The Maersk Endeavour is a harsh environment jack-up. It was built by rig RSV Gusto in 1982. Maersk Contractors sold the jackup in 2007. The buyer was Northern Offshore Ltd. Bermuda, a company controlled by a large number of foreign investors.
Maersk Contractors continued to operate the rigs on behalf of the new owners until the existing contracts with Maersk Oil & Gas expire in 2008 and 2009 respectively.