A total of 72 monopiles were transported floating from Rostock, Germany, directly to the offshore site. The transition pieces were transported on barges from Aalborg, Denmark. Vattenfall awarded the transport and installation of the foundations for Kriegers Flak offshore wind farm to Van Oord.
The Svanen installed all of the monopiles ahead of schedule. During execution all safety and COVID-19 restrictions were in place, creating a safe work environment for those involved. Van Oord's fleet for this project consisted of 10 vessels, in order to carry out all works.
To reduce the underwater noise a ‘double big bubble curtain' was used during pile driving. The project team worked closely with Vattenfall and foundation suppliers EEW Group and Bladt Industries to deliver this project.
"With the last foundation successfully installed, one of the most important milestones in the success of the Danish Kriegers Flak wind farm is achieved. The Svanen and the associated fleet have delivered excellent results. We are very pleased with the cooperation and continuous good spirit," said Ian Bremner, project director Vattenfall.
With a production capacity of just over 600MW, Kriegers Flak will be Denmark's largest offshore wind farm and is scheduled to be fully operational in 2021. When the wind farm is in full production, it will increase the yearly Danish electricity production from wind by 18 per cent equivalent to roughly 600,000 Danish households' annual electricity consumption.
The wind farm is being constructed in the Baltic Sea and will be located between 15 and 40km from the Danish coast.