The 19.7 meter long tugboat Commando and the 17 meter long sailing vessel Sera sank on the Oude Maas near the Botlek Bridge at Hoogvliet. The Commando was towing the Sera to a shipyard in Numansdorp when both vessels sank. There was no one on the Sera, but the 2 crew on the Commando found themselves in the water. A passing boat rescued the two crew. Reports do not state which vessel sank first, but the assumption was the Sera was in poor condition and sank first and pulled the Commando down. No reports of injuries. Authorities dispatched a response team and divers to the scene.