Polish Salvage Organisation (P.R.O.) salvaged pontoon dock near Szczecin according to a CIA report dated 28 July 1954

An item reported that the Polish Salvage Organisation (P.R.O.) since April 1951 among other salvage operations was employed in the salvage of a circa 3.000 tons pontoon dock sunk near Szczecin (Stettin) which was at the moment not completed. The dock was to be scrapped.

Source
The report was published on www.archive.org, document number CIA-RDP80-00810A004300970004-4