UMC International designed polymer plain bearings into a new boat hull cleaning machine for use by underwater divers. The bearings require no lubrication and are impervious to corrosion and salt water.
The Hampshire based company manufacture hydraulically powered hull cleaning machines, which typically have two rotating brushes. The vehicles can be powered forward or reversed, steered and the brushes raised and lowered on a gimbal mechanism. The usual cleaning speed is 1,000 square metres per hour.