Question 20 Rules of the Road

The correct answer is D) avoid crossing the channel if it impedes another vessel navigating in the channel. This is correct because Rule 9 of the International Regulations for Preventing Collisions at Sea (COLREGS) states that a vessel shall not cross a narrow channel if such crossing impedes the passage of a vessel which can safely navigate only within such channel. The other options are incorrect because: A) Overtaking in a narrow channel is permitted as long as it does not impede the vessel being overtaken. B) Anchoring in the middle of a narrow channel is not recommended, as it could obstruct the passage of other vessels. C) Keeping as close as possible to the port side edge is not a requirement, as long as the vessel avoids impeding the passage of other vessels.