Buoys and markersQuestion 512 of 566

Special buoys may carry letters. Which marking do they never carry?

  1. A yellow X
  2. Retroreflective material
  3. Numbers
  4. A yellow light
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Correct answer: Numbers

Special buoys can have letters but no numbers.

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

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Questions last reviewed: 18 October 2026