Buoys and markersQuestion 505 of 566

A buoy is solid yellow. What type is it?

  1. A mooring buoy
  2. A diving buoy
  3. A cautionary buoy
  4. A swimming buoy
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Correct answer: A cautionary buoy

Cautionary buoys are solid yellow.

Source: Safe Boating Guide (TP 511E, 2026), Cardinal Buoys and Special Buoys, page 65

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Questions last reviewed: 18 October 2026