Regina Margherita-class battleship

Regina Margherita on speed trials in July 1904
Class overview
Name	Regina Margherita
Operators	Regia Marina
Preceded by	Ammiraglio di Saint Bon class
Succeeded by	Regina Elena class
Built	1898–1905
In commission	1904–1916
Completed	2
Lost	2
General characteristics (Regina Margherita)
Type	pre-dreadnought battleship
Displacement	Normal: 13,215 long tons (13,427 t) Full load: 14,093 long tons (14,319 t)
Length	138.65 m (454 ft 11 in)
Beam	23.84 m (78 ft 3 in)
Draft	8.81 to 9 m (28 ft 11 in to 29 ft 6 in)
Installed power	28 × Niclausse boilers 21,790 ihp (16,249 kW)
Propulsion	2 × triple-expansion steam engines 2 × screw propellers
Speed	20 knots (37 km/h; 23 mph)
Range	10,000 nmi (18,520 km; 11,508 mi) at 10 kn (19 km/h; 12 mph)
Complement	812–900
Armament	2 × 2 – 305 mm (12 in)/40 guns 4 × 1 – 203 mm (8 in)/45 guns 12 × 1 – 152 mm (6 in)/40 guns 20 × 1 – 76 mm (3 in)/40 guns 2 × 1 – 47 mm (1.9 in)/40 guns 2 × 1 – 37 mm (1.5 in)/40 guns 4 × 450 mm (17.7 in) torpedo tubes
Armor	Harvey armor Belt and side: 6 in (152 mm) Deck: 3.1 in (78.7 mm) Turrets: 8 in (203 mm) Conning tower: 6 in (152 mm) Casemates: 6 in (152 mm)

The Regina Margherita class was a class of two battleships built for the Italian Regia Marina between 1898 and 1905. The class comprised two ships: Regina Margherita and Benedetto Brin. The ships were designed by the latter's namesake, Benedetto Brin, who died before the ships were completed. They were armed with a main battery of four 12 in (305 mm) guns and could steam at a speed of 20 knots (37 km/h; 23 mph).

Both ships saw extensive service with the Italian fleet for the first decade of their careers. They saw action in the Italo-Turkish War of 1911–1912, where they participated in the seizure of Cyrenaica in North Africa and operations in the eastern Mediterranean Sea. They were reduced to training ships by World War I, and both ships were lost with heavy death tolls during the conflict. Benedetto Brin exploded in Brindisi in September 1915, and Regina Margherita struck a mine and sank in December 1916.