Question 227 Rules of the Road

The correct answer is A) When action by the give-way vessel alone will not prevent a collision. This is the correct answer because under both the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, the stand-on vessel is required to take action to avoid a collision only when it becomes apparent that the give-way vessel is not taking the appropriate action. If the give-way vessel's actions alone can prevent the collision, the stand-on vessel should maintain its course and speed. The other options are incorrect because they do not accurately reflect the requirements for the stand-on vessel to take action. Options B and C are based on specific distance or bearing thresholds, while option D is too broad, as the stand-on vessel should only act when the give-way vessel's actions are insufficient.