TEHRAN — A Tanzanian cargo ship sank Tuesday in a jetty in the southern Iranian port of Assaluyeh, reports said. 

The official IRNA news agency said the vessel named Anil overturned because containers on it were configured incorrectly at the port’s dock No. 9. The port has more than two dozen piers. IRNA said rescue teams transferred the ship’s crew to safety. The port is the main hub for shipment of gas and petrochemicals produced in Iran and is located about 940 kilometers south of the capital Tehran.