Norwegian investor Frederik Mohn has teamed up with a US private equity firm to buy an unwanted newbuild drillship ordered by John Fredriksen’s Seadrill at Daewoo Shipbuilding & Marine Engineering (DSME).

The tie-up between Mohn’s investment vehicle Perestroika and Lime Rock Partners has agreed to pay $200 million for Hull No 3623, formerly known as the West Aquila.

Drilling rig giant Transocean on 17 November said it had made a $15 million non-controlling investment in the joint venture, which is called Liquila Ventures.