Question 861 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND At night, which lights shall a vessel exhibit to indicate that she is restricted in her ability to maneuver?

A two white lights with a red light in between in a vertical line
B two red lights and two white lights in a vertical line
C Three red lights in a vertical line
D two red lights with a white light in between in a vertical line
AI Explanation

The correct answer is D) two red lights with a white light in between in a vertical line. This is the correct answer because according to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel restricted in her ability to maneuver must exhibit this vertical three-light signal at night to indicate her status. The two red lights on top and bottom with the white light in the middle is the required configuration for this navigation light signal. The other answer choices are incorrect because they do not match the specific light configuration mandated by the COLREGS for vessels restricted in their ability to maneuver.

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