one of these three certifiers.

Source: Safe Boating Guide (TP 511E, 2026), Portable fire extinguishers, page 31

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Questions last reviewed: 18 October 2026