Description
Class B63C : LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
Subclass 3/04: Launching or hauling-out, e.g. by landborne slipways; Slipways (ship-borne guides for handling lifeboats or the like B63B 23/3; cranes, winches, or the like B66; ship-lifting for adapting to different water levels E02C) by sideways movement of vessel