Question 103 Rules of the Road

The correct answer is D) All of the above. The situations described in all the answer choices can indicate a risk of collision under both the International and Inland Navigation Rules. These rules state that a risk of collision shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change, even if an appreciable bearing change is evident, particularly when approaching a vessel at close range. Observing both sidelights of a vessel ahead for an extended period can also signify a risk of collision. All of these scenarios suggest that the relative positions of the vessels are not changing significantly, indicating a potential collision course.