The Soviet CSPD motor tug Kysuca active on the Danube according to a CIA report dated 29 June 1955

An item dated 7 May 1955 reported the Soviet CSPD (Sovietskoye Dunaisk oye Gosudarstvennoye Parokhodstvo) motor tug Kysuca on the Danube off DKM 1710 while towing empty barges and tankers downstream .

Source
The report was published on www.archive.org, document number CIA-RDP80-00810A007200560007-7