Question 1506Navigation General

The correct answer is D) All of the above. On the Western Rivers, a vessel crossing the river must keep out of the way of a power-driven vessel, regardless of whether the power-driven vessel is ascending the river with a tow, ascending the river without a tow, or descending the river with a tow. This is in accordance with the Western Rivers Rules, which stipulate that a vessel crossing a river must keep out of the way of any power-driven vessel. The other options are incorrect because they do not cover all the scenarios where the crossing vessel must yield to the power-driven vessel.