Navigation lights and shapesQuestion 109 of 352

A boat of less than 50 meters is at anchor at night. Which light may it show?

  1. A red light over a green light
  2. Two red lights
  3. One all-round white light
  4. A flashing yellow light
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Correct answer: One all-round white light

A small boat may use one white all-round light where it is seen best.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.30 Vessels anchored, aground and moored barges (Rule 30)

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Questions last reviewed: 18 October 2026