Question 252 Rules of the Road

The correct answer is B) if the circumstances of the case admit, avoid crossing ahead of the other. This is the correct answer because the International Regulations for Preventing Collisions at Sea (COLREGS) Rule 15 - Crossing Situation states that "When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her own starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel." The other answer choices are incorrect because: A) changing course to port is not the required action, C) reducing speed alone is not sufficient, and D) all the options are not required - the vessel must specifically avoid crossing ahead of the other vessel if the circumstances allow.