The Bragadin-class submarines were built for the Regia Marina (Royal Italian Navy) during the late 1920s.

The Bragadin-class submarines were essentially minelaying versions of the earlier Pisani class.

[1] For surface running, the boats were powered by two 750-brake-horsepower (559 kW) diesel engines, each driving one propeller shaft.

On the surface, the Bragadin class had a range of 4,180 nautical miles (7,740 km; 4,810 mi) at 6.5 knots (12.0 km/h; 7.5 mph), submerged, they had a range of 86 nmi (159 km; 99 mi) at 2.2 knots (4.1 km/h; 2.5 mph).

In the stern were two tubes which could accommodate a total of 16 or 24 naval mines, depending on the type.