A vessel is returning from sea in US waters. On which side should a nun buoy be kept?

A. Port side
B. Dead ahead
✓ Starboard sideCorrect
D. Either side, depending on the channel width

Why C is correct

A nun buoy is a conical, red, even-numbered aid in the IALA-B system. When returning from sea, nun buoys are kept on the starboard side, consistent with the 'red right returning' convention.

Cited:Light List — Nun Buoy Bowditch Ch. 5 §501

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A vessel is returning from sea in US waters. On which side should a… — USCG Exam Practice · CaptainsGround