Pile Ring is an innovative mooring device that provides constant and automatic line adjustment. Pile Ring sits on the surface of the water around a mooring pile. Mooring ropes from your boat, craft or floating solar plant are tied to the Pile Ring instead of the pile. The Pile Ring floats up and down the mooring pile at the same rate as your boat or craft and as such never needs adjusting. Your boat will always have tight and/or perfectly adjusted lines.