Cargo barges available the Polish harbour Gdansk according to a CIA report dated 5 May 1958

An item reported that in the Polish harbour Gdansk several hundred steel covered barges with a length of 100 feet were available, all in good condition. The cargo openings were closed with wooden hatch boards.

Source
The report was published on www.archive.org, document number CIA-RDP80T00246A003600540001-2l