Singapore’s Pacific Carrier Ltd (PCL) is seeking to expand its tanker fleet with an order for product tankers.

The company has been linked to a three-ship order at STX Offshore & Shipbuilding, although doubts have emerged over the South Korean shipyard group's ability to secure refund guarantees from main shareholder Korea Development Bank.

Shipbuilding sources said Kuok group-controlled PCL has signed up for three 50,000-dwt MR tankers at the yard for delivery in early 2020.