The main hoist, in a reduced reeving, can lift 1,000mt to 1,000m water depth and is fitted with active heave compensation.Īnne de Groot, Project Director at Huisman: we are extremely proud of this commitment from Heerema. The cranes further feature a 2,500mt aux hoist and a whip hoist with a maximum reach of 155m. The two cranes will each be able to lift 10,000mt at 48m radius in offshore conditions. The slew bearings of these cranes will have a diameter of 30m. Especially on semisubmersibles this is an important feature. 3 Conversion to a DCV was carried out in 2001. 2 In the early 1980s these vessels set several lift records while operating in the North Sea. Balder and sister vessel, Hermod were the world's first semi-submersible crane vessels. Another large benefit of using a bearing is a very significant weight saving. The Balder was constructed in 1978 as semi-submersible crane vessel by Mitsui Engineering & Shipbuilding Co., Ltd. 'This crossing is the first time a Heerema crane vessel has accessed the region and is the result of innovative crane alterations to enable passage below the bridge. GE was chosen to provide a high-performance electrical power and propulsion system powerful enough to meet the operational energy needs of such a ‘sea giant’. The use of bearings on the new 10,000mt Heerema cranes instead of the traditional slew systems allows for very accurate control of the slewing motion of the crane and requires very little maintenance. Dutch offshore installation firm Heerema Marine Contractors said Monday its semi-submersible crane vessel had crossed the Storebaelt Bridge, known as the ‘gate to the Baltic Sea.'. At 220 meters long and 102 meters wide, Sleipnir entered service as the world’s largest crane vessel, with two 10,000-tonne revolving cranes. Both structures were transported on Heerema’s H-541 barge over two trips from Aker Solutions’ yard in. The first phase was installing the jacket while the second phase was installing the topsides. This technique represents a step change in the crane industry, and was previously used successfully on the 5,000mt Offshore Mast Crane for the ‘Seven Borealis’ and the 4,000mt Offshore Mast Crane for Heerema’s ‘Aegir”. Heerema transported and installed the Hod B platform on behalf of client Aker BP in two phases using its semi-submersible crane vessel Sleipnir. Unlike traditional Tub Cranes which make use of either bogies or large wheels for their slew system, the Huisman cranes will make use of large bearings of own design which are manufactured in-house. The vessels cranes provide for a depth reach lowering capability as well as a heavy lift capacity to install topsides, jackets, and other structures.
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