Question 902 Rules of the Road

The correct answer is B) Five short and rapid blasts. The reasoning behind this is that when the overtaking vessel sounds a signal indicating their intention to pass on your starboard side, and you deem this action to be dangerous, you should sound the danger signal of five short and rapid blasts. This signals to the overtaking vessel that the maneuver they intend to perform is unsafe and they should not proceed. The other options are incorrect because they do not represent the proper danger signal as outlined in the International and Inland Navigation Rules. Option A is a different set of signal blasts, option C is too few blasts, and option D is a different signal entirely.