A milestone was reached this weekend at Parkwind’s Arcadis Ost 1 offshore wind farm when DEME Offshore installed its latest XXL monopile in the Baltic Sea off Rügen. This was the first project executed by DEME’s new floating installation vessel Orionwho installed the foundations using his DP3 system.
The 28 XXL monopiles are the largest monopile foundations installed, weighing more than 2,000 tons each, and having a diameter of 9.5 m and a length of up to 110 m.
Parkwind’s Arcadis Ost 1 project in the Baltic Sea is located northeast of the Kap Arkona cliffs in the 12 NM zone of Germany with water depths of up to 45 m and difficult ground conditions . It will receive its 27 Vestas V 174 9.5 MW wind turbines later this year and will produce green electricity to power up to 290,000 homes.
Orion was running on LNG during the installation campaign and is equipped with a 5,000 ton crane and a motion compensated pile gripping system capable of handling large XXL monopile foundations. The integrated motion-compensated pile gripper tool allows the crew to overturn and drive the monopiles, which are transported horizontally across the deck. Combined with the vessel’s DP3 capability, the motion compensated clamp keeps the monopiles vertical and stable despite waves and vessel movement.
In addition, a whole set of new specialized tools were used during this inaugural project to Orion. These tools include an adjustable monopile overboard system, a newly built automated monopile lifting spreader bar to allow horizontal lifting of XXL monopiles, automated quick lifting tools to avoid manual handling on deck as well as several new lifting systems. noise attenuation.
Arcadis Ost 1 is a 257 MW offshore wind farm developed in German territorial waters in the Baltic Sea, northeast of the island of Rügen. Arcadis Ost 1 was developed by Parkwind with the participation of PMV and OstseeWindEnergie GmbH, a project company of the three partners Oberhessische Versorgungsbetriebe AG, Stadtwerke Bad Vilbel and WV Energie AG. The wind farm will be operational in 2023.