Siemens has installed the HelWin1 offshore platform in the North Sea. HelWin1 will link the two offshore wind farms Nordsee Ost and Meerwind to the mainland. After seven days of transport at sea and four days of installation on site, the HelWin1 platform was anchored at its final position northwest of the island of Helgoland on August 23.
Siemens had installed the platform’s support substructure at this location in June in the 23-meter-deep North Sea. Ten steel pilings with a length of up to 100 meters and up to 3.2 meters in diameter and with a wall thickness of eight centimeters were anchored in the seabed for attachment of the structure. The platform is installed 22 meters above sea level to protect it against giant waves. HelWin1 is designed for decades of operation in the rugged North Sea. Up to 100 employees will be active on the platform for the subsequent project phase in the North Sea. The commissioning of HelWin1 is scheduled for the second half of 2014.