Boating Coach US
Aids to navigationQuestion 266 of 352

Why might a buoy bell or gong stay silent?

  1. Calm seas give them too little motion
  2. They work only in daylight
  3. They need a radio call each time
  4. They are made for night use only
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Correct answer: Calm seas give them too little motion

Most buoy signals are moved by waves. Do not depend on sound alone to find a buoy.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.47 Sound signals

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Questions last reviewed: 18 October 2026