Boating Coach US
Aids to navigationQuestion 249 of 352

Which statement about the aids to navigation system is true?

  1. It marks every hazard in all waters
  2. It marks only deep ocean waters
  3. It replaces the need for a chart
  4. It does not mark every shoal or obstruction
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Correct answer: It does not mark every shoal or obstruction

The system marks channels and main dangers as far as resources allow. Many waters have no marks at all.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.1 Purpose

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Questions last reviewed: 18 October 2026