Norway's Dof group has fixed and extended contracts for four offshore vessels.

It said the 3,900-dwt platform supply vessel (PSV) Skandi Sotra (built 2003) had won a 75-day deal from Chevron Australia.

The contract, which starts in the fourth quarter, also comes with options for further periods.

Dutch operator Fugro has stretched the firm contract for the 3,500-dwt support ship Skandi Olympia (built 2009) in the North Sea until end September 2018.