March 19 - Huisman has received a letter of intent for the delivery of two cranes with lifting capacities of 10,000 tonnes at a radius of 48 m onboard Hereema's new semi-submersible crane vessel.
According to Huisman, these machines, which will be built at the Huisman production facility in China, will be the world's largest cranes.
The cranes will be tub mounted, but unlike traditional tub cranes which make use of bogies or large wheels for their slew system, the Huisman cranes will use large bearings of the manufacturer's own design - this system allows for accurate control of the slewing motion of the crane and requires little maintenance, said Huisman.
The two cranes will feature a 2,500-tonne auxiliary hoist and a whip hoist with a maximum reach of 155 m. In a reduced reeving, the main hoist will be able to lift 1,000 tonnes to a 1,000 m water depth, and will be fitted with active heave compensation (AHC).
