Coast Guard Exams
Question 454Rules of the Road90% 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?

Diagram for question 454
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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