Major works ordered for offshore wind farms

Dan Tysk and Sandbank, jointly owned by Vattenfall and German energy firm Stadtwerke München, each generate 288MW of power from 90 kilometres off the coast near the Danish border. 

Dan Tysk, with 80 x 3.6MW turbines, was commissioned in 2012, and Sandbank, with 72 x 4MW turbines, started producing power in 2017.

For 35 days, Bluestream will be coordinating subsea and topside services to replace Impressed Cathodic Protection systems that prevent corrosion in the metal turbine foundations and towers; replace reference cells and sonar transponders; and remove debris.

“Bluestream will leverage our experience and capabilities in operating with divers and rope-access specialists on offshore energy infrastructure,” says the firm. “Bluestream will charter the Go Electra multi-purpose service vessel with air dive spread and a Seaeye Tiger observation class ROV to deliver the scope with a focus on safety and quality a core priority.”

The two wind farms and another nearby one also jointly owned by Vattenfall, Horns Rev 1, all share the same vessels, infrastructure and facilities, managed from the service harbour in Esbjerg, Denmark.