BOTH INTERNATIONAL & INLAND You are preparing to cross a narrow channel. You see a vessel that can only be navigated safely within the channel. Which action should you take?

Correct Answer: Option B — not cross the channel if you might impede the other vessel

Rule 9(b) states that a vessel shall not cross a narrow channel or fairway if such crossing impedes the passage of a vessel which can safely navigate only within that channel. The burden is on the crossing vessel to ensure she does not obstruct the constrained vessel's path.