The Soviet motor tug Charitonlapdev active on the Danube according to a CIA report dated 10 June 1955

An item dealing with the Danube shipping movements reported that on 20 February 1955 was sighted on the position DKM 1743 the Soviet tug ms Charitonlapdev while towing loaded barges upstream.

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