The Hungarian Mahart steam tug Matra (ex-Szilighet) active on the Danube according to a CIA report dated 29 June 1955

An item dated 9 May 1955 reported the Hungarian Mahart (Magyar Hajozasi Reszvenytarsasag) steam tug Matra (ex-Szilighet) on the Danube off DKM 1907 while towing loaded tankers downstream.

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