USCG Exam PracticeAids to Navigation — IALA-B (US) buoyage
In the IALA-B system used in US waters, what numbering convention applies to green starboard-hand buoys?
- A. Even numbers
- ✓ Odd numbersCorrect
- C. Letters only
- D. No numbers; only colors are used
Why B is correct
Under IALA-B, even numbers are assigned to red port-hand aids and odd numbers to green starboard-hand aids when returning from sea.
Cited:Bowditch Ch. 5 §501