Question 674 Rules of the Road

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BOTH INTERNATIONAL & INLAND Which shape shall a 22-meter sailing vessel exhibit when it is being propelled by machinery during daylight hours?

A black diamond
B basket
C black ball
D black cone
AI Explanation

The correct answer is D) black cone. According to the International and Inland Navigation Rules, a sailing vessel of 20 meters or more in length that is being propelled by machinery during the day must exhibit a black cone, point up, as the shape signal. This is specified in Rule 25(c) of the Navigation Rules. The other answer choices are incorrect because a black diamond is not a recognized shape signal, a basket is not a recognized shape, and a black ball is the shape signal for a vessel at anchor, not a vessel being propelled by machinery.

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