Length: 46 m
Width: 4,75 m
Speed: 9.5 knots in surface, 14 knots underwater
Operational depth: 150 m
Test depth: 300m
Displacement: 530 tons in surface, 590 tons underwater
Engines: 1 electrical propeller engine (900 hp); two Fiat diesel engines (1040 hp) generating electrical power.

Armament: 4 launcher tubes for 533-mm torpedoes; wire-guided electrical torpedoes with auto-guided warhead.
Length: 46 m
Width: 4,75 m
Speed: 9.5 knots in surface, 14 knots underwater
Operational depth: 150 m
Test depth: 300m
Displacement: 530 tons in surface, 590 tons underwater
Engines: 1 electrical propeller engine (900 hp); two Fiat diesel engines (1040 hp) generating electrical power.
Armament: 4 launcher tubes for 533-mm torpedoes; wire-guided electrical torpedoes with auto-guided warhead.
Italian submarine Enrico Toti (S 506)