What determines if a vessel is restricted in her ability to maneuver?

• A. The length of the voyage
• B. The harbor location
• C. The nature of the vessel's work limits maneuverability required by the Rules
• D. The color of the hull

Answer: (C)

The key idea is that a vessel is considered restricted in her ability to maneuver when the nature of her work limits how much she can deviate from a given course or speed. This restriction comes from what she is doing, not from how long she has been at sea, where she is located, or what she looks like.

So, if a vessel is engaged in activities such as dredging, laying or repairing pipelines or cables, underwater operations, servicing navigation marks, or towing/pushing other vessels, those tasks inherently limit her ability to maneuver. In those situations other vessels must take that restricted maneuverability into account, giving the RAM vessel the space and time needed to complete its work. The remaining factors—voyage length, harbor location, or hull color—do not determine this status.