Question 454 Rules of the Road

90% to pass

INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown in illustration D042RR below. Vessel "A" sounds one short blast of the whistle. What does this signal mean?

Rules of the Road Question 454 diagram
A "I intend to intend to overtake you on your port side"
B "I am intend to leave you on my starboard side"
C "I am altering my course to port"
D None of the above
AI Explanation

The correct answer is D) None of the above. The one short blast of the whistle does not have the meaning of any of the provided answer choices. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a one short blast of the whistle is used to indicate "I am altering my course to starboard". It does not signal any intention to overtake or leave the other vessel on a particular side. The other answer choices do not accurately reflect the meaning of the one short blast whistle signal in the given scenario.

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