The high speed steam barges of the Czechoslovak Elbe Navigation Company according to a CIA report dated 30 July 1951

An item reported that the Czechoslovak Elbe Navigation Company, Prague, Czechoslovakia operated the high speed steam barges Ohre, Sazava, Vltava, Berounka and Jizera with a crew numbering 7 men and a tonnage varying between 450-500 ton.

Source
The report was published on www.archive.org, document number CIA-RDP82-00457R008200260013-3