A vessel engaged in dredging while underway is restricted in her ability to maneuver.

• A. Constrained By Her Draft
• B. Sailing Vessel
• C. Restricted In Her Ability To Maneuver
• D. Not Under Command

Answer: (C)

The situation falls under the category of vessels restricted in their ability to maneuver. In the Navigation Rules, a vessel that is performing a specific operation—like dredging, underwater work, or mine clearance—while underway is considered RAM because the nature of the work limits how freely the vessel can alter course or speed. Dredging requires positioning and stability for the equipment, so the vessel cannot maneuver as independently as a normal power-driven vessel.

This is the best choice because it matches that defined category. The other options describe different vessel statuses that don’t apply here: a vessel constrained by draft is limited by water depth rather than by the operation itself; a sailing vessel is characterized by sails or sailing propulsion, which isn’t implied by dredging; and not under command means a complete loss of ability to maneuver due to a failure, which isn’t indicated by performing dredging.