PPL Shipyard in Singapore, a subsidiary of Sembcorp Marine, has sold a seadrill jack-up drilling rig to Vietnamese national oil company Vietsopetro.

The ex-West Elara is a Pacific 375 deep drilling design rig and was one of two jack-ups on order for the John Fredriksen-controlled drilling contractor.

PPL exercised its right to take ownership of the rig in October in return for handing back $10.75m or half of the deposit paid up on the rig.

PPL said construction of the rig is in progress with the scheduled delivery in the third quarter of 2010.