UTRECHT, The Netherlands — A combination of three Dutch offshore companies realized a unique operation in the North Sea, installing a giant “power socket,” the SylWin alpha platform. Siemens commissioned Seaway Heavy Lifting to perform an unusual operation that in turn called in the assistance of maritime service provider Dockwise and engineered heavy lifting and transport specialist Mammoet.
Weighing 14,000 metric tons, the 83-meter long, 56-meter wide and 26-meter high SylWin alpha platform, built by Siemens, is the largest in its kind. As it exceeds the lifting capacity of floating cranes, the “float-over method” was applied to move it from a pontoon onto the already installed “jacket” (the base of the platform).
Mammoet used strand jacks to lift the platform up to its final position on the jacket. Customized for this project, Mammoet devised a timesaving method that allowed fast installation and removal of the strand jacks, which saved nine days.
For more information, visit www.mammoet.com or call +31 (0) 88 6502 333.
