The so-called suction-bucket jacket, fitted with cylindrical-shaped feet that are pulled down into the seabed by a system of high-pressure pumps, was to have sailed out yesterday to the 312MW wind farm now under construction off the island of Borkum, but poor weather delayed the launch.

The 850-tonne steel structure, which stands 57-metres tall, will be installed in 24-metres of water by Swire Blue Ocean's Pacific Orca jack-up unit and topped with an upscaled SWT-4.0-130