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Navigation lights and shapesQuestion 85 of 352

A power boat is 10 meters long. What lights may it show instead of the usual set?

  1. A single red light
  2. Two masthead lights and a sternlight
  3. One green all-round light
  4. An all-round white light and sidelights
Show answer

Correct answer: An all-round white light and sidelights

Boats under 12 meters may use one all-round white light with sidelights.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.23 Power-driven vessels underway (Rule 23)

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Questions last reviewed: 18 October 2026