Shipowners Filippos and Andonis Lemos have doubled their suezmax tanker newbuilding orderbook at Daehan Shipbuilding.

Lemos family company Enesel returned to the suezmax sector last year with a two-ship deal at the South Korean yard and has now taken two options linked to that contract, sources say.

The deal marks the latest in a line of tanker fleet-renewal moves by the brothers, who have been selling older ships and investing in modern, fuel-efficient units at a time when new regulations and technology are changing the market.