According to UK MAIB, the 52,000 dwt container ship ANL Wyong and the 5,312 dwt tanker King Arthur collided while they were about 4 miles south east of Gibraltar.
Both vessels suffered damage, but no injuries or pollution were reported.
When the ships collided, ANL Wyong was heading to the Port of Antwerp, while King Arthur was going to the Port of Rotterdam. Currently, the container ship is moored at the port of Campamento, with the LPG tanker anchored in the Gibraltar West anchorage.
UK MAIB will initiate an investigation into the incident.