The Very Large Crude Carrier (VLCC) Olympic Lyra changed its destination to Lome in Togo from Southwold in Britain, Refinitiv ship tracking data showed.
VLCCs have a capacity of around 300,000 tonnes and their arrival in a region can affect refining margins.
The Olympic Lyra, sailing from Asia, was supposed to arrive in Britain around May 7, but the shipping data now shows an estimated time of arrival in Lome on April 25.
VLCCs often carry refined, or clean, oil products on their maiden journey before switching to crude oil or fuel oil.
Reporting by Shadia Nasralla