WILK 
- TYPE: Submarine
- DISPLACEMENT SURFACED: 980 t (996 tnes)
- DISPLACEMENT SUBMERGED: 1,250 t (1,270 tnes)
- MACHINERY: Two Screws, Diesel/Electric Motors;
1,800/1,200 hp - LENGTH: 257.5 ft (78.5 m)
- BEAM: 19.3 ft (5.9 m)
- DRAUGHT: 13.75 ft (4.2 m)
- PERFORMANCE SURFACED: 14 knots
- PERFORMANCE SUBMERGED: 9 knots
- ARMAMENT: 6 550mm TT; 1 100mm gun;
40 mines - SURFACE RANGE: 2,500 nm (4,632 km)
- CREW: 54
- LAUNCHED: April 12, 1929