Construction of a single turbine tower was completed in January 2012.

Each turbine tower would rest on a single piling about 18 feet in diameter, sunk between 70 and 120 feet into the ocean floor.

Mr. Zaweski said each turbine tower would be supported by a thick-walled steel tube with a 15-foot diameter hammered 70 to 80 feet into the sea floor.

The turbine towers would be 260 feet high with blades reaching more than 400 feet high and visible from the shore.

Each turbine tower is 217 feet high, with blades 77 feet long, and a generating capacity of 660 kW.

The parish skyline, on the ridge to the south of the A59, is now dominated by the eight 58 m wind turbine towers of the "Knabs Ridge" windfarm.

All produced energy is converted into direct current DC by a rectifier inside the nacelle and conducted to the inverters located in the bottom of the turbine tower.

Each turbine tower is 166 feet (50 m) tall, with blades 76 feet (23 m) wide.

The reduced wind shear over water means shorter and less expensive wind turbine towers can be used in shallow seas.

This was the first incident of an operational turbine tower collapsing in the UK.