Boating Coach US
Aids to navigationQuestion 241 of 352

What does an orange square or rectangle on a white mark show?

  1. Danger to vessels
  2. Written directions or instructions
  3. A closed area
  4. A speed zone with no words
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Correct answer: Written directions or instructions

Words inside the square or box tell you what to do or where to go.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.33 Information and regulatory marks

All questionsPractice the topic "Aids to navigation"

Questions last reviewed: 18 October 2026