USCG Exam Practice · Aids to Navigation — IALA-B (US) buoyage
Which of the following correctly describes a nun buoy in the US lateral system?
- ACylindrical shape, green color, odd number
- BConical shape, red color, even number✓ correct
- CConical shape, green color, odd number
- DCylindrical shape, red color, even number
Why B is correct
A nun buoy has a conical, pointed top, is red in color, and carries even numbers. It is a starboard-side aid kept to starboard when returning from sea in IALA-B.
Cited:Light List — Nun Buoy
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