John Fredriksen's DESS Aquaculture Shipping has continued to expand its fleet with new orders in Turkey and the Netherlands.

The joint venture between Oslo-listed OSV owner SolstadFarstad and Marine Harvest, Fredriksen's seafood company, has signed up for two more 3,500-cbm wellboats at the Sefine yard in Turkey, which is already building two sisterships.

Marine Harvest will charter them for seven years.