INSTALLATION OF THE DOLWIN6 PLATFORM
Monday September 5, 2022
Dragados Offshore is glad to announce that the offshore converter station of TenneT’s DolWin6 offshore grid connection system is now successfully installed at its final destination 45 kilometers off the coast of Lower Saxony in Germany.
After only three years of construction in Dragados Offshore shipyard in Cádiz, Spain, the platform was shipped to Rotterdam on board the transport barge “Iron Lady” at the beginning of August. From there, it was transferred onto the world’s largest service vessel, Allseas’ 382-metre-long “Pioneering Spirit”, which took the platform, including topsides, jacket, bridge and piles to the installation site in the German North Sea.
Once there, the foundation structure, which is almost 44 meters high and weighs more than 5,000 tons, was set down. Then ten piles were driven up to a depth of 68 meters into the seabed and connected to the foundation structure. Then the Pioneering Spirit placed the approximately 11,000 ton topside on the foundation structure. Combined, both have a total height of around 82 meters, so the platform protrudes around 53 meters above the water surface of the North Sea.
The contract is considered a major milestone for Dragados Offshore as it strengthens our activities into platform delivery for the offshore wind industry by performing a project at the forefront of its sector, and continues to consolidate Dragados Offshore’s leading position in the renewable offshore energy market. We thank our partner Siemens Energy for their cooperation and also thank our client TenneT for trusting us in this challenging project.
The commissioning phase is planned to be completed in 2023 and will provide green wind power to over 1 million households.