Entering Devonport.

Dimensions:
Length: 47,2 meters
Beam: 4,7 meters
Drought: 8,9 meters

Displacement:
Surface: 430 tons
Dived: 459 tons

Armament:
8 torpedo tubes 537 mm

Other data:
Max surface speed: 12 knots
Max dived speed: 18 knots

Tasks:
Anti-surface warfare
Anti-submarine warfare
Reconnaissance
Surface ships defense and protection
Sea lanes of communication protection and defence
Special forces transport

Data from Polish Navy Website.
www.navy.mw.mil.pl