Polish navy just coastal defence tasks according to a CIA report dated 4 May 1953

An item reported that the Polish fleet had as main task the coastal defence limited as she was by lacking ships suitable for offensive purposes. The destroyers and submarines she possessed were obsolete and just suitable for training purposes. The other ships were used for minesweeping or minelaying and for police patrol tasks. This was not to be changed in the near future.

Source
The report was published on www.archive.org, document number CIA-RDP80-00809A000500030183-3