Installation: Borkum Riff gat

The Project

The Ri gat wind farm installation project was The Wind Farm the  rst project assigned to Bold Tern after her delivery from the shipyard. Installation Riff gat is located 15 kilometres northwest of work began on the 1st April 2013 and lasted the German island of Borkum. The wind farm for approximately 15 weeks with the last covers a total area of 6 square kilometres. At turbine being installed on the 18th July 2013. full power, the wind park will generate 108 MW Bold Tern was the  rst vessel in the world to of renewable energy - enough to power more deliver and install eight complete Siemens than 120,000 homes. Bold Tern sailing with eight WTGs on board SWT - 3.6 120 turbines at a wind farm site in a single deployment. The wind farm is owned by EWE AG and ENOVA Energieanlagen GmbH and developed All turbine components were transported and operated by Off shore Windpark Riff gat at the same time making the installation GmbH & Co. KG. process more effi cient. The component parts were loaded on to Bold Tern in Esbjerg in Comments Denmark. Each consignment included eight fully constructed towers, eight nacelle and Fred. Olsen Windcarrier Project Manager Petter hub assemblies and twenty-four 58.5m blades. Faye Søyland said, “We load and transport the During the course of the installation, signifi cant towers in one piece, saving one lift per turbine time savings were realised. The fastest full both during loading and installation, as well Bold Tern Installing a WTG wind turbine was installed in 10 hours and the as enabling more deck space for turbines. fastest turnaround time was 16 hours - It is And what’s more, by carrying eight turbines neither technically nor operationally feasible to per voyage, we have been able to reduce the safely install turbines at a faster rate than this. number of transit operations and sailing time. After a signifi cant learning curve, turbines are A total of thirty turbines were successfully now being installed in less than 12 hours. installed by Bold Tern using manpower supplied by Global Wind Service, a Fred. There has been great cooperation between Olsen related company. Fred. Olsen related the developer EWE, the turbine manufacturer companies delivered the following scope of Siemens Wind Power and Fred. Olsen work: Windcarrier to ensure that the site is being

GWS technicians at work built safely and effi ciently. Bold Tern and her I Engineering and manufacturing of grillage experienced off shore supervisors, supplied including blade rack by Fred. Olsen related company Global Wind I Turbine transport and installation Service, are doing an excellent job.” I Lift planning I Marine engineering I Off shore construction management I Lift supervision I Off shore HSE representation

Also on site were two Fred. Olsen Windcarrier Bayard service vessels.

Bayard class CTV

www.windcarrier.com