Question 570 Rules of the Road

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BOTH INTERNATIONAL & INLAND You are underway in fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. Which vessel is required to sound this signal?

A At anchor, greater than 100 meters
B Not under command at anchor
C Aground
D At anchor, giving warning
AI Explanation

The correct answer is C) Aground. The signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell is the signal required to be sounded by a vessel that is aground, as per the International Regulations for Preventing Collisions at Sea (COLREGS). The other answer choices are incorrect because: A) A vessel at anchor greater than 100 meters would sound a different signal of one stroke of the bell every minute. B) A vessel not under command at anchor would sound a different signal of two rapid strokes of the bell. D) A vessel at anchor giving warning would sound a different signal of one stroke of the bell every minute.

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