Boating Coach
Emergencies and cold waterQuestion 266 of 566

Which of these can create carbon monoxide?

  1. Any burning fuel with carbon, such as propane or charcoal.
  2. Only a gasoline engine running at speed.
  3. Only a diesel engine running at speed.
  4. Only a heater that is inside the cabin.
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Correct answer: Any burning fuel with carbon, such as propane or charcoal.

Gasoline, propane, charcoal and oil all make CO when they burn.

Source: Safe Boating Guide (TP 511E, 2026), Be aware of carbon monoxide dangers, page 34

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Questions last reviewed: 18 October 2026