Germany The construction of Vattenfall’s 288MW offshore wind farm Sandbank in the North Sea is progressing well. Almost all 72 foundations are now in place and the installation of the turbines is scheduled to start in the summer.

The offshore construction work commenced last summer and by now 69 out of the 72 foundations, each consisting of a monopile and a transition piece, have been installed. 

Rough weather conditions in November and December with almost 12-metre waves prohibited offshore works most of the time.

The installation of the 4MW turbines will commence in the summer. The cable work has already started and two lines of cables have been installed.

Sandbank’s substation with its heli deck has been assembled and will be installed on site during the spring.

Net with plastic components

During the installation of the foundations a Hydro-Sound-Damper – consisting of a net with plastic components – was used in order to reduce the underwater noise. A “bubble curtain” around the foundation during hammering was also used.   

Bubble curtain

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