Question 165 Rules of the Road

The correct answer is D) Only the stern light of the vessel. According to the Navigation Rules, International - Inland, a vessel is considered to be overtaking another vessel when it is approaching from a direction more than 22.5 degrees abaft the beam of the vessel being overtaken. In this situation, the overtaking vessel will only be able to see the stern light of the vessel ahead, and not the sidelights or masthead lights. The other options are incorrect because sidelights and masthead lights would only be visible if the overtaking vessel was approaching from a direction less than 22.5 degrees abaft the beam of the vessel being overtaken, which would not be the case for an overtaking situation.