Coast Guard Exams
Question 450Rules of the Road90% to pass

INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters as shown in illustration D017RR below and will pass without changing course. What signal should vessel "A" sound?

Diagram for question 450
AI Explanation
The correct answer is D) No whistle signal should be sounded. According to the International Regulations for Preventing Collisions at Sea (COLREGS), when a vessel is overtaking another vessel, the overtaking vessel (Vessel A) is required to keep out of the way of the vessel being overtaken (Vessel B). In this situation, since Vessel A is overtaking Vessel B and will pass without changing course, Vessel A is not required to sound any whistle signal. The overtaking vessel should simply maintain its course and speed to safely pass the other vessel. The other options are incorrect because they describe whistle signals that are not appropriate for this overtaking situation under the COLREGS.

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