Dogger Bank Wind Farm: Completing a 328km Offshore Cable Network

The construction of the world’s largest offshore wind farm has reached a significant milestone with the successful installation of more than 200 miles (328 km) of 66KV inter-array cables. This marks the completion of the inter-array cable network for the first phase, Dogger Bank A, which began generating power in October 2023.

The intricate process of laying these cables was executed by a skilled team of engineers and the design team using specialized vessels. The Viking Neptun was instrumental in the initial cable laying, while the Living Stone completed the burial works. This phase involved deploying 95 cables of varying lengths, up to 8.6 miles, to connect Dogger Bank A’s 95 Haliade-X 13MW turbines to the offshore converter station. Here, the electricity is converted into direct current for transmission to the onshore converter station via an advanced HVDC system.

The cable laying required precision and careful planning. Utilizing a carousel and tensioner device, the cables were deployed over the stern chute of the vessel and onto the seabed. Each cable was then connected to the offshore platform and individual wind turbines. To prevent damage, the cables were buried using a cable burial tool or trencher, tailored to the seabed’s conditions.

This complex engineering feat followed an intensive preparation period, which included underwater surveys to ensure a clear cable laying corridor. The successful installation of these cables is a testament to the dedication and expertise of the engineering team. Alan Evans, Dogger Bank Wind Farm Marine Package Manager, praised the collaboration between all parties involved, emphasizing the significance of this achievement in the overall project.

Geert Linthout, Project Director, highlighted the seamless execution and strong performance of the installation vessels, Viking Neptun and Living Stone. This milestone lays a reliable foundation for the upcoming Dogger Bank B and C phases, continuing the strong partnership and setting new standards in offshore wind energy projects.

Overall information on the remarkable Dogger Bank project can be found here, and for the progress on Dogger Bank B here.