... a ship 3t/8.5m Hydraulic Marine Crane for a ship The crane mainly consists of pedestal, tower frame, jib/ ... boom,hydraulic power pack and the driving cab. The crane has three kinds of mechanism: hoisting, slewing and luffing. ... by the electric motor. All above actions of the crane are to be completed by operating a multi-directional valve ... : CCS, ABS, BV 3t/8.5m Hydraulic Marine Crane for a ship