Ammiraglio di Saint Bon-class battleship

Ammiraglio di Saint Bon
Class overview
Name	Ammiraglio di Saint Bon class
Operators	Regia Marina
Preceded by	Re Umberto class
Succeeded by	Regina Margherita class
Built	1893–1902
In commission	1901–1920
Completed	2
Retired	2
General characteristics
Type	Pre-dreadnought battleship
Displacement	Normal: 10,082 long tons (10,244 t) Full load: 10,531 long tons (10,700 t)
Length	111.8 m (366 ft 10 in)
Beam	21.12 m (69 ft 3 in)
Draft	7.69 m (25 ft 3 in)
Installed power	12 × fire-tube boilers 14,296 ihp (10,661 kW)
Propulsion	2 × triple-expansion steam engines 2 × screw propellers
Speed	18.3 knots (33.9 km/h; 21.1 mph)
Range	5,500 nmi (10,200 km; 6,300 mi) at 10 knots (19 km/h; 12 mph)
Complement	557
Armament	4 × 254 mm (10 in) guns 8 × 152 mm (6 in) guns 8 × 120 mm (4.7 in) guns 8 × 57 mm (2.2 in) six-pounder guns 2 × 37 mm (1.5 in) guns 4 × 450 mm (17.7 in) torpedo tubes
Armor	Belt and side: 249 mm (9.8 in) Deck: 70 mm (2.75 in) Turrets: 249 mm (9.8 in) Conning tower: 249 mm (9.8 in) Casemates: 150 mm (5.9 in)

The Ammiraglio di Saint Bon class was a pair of pre-dreadnought battleships built for the Italian Navy (Italian: Regia Marina) during the 1890s. The class comprised two ships: Ammiraglio di Saint Bon, the lead ship, and Emanuele Filiberto. They were armed with a main battery of four 254 mm (10 in) guns and were capable of a top speed of 18 knots (33 km/h; 21 mph). Smaller and less powerfully-armed than most contemporary battleships, they marked a brief departure from Italian capital ship design, which had previously emphasized large ships equipped with large guns.

Both ships served in the active duty squadron early in their careers, and participated in the Italo-Turkish War of 1911–1912. They took part in the Italian offensives in North Africa and the island of Rhodes, but did not see combat with the Ottoman fleet. They were reduced to harbor defense ships by the outbreak of World War I, and they spent the war in Venice. The ships were discarded shortly after the end of the war, both having been stricken in 1920.