Danish marine contractor Peter Madsen Rederi has completed essential scour repair works at an unnamed offshore wind farm in the North Sea.
The scope of work included provision, handling and installation of stones at several positions at the wind farm, where scour had developed due to the dynamic seabed conditions, the company said.
Peter Madsen Rederi said the work was carried out in challenging conditions, including adverse weather, tidal movements and the requirement to work closely to installed structures and live cables.
This “meant that great care had to be taken both in the planning and execution phase”, the company said.
Several vessels from the company’s fleet of work vessels equipped with either backhoe or wire crane excavators were used for the work.
The vessels are fitted with advanced positioning and monitoring systems and with spud legs they are particularly well suited for shallow water or tidal locations where position stability is essential, it said.
Peter Madsen Rederi chief executive Michael Normann said: “This project is an important reference for us. We have demonstrated that we can offer the O&M market a solution where safety, accuracy and cost efficiency are paramount.”
The company has worked on more than 25 offshore wind farms in Denmark, UK, Germany, Sweden, the Netherlands and France.
The work has included boulder clearance, installation and repair of scour protection, nearshore trenching and backfilling, installation and repair of stone beds, seabed levelling, ballasting of foundations, dredging and multibeam surveying.