PROTEUS (N29) 
- TYPE: Submarine
- DISPLACEMENT SURFACED: 1,760 t (1,788 tnes)
- DISPLACEMENT SUBMERGED: 2,040 t (2,072 tnes)
- MACHINERY: Two Screws, Diesel/Electric
Motors; 4,640/1,635 hp - LENGTH: 289.16 ft (88.14 m)
- BEAM: 29.89 ft (9.12 m)
- DRAUGHT: 15.89 ft (4.85 m)
- PERFORMANCE SURFACED: 17.5 knots
- PERFORMANCE SUBMERGED: 8.6 knots
- ARMAMENT: 10 21in TT; 1 3.9in gun
- SURFACE RANGE: 2,300 nm (4,262 km)
at 7.5 knots - CREW: 53
- LAUNCHED: July 23, 1929