DOF Group has struck an agreement to take over Maersk Supply Service for $1.1bn in cash and new shares.
The deal marks a major shift for DOF, which had been a takeover target for vocal offshore consolidator Kristian Siem and has changed from being the hunted to becoming the hunter.
It will now have Robert Maersk Uggla, John Fredriksen, Arne Blystad and Siem among its notable shareholders.