Which of the following vessels would be considered "restricted in their ability to maneuver"?

The correct answer is that a vessel constrained by her draft is considered "restricted in their ability to maneuver." This classification is specified in the COLREGs under Rule 3, which describes the different categories of vessels and their maneuvering capabilities. A vessel constrained by her draft is one that is unable to deviate from her course because she is operating in waters that are too shallow for her to navigate freely. This limitation can hinder the vessel's ability to take effective action to avoid collisions and may require special considerations in passing situations.

In contrast, a vessel operating in a wide navigable channel is not necessarily restricted in its maneuverability—it is typically able to navigate freely within that channel. A vessel engaged in fishing may have certain restrictions based on fishing gear, but it does not automatically fall into the category of being restricted in its ability to maneuver unless specific circumstances apply. Finally, a vessel at anchor is generally not considered restricted in maneuverability, as it is stationary and not engaged in navigating the waters.