USCG Exam Practice · Aids to Navigation — IALA-B (US) buoyage
In the US lateral buoyage system, which color is used on port-hand lateral aids?
- AGreen
- BRed✓ correct
- CWhite
- DYellow
Why B is correct
In IALA-B, red is used on port-hand lateral aids. Green is used on starboard-hand lateral aids. This is the basis of the 'red right returning' convention.
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