Question 571 Rules of the Road

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BOTH INTERNATIONAL & INLAND You are operating in restricted visibility and hear a signal of a rapidly ringing bell followed by the rapid sounding of a gong. Which vessel is required to sound this signal?

A vessel in distress
B 30-meter sail vessel at anchor
C 300-meter power-driven vessel at anchor
D 150-meter power-driven vessel aground
AI Explanation

The correct answer is C) 300-meter power-driven vessel at anchor. The International Regulations for Preventing Collisions at Sea (COLREGS) require a power-driven vessel of 100 meters or more in length to sound the signal of a rapidly ringing bell followed by the rapid sounding of a gong when anchored in restricted visibility. This signal is used to indicate the presence of the large, anchored vessel to avoid collisions. The other options are incorrect because: A) a vessel in distress would sound different distress signals, B) a 30-meter sail vessel at anchor would not be required to sound this particular signal, and D) a 150-meter power-driven vessel aground would not be sounding this anchored vessel signal.

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