The training vessel Iskra of the Polish navy according to a CIA report dated 4 May 1953

An item reported that the Polish Navy possessed before the outbreak of the Second World War on 1 September 1939 and still in service over the training vessel Iskra with a displacement of 560 tons.

Source

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