Question 363Navigation General

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In illustration D045NG below, which shape is a daymark warning of danger?

Diagram for USCG Navigation General: In illustration D045NG below, which shape is a daymark warning of danger?
A A
B B
C C
D D
AI Explanation

The correct answer is B. The shape in illustration D045NG that represents a daymark warning of danger is a triangle. Daymarks are visual aids used to mark navigational hazards and channel edges. According to the United States Coast Guard regulations, a triangle daymark is used to indicate a navigational hazard or area to be avoided. The other shapes in the illustration (A, C, and D) represent different types of daymarks, such as a square for a channel edge or a diamond for a safe water mark, but do not specifically indicate a danger area.

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