Aids to navigationQuestion 238 of 352

What colors do information and regulatory marks use?

  1. Black shapes on a yellow background
  2. Orange shapes on a white background
  3. Red shapes on a white background
  4. Blue shapes on a white background
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Correct answer: Orange shapes on a white background

These marks use orange shapes on white. A buoy of this kind is white with two orange bands.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.33 Information and regulatory marks

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Questions last reviewed: 18 October 2026