Question 213Navigation General

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In illustration D044NG below, what type of buoy is indicated by the letter A?

Diagram for USCG Navigation General: In illustration D044NG below, what type of buoy is indicated by the letter A?
A spar
B nun
C can
D pillar
AI Explanation

The correct answer is C) can. The illustration D044NG depicts a navigation buoy system, and the letter A indicates a can buoy. Can buoys are cylindrical-shaped navigational markers that are typically used to mark the sides of a channel or waterway. They are distinguished from other buoy types by their straight, cylindrical shape. The other answer choices are incorrect because: A) spar buoys have a tapered, narrow shape; B) nun buoys have a conical shape; and D) pillar buoys have a tall, narrow profile, unlike the cylindrical can buoy shown in the illustration.

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