Butendiek is an offshore wind farm located around 32 km west of Sylt, and consists of eighty wind turbines with a capacity of 3.6 MW each supplying 370,000 households a year with electricity.

In detail...

  • Securing the monopiles on the seabed
  • Delivery of offshore filter material to the fall-pipe vessel from our quarry in Jelsa
  • Delivery of offshore material from our quarry in Larvik
Butendiek offshore wind farm, 32 km west of Sylt


Owner: WindMW GmbH
Customer: Jan De Nul
Construction time: 2014
Construction cost: €1,300 million
Sub contractor: Stema Shipping A/S and Mibau Baustoffhandel GmbH
Delivery quantity: 200,000 tonnes of filter material and riprap
Purpose of use: Scour protection for monopiles