Vitol is bolstering its owned fleet with an order for a series aframax product tankers that will run on conventional fuels, amid talks for another batch of dual-fuel ships.

The energy and commodity trader is poised to spend more than $500m to order up to eight vessels.

Shipbuilding sources said the trader has kicked off its fleet expansion with a deal at Hyundai Mipo Dockyard (HMD) in South Korea for four 115,000-dwt product tanker newbuildings.