Boating Coach US
Navigation lights and shapesQuestion 68 of 352

It is daytime, but heavy fog limits what you can see. Your boat has navigation lights. What should you do?

  1. Leave them off until sunset
  2. Turn them on only if you have a radio
  3. Turn them on, as the rules require in restricted visibility
  4. Turn on only the white light at the stern
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Correct answer: Turn them on, as the rules require in restricted visibility

Lights that a boat carries must also show by day when visibility is restricted.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.20 Application (Rule 20)

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Questions last reviewed: 18 October 2026