An item reported that after 1 May 1953 was added to the fleet of the East German Deutsche Schiffahrts- und Umschlagsbetreibe (DSU) and stationed at DSU-Berlin the open tug with as number 481 and capacity of 270 tons.
Source
The report was published on www.archive.org, document number CIA-RDP81-01036R000100070044-6
