Bluestream to Perform Remedial Campaign at Two German Offshore Wind Farms

Vattenfall and Stadtwerke München have awarded Dutch company Bluestream Offshore, an OEG Renewables business, a contract for a remedial campaign on the DanTysk and Sandbank offshore wind farms in the German North Sea.

Bluestream will provide specialist subsea and topside services for the remedial campaign which will run for around 35 days. The work includes the replacement of Impressed Current Cathodic Protection (ICCP) systems that prevent corrosion in the metal structure of the turbine foundation and tower, replacement of various reference cells, debris removal and sonar transponder exchanges.

The company will charter the Go Electra multi-purpose service vessel with air dive spread and a Seaeye Tiger observation class remotely operated vehicle (ROV) to carry out the work.

Rutger Lieverse, Commercial Manager of Bluestream, said: “We are delighted to be working with Vattenfall on this important remedial campaign delivering our specialist subsea and topside services, leveraging our significant experience managing inspection and maintenance campaigns in these types of shallow water offshore environments.”

Located west of the island of Sylt, DanTysk and Sandbank offshore wind farms each have a generation capacity of 288 MW.

DanTysk offshore wind farm comprises 80 Siemens Gamesa 3.6 MW turbines that have been in operation since 2014. Sandbank offshore wind farm, which has been in operation since 2016, has 72 Siemens Gamesa 4 MW turbines.

Earlier this year, Acta Marine’s service operation vessel (SOV) Acta Centaurus started a service campaign at the DanTysk and Sandbank offshore wind farms which is expected to last until October 2024.