Externally toothed Ball Slewing Rings with a diameter of 118 in are used in this oil spill barrier reel on an FSPO (Floating Production Storage Offloading) unit.

Buoys for transferring crude oil from the sea bed to an FPSO ship have a sviveling transfer system to allow for movement of the ship with wind direction changes (weather vaning).

Untoothed Triple Row Roller Slewing Rings, of diameter around 67 in, are used in a so called “product swivel”.