Liebherr's maritime division is going to present its new subsea crane RL-K 7500 at its production plant in Rostock, Germany, in January.

With the new knuckle boom crane the company extends its range of offshore cranes and offers its customers a convenient solution for subsea operations. The RL-K 7500 is able to lift up to 260 tonnes and handle loads down to a water depth of 3,400m. The maximum rope diameter is 100mm, the maximum overturning moment of the crane is 75.000 kNm. Depending on customers' specifications, the boom configuration allows for working radii of up to 50m. One vital advantage of the crane's knuckle boom is that loads can be lowered to the water surface with a short rope length between crane boom head and water line, Liebherr said. Furthermore, the crane is equipped with a number of state-of-the-art hydraulic, electric and electronic features and functions, some of which were submitted for patent by Liebherr, such the active heave compensation system, pactronic and the winch system.