Question 302Navigation General

70% to pass

Which buoy may be odd numbered?

A A spherical buoy
B An unlighted can buoy
C A red buoy
D A yellow buoy
AI Explanation

The correct answer is B) An unlighted can buoy. According to the U.S. Coast Guard's navigation rules, odd-numbered buoys are used to mark the left side of a channel when entering from the open sea or heading upstream. Can buoys, which are cylindrical in shape, are commonly used as unlighted channel markers and can be odd-numbered. The other options are incorrect because: A) Spherical buoys are typically used as mooring buoys, not channel markers; C) Red buoys can be either odd or even-numbered; and D) Yellow buoys are typically used as special purpose markers, not channel markers.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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