The superstructure of a Liebherr LTR 11200 crawler crane has been mounted on an offshore jack-up barge for wind farm work. Danish based ship owner DBB Jack-Up Services A/S worked with Liebherr on the mounting of the 1,200 tonne capacity LTR 11200 superstructure to a pedestal on its self-propelled jack-up barge the Wind. The superstructure’s slew ring is mounted to a specially designed pedestal/column that is integrated into the structure of the ship. DBB has used Liebherr mobile cranes for service work on its land based wind power installations for a number of years. So when it needed a crane to service its offshore contracts it turned to Liebherr Ehingen for a solution. The result is the largest telescopic crane ever mounted on a barge. DBB says that the advantage of a telescopic crane is its smaller space requirements compared to lattice boom cranes and the lower centre of gravity of the crane thanks to the fact that the boom can be completely retracted. These advantages make it possible for a substantial hook height to be achieved from a relatively small barge.
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