Question 764 Rules of the Road

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BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown in illustration D052RR below represents which of the following?

Rules of the Road Question 764 diagram
A a vessel dredging
B a vessel underway
C a vessel aground
D a vessel at anchor
AI Explanation

The correct answer is B) a vessel underway. The lights displayed in illustration D052RR, which consist of a masthead light, sidelights, and a stern light, represent the lighting configuration required for a power-driven vessel underway at night under both the International and Inland Navigation Rules. The other answer choices are incorrect because the lighting configuration does not match the requirements for a vessel dredging (A), a vessel aground (C), or a vessel at anchor (D), which have different light display requirements.

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