The accident involving the18,300-dwt tanker Mar Elena 1 (built 2003) happened in the earlyhours of Tuesday, German media reported.
The barge, Ella, sufferedwater ingress in the engine room and foreship. It was towed to aquayside and secured by a police launch.
The cargo of wheat waslightered and fire crews pumped water out.
Mar Elena 1 was headingfrom Kattwyk to Oxelosund.
