Question 438 Rules of the Road

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INTERNATIONAL ONLY Which lights shall a vessel that is constrained by her draft, display, in a vertical line to indicate her condition?

A Three 360° blue lights
B Two 225° red lights
C Three 360° red lights
D Two 225° blue lights
AI Explanation

The correct answer is C) Three 360° red lights. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel constrained by her draft must display three 360° red lights in a vertical line to indicate her condition. This signals to other vessels that the displaying vessel is restricted in her ability to maneuver due to her draft. The other answer choices are incorrect because they do not match the COLREGS requirement for the proper lights to be displayed by a vessel constrained by her draft.

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