Boating Coach US
Aids to navigationQuestion 264 of 352

You travel south on the Atlantic Intracoastal Waterway. What does a yellow square on an aid mean?

  1. Keep the aid on your right side
  2. Anchor near the aid
  3. Keep the aid on your port (left) side
  4. Danger is below the aid
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Correct answer: Keep the aid on your port (left) side

The yellow square tells you to pass with the aid to your left, no matter its other colors.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.49 Intracoastal Waterway identification

All questionsPractice the topic "Aids to navigation"

Questions last reviewed: 18 October 2026