CB T38-1999 Double Roller ChockMarine chocks duwe macem-macem formulir kayata chock ditutup, chock mbukak, ora-roller chock, roller chock.
CB T38-1999 Three Roller ChockMarine chocks duwe macem-macem wujud kayata chock tertutup, chock mbukak, chock tanpa rol, chock roller.