The latest news from DEME

Foundations done at Borkum Riffgrund 1

29 July 2014, Zwijndrecht - GeoSea has just finalized the installation of 77 foundations on the DONG Energy Borkum Riffgrund 1 offshore wind farm. The installation works, including transport from the fabrication yard to the marshalling harbor, have proceeded in record times and finished ahead of schedule.


The 77 units consisted of monopiles, weighing between 495 tonnes and 684 tonnes and measuring a diameter of 5.9 metres and a length of up to 66m, and transition pieces of weighing around 330 tonnes.

The installation vessel Pacific Orca, supplied by DONG Energy, is currently sailing to Flushing where GeoSea will start the mobilization works for the Suction Bucket Jacket, a new type of foundation also to be installed on the BKR1 field.

GeoSea’s sister company Tideway will continue with the scour protection installation works that are due to be finished soon.

View Borkum Riffgrund 1 Foundation Installation

About GeoSea

GeoSea is a fast growing company specialising in complex offshore marine engineering projects. The company is part of the Belgian DEME Group that is active across the globe. GeoSea has participated in the construction of large-scale offshore wind farms including the Alpha Ventus project, the EnBW Baltic 2 wind farm, the Trianel West Borkum II wind farm in German waters, the Walney wind farms and at the Ormonde farm in the Irish Sea and the C-Power wind farm off the Belgian Coast. GeoSea‘s business also covers more traditional activities such as soil investigation, drilling of large diameter mono piles and high-tech directional drilling. GeoSeo relies on its ability to provide innovative techniques and high operational reliability through high-tech equipment. GeoSea’s jack-up platforms include Innovation (in co-ownership), Neptune, Goliath, Vagant, Buzzard, Zeebouwer, Halewijn, Tijl II, and Kobe. 

About DEME

The Belgian dredging, hydraulic engineering and environmental group DEME has earned itself a prominent position on the world market in a few highly specialist and complex hydraulic disciplines. Having started out with dredging operations and reclamation, the group diversified into hydraulic projects at sea, services to oil and gas companies, the installation of offshore wind farms, environmental activities such as soil remediation and sludge recycling, and revalidation of brownfields and wreck clearance. Its multi-disciplinary know-how and experience, project synergies and integrated business structure allowed DEME to grow into a global solutions provider. The Group owns one of the most modern, high-tech and versatile fleets for dredging and hydraulic engineering activities. DEME employs 4,500 people. In 2013 the Group realised a turnover of EUR 2.5 billion. 

Press Contact

GeoSea - Bart de Poorter - General Manager - T +32 3 250 53 12 -

DEME - Ann Wittemans - Communication Manager - T +32 3 210 67 94 - M + 32 470 88 04 71

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