Ecosse gets all-clear for Westermost

Dong Energy has tapped Ecosse Subsea Systems to clear seabed cable routes for the £800m ($1.35m) Westermost Rough wind farm in the UK North Sea.

The Scottish contractor expects to clean up as many as 35 lay routes for array lines at the 210MW development, which will cover 35sq km off the eastern coast of England.

Ecosse will use its Scar boulder clearance system, mounted on the anchor-handling vessel Havila Jupiter, assisted by underwater robots.

“This contract follows on the completion of successful field trials on Westermost Rough," says Ecosse Subsea Systems commercial director Keith McDermott.

“Our technology has a proven track record in providing speedy, accurate and cost-effective seabed clearance operations and this was a key factor in the contract award."

The technology has previously been used for seabed clearance campaigns on Humber Gateway off the UK and the Germany's Baltic 2, following a test run off Scotland's Shetland islands, where it cleared a 67km long, 10-metre-wide route in six days, removing thousands of boulders up to two metres across.

Westermost Rough's 35 Siemens 6MW SWT-6.0-154 turbines will be brought on line next year.