FLUTTO 
- TYPE: Submarine
- DISPLACEMENT SURFACED: 958 t (973 tnes)
- DISPLACEMENT SUBMERGED: 1,170 t (1,189 tnes)
- MACHINERY: Two Screws, Diesel/Electric
Motors - LENGTH: 207 ft (63.2 m)
- BEAM: 23 ft (7 m)
- DRAUGHT: 16 ft (4.9 m)
- PERFORMANCE SURFACED: 16 knots
- PERFORMANCE SUBMERGED: 7 knots
- ARMAMENT: 6 533mm TT
- SURFACE RANGE: 3,200 nm (5,297 km)
- CREW: 50
- LAUNCHED: November 1942