The Matador 3

This enormous floating crane, with the tug which moves it, is currently lying alongside the timber wharf in Millbay Docks, at the western end of the waterfront in Plymouth. It can be used for an enormous range marine activities, including the construction of giant offshore windmills, for power generation.

You can see the full details of her specifications and massive lifting power here

This view gives a idea of her true size.