Wind Energy – Inter Array Cables
The first stage of seabed preparation in the Baltic Sea for cable installation has been completed for the Baltica 2 offshore wind farm.
The BOKA Falcon vessel, operated by Boskalis, has prepared 150 km of routes for inter-array cables, which will connect the turbines to the offshore substations. The next stage will include laying out a 260-kilometre route for export cables.
The works preceding cable installation follow a coherent sequence — from investigating ground conditions, through clearing the corridor, to trenching for the cables, enabling their subsequent installation and protection.
The works began with geotechnical surveys along the planned cable routes. Contractors then checked the area for unexploded ordnance — a prerequisite for continuing operations within the cable corridor. No such objects were found along the planned routes.
The next stage involved removing large boulders (up to 2 metres) from the inter-array and export cable routes. Using the T-Rex plough, the BOKA Falcon vessel cleared the cable corridors, preparing the routes for cable trenching.
At the end of 2025, cable trenching began using the Megalodon plough. This prepared the seabed so that, after installation, the cables can be laid correctly and protected. The completed part of the campaign covered 150 km of inter-array cable routes.
The next stage will include preparation of the 260 km export cable route, ahead of installation to be carried out later by the Ndurance and Boka Ocean vessels, also operated by Boskalis.
