Hungarian built tugs underway towards the Dnjepr, Soviet Union according to a CIA report dated 14 June 1954

An item reported that on 4 May 1953 two sidewheel steam tugs were sighted on the Romanian part of the Danube, one was called Valerian, the name of the other was unreadable in the text. Apparently the ships built at the Obuda shipyards near Budapest, Hungary for the Soviet Union to serve on the river Dnieper. Their dimensions were around40 x 16-18 x 1,20 (height above the water). Steel built and welded and amidships a bridge and aft the bridge one funnel. Horsepower 450hp. Hungarian sailors brought the ships to their destination and flying a Soviet flag from the stern. On 22nd May was a similar tug seen at Turnu-Severin named something like Aserhinij and in June the Smolensk and Sveralosk or Sverdlovsk.

Source
The report was published on www.archive.org, document number CIA-RDP80-00810A004201270005-0