Question 443 Rules of the Road

90% to pass

INTERNATIONAL ONLY A power-driven vessel leaving a quay or wharf must sound what signal?

A Three short blasts
B A long blast
C A prolonged blast
D No signal is required.
AI Explanation

The correct answer is D) No signal is required. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a power-driven vessel leaving a quay or wharf is not required to sound any signal. The COLREGS do not mandate a specific sound signal for this situation. The other options, such as three short blasts, a long blast, or a prolonged blast, are not the correct signals for a power-driven vessel departing a quay or wharf under the international rules.

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