Boating Coach
Buoys and markersQuestion 469 of 566

What does an isolated danger buoy mark?

  1. The outer edge of a swimming area
  2. A place where a channel splits in two
  3. A small shoal or wreck with open water on all sides
  4. A safe place to drop your anchor
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Correct answer: A small shoal or wreck with open water on all sides

The danger is small and has navigable water all around it, so you can pass on any side.

Source: Safe Boating Guide (TP 511E, 2026), Lateral Buoys and Standard Daybeacons, page 64

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Questions last reviewed: 18 October 2026