The Hungarian Meszhart steam tug Bihar active on the Danube according to a CIA report dated 10 June 1955

An item dealing with the Danube shipping movements reported that on 24 February 1955 was sighted on the position DKM 1893 the Hungarian Meszhart tug ss Bihar while towing barges loaded with grain upstream. On 2 March was she sighted off Vienna, Austria while towing barged loaded with grain towards Budapest, Hungary.

Source
The report was published on www.archive.org, document number CIA-RDP80-00810A007000090002-6