Question 401 Rules of the Road

The correct answer is C) Do not cross the channel if you might impede the other vessel. This is the correct answer because the Rules of the Road require a vessel to not cross a narrow channel if doing so would impede or obstruct the passage of another vessel that is already within the channel. A black cylinder indicates a vessel restricted in her ability to maneuver, so the prudent action is to hold your course and speed and not cross the channel, to avoid impeding the other vessel. The other options are incorrect because: A) Sounding the danger signal is not necessary in this scenario, B) Holding course and speed is not the appropriate action when you may impede another vessel, and D) There is no need to exchange passing signals in this case, as the proper action is to not cross the channel.