COSCO Shipping Specialized Carriers has completed the transport and float-over installation of an offshore converter platform for the Qingzhou V & VII offshore wind project, a key milestone in what the company described as the world's first 2 GW offshore high voltage direct current (HVDC) transmission system.The converter platform, weighing about 25,000 tonnes, is among the largest offshore structures installed for the offshore wind industry and was transported and installed using…