Russian inland tug Regele Ferdinand 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 Regele Ferdinand with a displacement of 120 tons, 2 oil fuelled engines and 1.200hp horsepower and active on the Dniester River.

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