Which of these is NOT restricted in her ability to maneuver?

• A. Laying A Pipeline
• B. Not Under Command
• C. Mineclearing
• D. Dredging

Answer: (B)

Vessels restricted in their ability to maneuver are those whose activities limit their capacity to alter course or speed to avoid other traffic. The rules recognize that certain operations require staying on a set line or maintaining a specific position for safety and effectiveness, so other vessels must be prepared to take appropriate action.

Pipeline laying, mine clearance, and dredging are classic examples of work that constrains a vessel’s maneuvering. A pipeline-laying vessel must often hold a precise track, a mine-clearer requires controlled operations to ensure safety and effectiveness, and a dredger typically works in a confined area with limited ability to swing away from obstacles. These vessels are described as restricted in their ability to maneuver because their tasks dictate their movement.

Not Under Command, on the other hand, describes a vessel that cannot maneuver as required due to some deficiency or emergency, not because of the nature of its ongoing work. While other vessels must still take extra care around a Not Under Command vessel, this status is not a specific example of being restricted by the nature of the operation itself.

So the option that is not restricted in her ability to maneuver by the nature of her work is the Not Under Command vessel.