Question 667 Rules of the Road

The correct answer is B) not under command. The explanation is as follows: 1) Vessels that are "restricted in their ability to maneuver" are defined in the navigation rules as vessels engaged in activities such as dredging, mine-clearing, or laying pipelines. These vessels have limited maneuverability and must be given appropriate right-of-way. 2) A vessel "not under command" is not restricted in its ability to maneuver, as it has lost the ability to maneuver and is considered to be out of control. Therefore, it is the exception to the list of vessels that are "restricted in their ability to maneuver." 3) The other options (A, C, and D) are all examples of vessels that are considered "restricted in their ability to maneuver" and must be treated accordingly per the navigation rules.