Shipbuilder Ulstein Group and SeaOwls have unveiled what they say is a pioneering heavy-lift jack-up vessel design for developing wind farms.

The cruciform layout makes the ship more than 10% lighter than conventional designs, the companies claimed.

They hope to install next-generation 10-12MW wind turbines in the same time it takes for 6-8MW units now.

“The development of this novel jack-up vessel is the logical next step in our strategy to widen our portfolio and become a leading company in supporting the offshore wind industry with more efficient assets,” said Tore Ulstein, deputy CEO at Norway's Ulstein.

“Combining