There are in principle four methods that can be used for loading and unloading heavy unit loads on these ships: Lift on and off, Slide on and off over a special slideway, Roll on and off, Float on and off.
Emgaqweni kukho indlela ezine ezinokusetyenziswa ekuthwalisweni nasekuthuleni imithwalo enzima kwezi nqanawa ukuphakamisa phezulu nokuhlisa ukutshebeleza okukhoyo nokungekhoyo, phezulu kwendlela ethile yokutshebeleza ukuqengqeleka okukhoyo nokungekhoyo ukujika okukhoyo nokungekhoyo