The company says it created history in marine and offshore operations when they lifted the 10,000-tonne topside of the first gravity base of the semi-submersible (and world’s largest offshore HVDC platform structure) 'DolWin Beta' to a height of 52.8 metres from the dock bottom. The complex mating operation was carried out on DolWin beta which is under construction at the shipyard. The environmentally friendly system will act as a 900 MW electricity transmission link that will connect offshore wind farms located at the DolWin wind farm area near Helgoland in the German sector of the North Sea.