Coast Guard Exams
Question 445Rules 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 action should vessel "B" take?

Diagram for question 445
AI Explanation
The correct answer is D) Maintain course and speed. This is the correct answer because according to the International Regulations for Preventing Collisions at Sea (COLREGS), when two power-driven vessels are crossing, the vessel that has the other on its own starboard side (Vessel "B" in this case) is the stand-on vessel and must maintain its course and speed. Vessel "A" is the give-way vessel and must take action to avoid a collision by altering course to starboard. The other options are incorrect because they would go against the COLREGS rules for a crossing situation. Sounding a signal or altering course or speed is the responsibility of the give-way vessel, not the stand-on vessel.

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