Large shipboard crane with a Triple Row external toothed Roller Slewing Ring. The high load capacity and compact proportions of this type of Slewing Ring are ideally matched to the mast and base block proportions of the crane.

Deep sea fishing vessels use Ball Slewing Rings for shipboard cranes and net handling equipment. Typical external diameters range between 600 to 1,500 mm (23,6 to 59)