Bulgarian Koralovag Shipyard not building reinforced concrete vessels for Yugoslavian navy according to a CIA report dated 13 March 1953

An item reported that that an informant stated that he never heard of any plan for building by the Bulgarian Koralovag Shipyard at Varna of reinforced concrete vessels or constructions for the navy of Yugoslavia.

Source
The report was published on www.archive.org, document number CIA-RDP80-00810A000500330005-5