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

An item dealing with the Danube shipping movements reported that on 19 February 1955 was sighted on the position DKM 1823 the Bulgarian tug ms Lom while towing with grain loaded barges towards Bratislava. Czechoslovakia. On the 21st was she sighted on position DKM 1758 with loaded barges going downstream.

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