Environment and securityQuestion 434 of 566

Which is a sign of suspicious activity?

  1. A vessel anchored or running without lights in the dark
  2. A vessel anchored with lights lit
  3. A fishing boat at dawn
  4. A sailboat under power in the harbour
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Correct answer: A vessel anchored or running without lights in the dark

Running or anchoring without lights at night is on the guide's suspicious list.

Source: Safe Boating Guide (TP 511E, 2026), How you can help, page 60

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Questions last reviewed: 18 October 2026