Boating Coach US
Aids to navigationQuestion 252 of 352

Why should you not use a buoy alone to find your position?

  1. Buoys always sink in daylight
  2. Buoys are never charted
  3. Buoys change color at night
  4. The buoy can drift off its charted spot
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Correct answer: The buoy can drift off its charted spot

Buoys move within a circle set by their chain, and storms or ships can move them. Use other methods too.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.23 Beacons and buoys

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Questions last reviewed: 18 October 2026