After successful supply and installation of the dynamic submarine export cable for the Hywind Demo project in Norway in 2009, Nexans was awarded in January 2016 for the supply of the export and infield submarine cable systems for the Hywind Scotland Pilot Park Project. The scope included the engineering and supply of the dynamic and static submarine cables, together with the associated accessories (electrical & mechanical accessories to achieve the dynamic configurations of the 9 risers). The project was initiated with a phase of detailed design engineering, where numerous complex simulations were executed, amongst other the dynamic analysis including fatigue, extreme and interference analysis, thermal analysis, etc.

These analyses were performed in order to verify the shape of the dynamic configuration, the cable designs at various points including the landfall and the entrance to the floater, and to collect the specific data to achieve the detailed engineering of the dynamic accessories. The cable load-out was completed as planned in end of July 2017, followed by the cable installation performed by Subsea 7.

The presentation will give an overview on the entire dynamic and static submarine cable system, including an insight on the design of the submarine cables and a description of all the accessories for this project, where numerous innovations were performed, such as the development of a weak link hang-off, pre-terminated pulling head, etc. Providing acceptance of Subsea 7, a presentation of the cable laying operation will also be displayed.