Question 759 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND What is the minimum length of a power-driven vessel that must show forward and after masthead lights?

A 30 meters
B 50 meters
C 75 meters
D 100 meters
AI Explanation

The correct answer is B) 50 meters. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, the minimum length of a power-driven vessel that must show forward and after masthead lights is 50 meters (approximately 164 feet). This requirement is specified in Rule 23 of both the International and Inland Navigation Rules. The other options are incorrect because 30 meters is too short (the requirement is 50 meters), and 75 meters and 100 meters are longer than the minimum length specified in the regulations.

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