De Romein Group installs pipelines connecting offshore windfarms to the grid 

De Romein Group is increasingly active in nearshore cable enabling works across Europe. These works often include the installation of HDPE pipelines, which function as ducts to pull HVDC cables through, connecting offshore windfarms to the grid.

In 2023, De Romein Group successfully delivered a 680 m long and 630mm diameter HDPE duct pipeline installation with concrete ballasts and a 2 km marine dredge for the Fécamp offshore windfarm project in France. Using De Romein’s specialist nearshore fleet, which includes the Capall Mara, a 500-tonne backhoe dredger, from which a Liebherr R 984 excavator is operated, a 2-metre-deep trench was dug along the seabed and the pipeline anchored in the trench.

Capall Mara was supported by other vessels including a 120-tonne deck load capacity jack-up barge, offshore rigid inflatable boats (for crew transport) and shallow water work boats. In many of De Romein’s other cable enabling projects horizontal directional drilling is undertaken from the shoreline, to insert the HDPE pipeline ducts to a defined point in the trench. Following the pipeline installation on the Fécamp project, De Romein also successfully carried out the HVDC cable pull installation and marine civil works.

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