Telescoping Hydraulic Boom Marine Crane are most suitable when the amount of space on deck is ample. These cranes offer a cost-effective alternative to Fixed booms,knuckle booms or telescopic booms.Those cranes are fixed where the lift is mostly done by the winch. Cannot be hydraulically extended and retracted and have no knuckle function.Hydraulic Boom Marine Crane are reliable and effective cranes for general cargo handling and service onboard ships and offshore units. Tailor made to your requested specifications, in different boom lengths and lifting capacities for different sea state working conditions. All cranes can be equipped with different accessories and class certified by BV/CCS. Project manager: Abby gao 0086-134 8207 5863