Question 9 Rules of the Road

The correct answer is C) If the stand-on vessel takes action, she shall avoid changing course to port. This is correct because according to the International Regulations for Preventing Collisions at Sea (COLREGS), 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 is the stand-on vessel and shall maintain her course and speed. If the stand-on vessel takes action, she should avoid changing course to port, as this could increase the risk of collision. The other answer choices are incorrect because A) is the general rule for stand-on and give-way vessels, but not specific to the situation described; B) and D) provide incorrect guidance on the actions the give-way vessel should take.