Question 429 Rules of the Road

90% to pass

INTERNATIONAL ONLY A power-driven vessel pushing ahead or towing alongside will show sidelights, a stern light, and which additional light(s)?

A A single white light forward
B Two masthead lights in a vertical line
C Two yellow masthead lights in a vertical line
D An all-round red light where it can best be seen
AI Explanation

The correct answer is B) Two masthead lights in a vertical line. The International Regulations for Preventing Collisions at Sea (COLREGS) state that a power-driven vessel pushing ahead or towing alongside must show sidelights, a stern light, and two masthead lights in a vertical line. This is specified in Rule 23(a) of the COLREGS. The other answer choices are incorrect because: A) a single white light forward is not the correct configuration, C) two yellow masthead lights is not the requirement, and D) an all-round red light is not the correct light for this type of vessel.

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