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.

Related Questions
Q875:BOTH INTERNATIONAL & INLAND A vessel engaged in mine clearance operations shows ... Q993:BOTH INTERNATIONAL & INLAND You are at anchor in fog. The fog signal of a vessel... Q13: INTERNATIONAL ONLY Which is TRUE of a towing light when the power-driven vesse... Q328:INLAND ONLY Which lights are required for a single barge being towed alongside? ... Q511:BOTH INTERNATIONAL & INLAND A vessel is displaying ONLY the lights shown in illu...

Ready to test your knowledge?

Take a Rules of the Road Practice Exam
Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG Navigation Center
← Previous Question All Questions Next Question →

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac