Question 418 Rules of the Road

90% to pass

INTERNATIONAL ONLY While underway at night, a power-driven vessel of less than 7 meters in length, whose maximum speed which does not exceed 7 knots, may show which of the following?

A Sidelights combined in a single lantern, only
B An all-round flashing yellow light, only
C A lantern showing a white light exhibited in sufficient time to prevent collision, only
D One all-round white light, only
AI Explanation

The correct answer is D) One all-round white light, only. Under the International Regulations for Preventing Collisions at Sea (COLREGS), a power-driven vessel of less than 7 meters in length whose maximum speed does not exceed 7 knots is only required to exhibit one all-round white light while underway at night. This is stated in Rule 23(c)(i) of the COLREGS. The other options are incorrect because a vessel of this size and speed is not required to show sidelights (A), a flashing yellow light (B), or a white light to prevent collision (C) - a single all-round white light is the only lighting requirement.

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