CRANES AND CARGO HANDLING
LANS to construct a crane ship with a lifting capacity of more than 1250tonnes took a step closer to reality in late 2005 following A2Sea's acquisition of Sea Installer. The company specialises in construction of offshore wind farms and, once converted, will use the new vessel to transport up to six 5MW turbines to offshore sites and install them. The ship's 1250tonne capacity pedestal- mounted Liebherr or Demag crawler crane upper will have to be mounted further aft than on A2Sea's existing two ship cranes to allow the boom to be stowed in transit. Sea Installer already has two 63tonne hydraulic deck handling cranes and built-in pumps capable of pumping in up to 2000tonnes of water for ballast.
Conversion includes 1250tonne crane P
Other conversion work will include lengthening of the hull from 105m to 140m, widening the beam from 20m to 32m, together with the fitting of sponsons, jack-up legs, dynamic sensing, and accommodation units. According to A2Sea, the standard jack-up legs will allow the crane to operate in water depths up to 35m but these can be extended by another 10m for working in deeper water. The vessel is currently in Singapore. Although no shipyard has yet been selected for the conversion work, A2Sea expects the ship to enter service some during 2006.
An impression of Sea Installerin her working mode and showing one possible version of the crane that she will carry. The vessel is set to be converted to allow the transport and installation of six wind turbines.
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A main priority of Dreggen is to provide our clients with the benefit of cost effective
solutions.Companies in a wide range of engineering sectors have selected Dreggen to be their supplier of solutions concerning material handling and crane technology.
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1.Monorail provision crane. 2.Engine room crane/service crane.
3.Ship Board Gantry crane SBG
4020.py 4.Combined lifesaving and provision crane. 5
5.Hose handling crane/deck crane. 5
DREGGEN CRANE A.S., P. O. Box 3434, N-5815 Bergen - Norway Phone.: +47 55 33 36 50 Fax: +47 55 33 36 51
E-mail:
mailbox@dreggen.no Web address:
http://www.dreggen.com 72 THE NAVALARCHITECT FEBRUARY 2006
Reklame Partner +47 5590 2280
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