Pantheon Tankers is in advanced talks to order up to four aframaxes at Shanghai Waigaoqiao Shipbuilding (SWS), in what would be its first newbuildings in China.

The Greek shipowner declined to confirm reports that it has signed a letter of intent, and the shipyard could not be reached for comment.

The order would be for two firm and two optional vessels at SWS at about $44.8m