"The world's first full-scale floating windmill has reached its final destination, ten kilometres southwest of Karmøy, where it has been moored to the seabed.The next step is cable-laying to land, which is scheduled for July.
...
The floating structure consists of a steel jacket filled with ballast. This floating
element will extend 100 metres beneath the surface and will be fastened to
the seabed by three anchor piles. "
floating windmill

Of course I find this interesting because it's similar in scale to a pipelauncher. I was sort of surprised how apparently easy it is to tow while vertical.

Anyways found out about this from another article which is pretty interesting.

Sean Corcoran's Cape Wind Blog
"The memo indicates that Obama is creating a task force that within 180 days will recommend "a framework for effective coastal and marine spatial planning." What's called The Interagency Ocean Policy Task Force will make recommendations to the president on protecting ocean and Great Lake resources as they experience "growing demands" from "renewable energy, shipping and aquaculture."
...
I've put out calls to the White House, the region's lawmakers and wind groups looking for some clarity, but it sounds like the federal government is looking to zone the oceans for activities and uses. Presumably, "marine spatial planning" would mean specific areas of water would be chosen for things like wind farms, just as towns go through a planning process to decide what types of developments are appropriate for what locations.
http://www.wgbh.org/cainan/article?item_id=4073905

And this was linked from http://www.drudgereport.com/