Some grainy video shows the moment the tanker, identified as the Swiss-flagged MT Leonardo, struck the MV Grande Africa reportedly at about 14:45 p.m.
The tanker is reported to have sustained severe damage in the collision and has been taken to Antwerp. A photo the vessel posted here shows some damage to port side of the tanker.
The MV Grande Africa was not badly damaged in the collision, reports say.
There have been no reports of pollution or injuries.