Russian inland tug Nipru active on the Danube according to a CIA report dated 17 May 1948

An item reported that the one of the most important Russian tugs active on the Danube was the oil-fuelled (ex-Romanian Ziu) Nipru with a displacement of 550 tons, 800hp horsepower and active between Moldova Veche and Komarom.

Source
The report was published on www.archive.org, document number CIA-RDP82-00457R001500460010-8