Question 645 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND If a rowboat underway does NOT show the lights specified for a sailing vessel underway, it shall show which of the following?

A a combined lantern showing green to starboard and red to port and shown from sunset to sunrise
B a combined lantern showing green to starboard and red to port and shown in sufficient time to prevent collision
C a white light exhibited in sufficient time to prevent collision
D an all-round yellow light from sunset to sunrise
AI Explanation

The correct answer is C) a white light exhibited in sufficient time to prevent collision. According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, a rowboat underway that is not exhibiting the required lights for a sailing vessel must show a white light in sufficient time to prevent collision. This is specified in Rule 25(d) of the COLREGS and Rule 23(e) of the Inland Navigation Rules. The other options are incorrect because A) and B) describe the required lights for a sailing vessel, not a rowboat, and D) specifies an all-round yellow light, which is not the correct light for a rowboat underway.

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