You are making a sharp turn in a channel and using a buoy four points on the bow to gauge your rate of turn. If you observe the buoy moving aft relative to you, what should you do?

Correct Answer: Option D — Increase the rate of turn

If the buoy moves aft, the vessel is not turning sharply enough to maintain the desired track, effectively widening the turn. Increasing the rate of turn brings the vessel back toward the intended pivot point relative to the buoy, ensuring the vessel stays within the channel's safe navigable limits.