Starting at the end of August, Deutsche Offshore Consult GmbH (DOC) will commence construction supervision for the inner array cable installation at the North Sea wind farm Trianel Windpark Borkum II.

DOC is working on behalf of Trianel Windkraftwerk Borkum II GmbH & Co. KG. Twelve to fourteen representatives with many years of experience in offshore wind will be deployed for the project to provide the best possible support for the customer during cable laying, pull-in and termination & testing at the communal offshore wind farm.

Thirty-two Senvion 6.2 M152 offshore wind turbines, each with an output of 6.33 MW, will be installed at Trianel Windpark Borkum II (TWB II). The wind farm is located approximately 45 kilometers north of the island of Borkum and will have an output of 200 MW. TWB II is located in the direct vicinity of the offshore wind farms MERKUR Offshore (396 MW) and alpha ventus (60 MW). The first phase of Trianel Windpark Borkum with 40 wind turbines and an output of 200 MW has been in operation since summer 2015.

DOC's current task of supervising the construction works at TWB II with a focus on the inner array cable installation will start with cable loading and the necessary preparatory work for the cable pull-ins at the substation as well as on board the cable laying vessel Seaway Aimery. The subsequent cable laying and burial works will then be carried out by Seaway Aimery and Seaway Moxie. The cabling consists of a total of four loops. The inner array cables are magnetized so that they can still be located once they have been laid and buried.

Quality assurance and communication with the project office on land are also part of DOC's work package. Installation and commissioning of the wind turbines at TWB II is scheduled to be completed by the autumn of 2019. EWE AG is involved in the communal offshore project, as well as a joint venture of the Zurich city power station and the public utility cooperation Trianel together with 17 municipal utilities in Germany.

"Supervision of cable production and wind farm cable installations is one of DOC's core competencies, and we are happy that the joint venture Trianel Windkraftwerk Borkum II selected us for this task," said Oliver Spalthoff, Managing Director of Deutsche Offshore Consult GmbH.

Irina Lucke, Technical Director of Trianel Windkraftwerk Borkum II GmbH & Co. KG, welcomes the construction supervision of the inner array cabling by DOC, saying, "The inner array cabling is the nerve system of the wind farm. A high level of competence and excellent quality assurance is crucial. We are pleased to have DOC by our side as a reliable and highly specialized project partner."