Question 519 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Which lights are shown by a vessel restricted in her ability to maneuver to indicate that the vessel is making way?

A Masthead lights and sidelights only
B Masthead lights, sidelights and stern light
C Sidelights only
D Sidelights and stern light only
AI Explanation

The correct answer is B) Masthead lights, sidelights and stern light. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel restricted in her ability to maneuver must exhibit the same navigation lights as a power-driven vessel underway, which includes masthead lights, sidelights, and a stern light. This is specified in Rule 27(b)(i) of the COLREGS, which states that such a vessel "shall exhibit the lights prescribed in Rule 23 for a power-driven vessel underway." The other options are incorrect because they do not fully comply with the COLREGS requirements for a vessel restricted in her ability to maneuver. Option A is missing the stern light, option C is missing the masthead lights and stern light, and option D is missing the masthead lights.

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