Boating Coach US
Aids to navigationQuestion 227 of 352

A buoy has red and green horizontal bands. What does it mark?

  1. A safe route with water all around it
  2. An area closed to all vessels
  3. An area where anchoring is banned
  4. A channel junction, where you may pass on either side
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Correct answer: A channel junction, where you may pass on either side

Red and green bands show a channel split or an obstruction. Check a chart to see which way to go.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.25 Lateral marks

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Questions last reviewed: 18 October 2026