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As of 30th June 2013, according to the European Wind Energy Association, there are 1,939 offshore wind turbines, with a combined capacity of 6,040 MW. They are fully grid connected in European waters in 58 wind farms across 10 countries. About 70 % of the foundations used for wind energy are monopiles with a diameter up to 6 m. The monopiles are installed by using hammers. However, there are situations...