Navigation lights and shapesQuestion 71 of 352

At night, which extra lights may a boat show besides its required navigation lights?

  1. Any lights the crew likes
  2. Lights that cannot be mistaken for the required lights
  3. Only red and green deck lights
  4. Strobe lights that flash in all directions
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Correct answer: Lights that cannot be mistaken for the required lights

Extra lights must not look like the required lights, hide them, or block a good lookout.

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