Boating Coach US
Aids to navigationQuestion 228 of 352

A buoy has a green band on top of a red band. For the preferred channel, how do you treat it?

  1. As a starboard hand mark
  2. As a port hand mark
  3. As a safe water mark
  4. As an isolated danger mark
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Correct answer: As a port hand mark

The top color tells you the main route. A green top band means a port hand mark for the preferred channel.

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