"world’s first floating wind turbine power generators...The turbine and its platform are to form part of an experimental, floating power sub-station...is expected to produce 2 megawatts of electricity, enough to power around 600 homes. ...mounted on a 32-meter steel submersible structure...The rig is to be attached to the seabed by iron chains at a site around 20 kilometers off the coast of Fukushima Prefecture on around July 20"
Source:
World's first floating wind turbine arrives in Fukushima
Japan Today
July 3rd, 2013