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.
Regina Margherita was the lead ship of her class of pre-dreadnought battleships built for the Italian Regia Marina between 1898 and 1904. She had one sister ship, Benedetto Brin. Regina Margherita saw action in the Italo-Turkish War of 1911–1912. By the outbreak of World War I in 1914, the battleship had been reduced to a training ship. She struck two naval mines on the night of 11–12 December 1916 while steaming off Valona. She sank with heavy loss of life: 675 men were killed, and only 270 survived.
Benedetto Brin was a Regina Margherita-class pre-dreadnought battleship built for the Italian Regia Marina between 1899 and 1905. The ship was armed with a main battery of four 12-inch (300 mm) guns and was capable of a top speed of 20 knots. Benedetto Brin saw combat in the Italo-Turkish War of 1911–1912, including the bombardment of Tripoli in October 1911. She was destroyed by an internal explosion during World War I in September 1915, which killed over 450 of the ship's crew.
Ammiraglio di Saint Bon was a pre-dreadnought battleship of the Regia Marina built during the 1890s. She was laid down in July 1893, launched in April 1897, and completed in May 1901. She was the lead ship of her class, and had one sister ship, Emanuele Filiberto. The ship was armed with a main battery of four 254 mm (10 in) guns and was capable of a top speed of 18 knots.
Re Umberto was a Re Umberto-class ironclad battleship built for the Italian Regia Marina in the 1880s, the lead ship of her class. She was laid down in July 1884 and launched in October 1888; work proceeded so slowly that she was not finished until February 1893. She was armed with a main battery of four 343 mm (13.5 in) guns and had a top speed of 20.3 knots, though this high speed came at the cost of armor protection.
Sicilia was the second of three Re Umberto-class ironclad battleships built for the Italian Regia Marina. The ship, named for the island of Sicily, was laid down in Venice in November 1884, launched in July 1891, and completed in May 1895. She was armed with a main battery of four 343 mm (13.5 in) guns and had a top speed of 20.3 knots, though this high speed came at the cost of armor protection.
Sardegna was the third of three Re Umberto-class ironclad battleships built for the Italian Regia Marina. The ship, named for the island of Sardinia, was laid down in La Spezia in October 1885, launched in September 1890, and completed in February 1895. She was armed with a main battery of four 340 mm (13.5 in) guns and had a top speed of 20.3 knots —albeit at the cost of armor protection—and she was one of the first warships to be equipped with a wireless telegraph.
The Regina Elena class was a group of four pre-dreadnought battleships built for the Italian Regia Marina between 1901 and 1908. The class comprised four ships: Regina Elena, the lead ship, Vittorio Emanuele, Roma, and Napoli. Designed by Vittorio Cuniberti, they were armed with a main battery of two 12-inch (305 mm) guns and twelve 8 in (203 mm) guns, and were capable of a top speed of 22 knots. They were the fastest battleships in the world at the time of their commissioning, faster even than the British turbine-powered HMS Dreadnought.
The Emanuele Filiberto was a pre-dreadnought battleship built for the Italian Navy during the 1890s. Her keel was laid down in October 1893 and she was launched in September 1897; work was completed in April 1902. She had one sister ship, Ammiraglio di Saint Bon, the lead ship of the Ammiraglio di Saint Bon class. She was armed with a main battery of four 254 mm (10 in) guns and was capable of a speed in excess of 18 knots.
Vittorio Emanuele was an Italian pre-dreadnought battleship, laid down in 1901, launched in 1904 and completed in 1908. She was the second member of the Regina Elena class, which included three other vessels: Regina Elena, Napoli, and Roma. Vittorio Emmanuele was armed with a main battery of two 305 mm (12 in) guns and twelve 203 mm (8 in) guns. She was quite fast for the period, with a top speed of nearly 21 knots.
Roma was an Italian pre-dreadnought battleship, laid down in 1903, launched in 1907 and completed in 1908. She was the third member of the Regina Elena class, which included three other vessels: Regina Elena, Napoli, and Vittorio Emanuele. Roma was armed with a main battery of two 305 mm (12 in) guns and twelve 203 mm (8 in) guns. She was quite fast for the period, with a top speed of nearly 21 knots.
Napoli was a Regina Elena-class pre-dreadnought battleship built for the Italian Regia Marina in 1903–08. She was the last member of the four-ship class, which included the lead ship Regina Elena, Vittorio Emanuele, and Roma. Napoli was armed with a main battery of two 305 mm (12 in) and twelve 203 Mm (126,138 mi) guns, and was capable of a top speed of 21 knots.
Piemonte was a unique protected cruiser built for the Italian Regia Marina in the 1880s by the British shipyard Armstrong Whitworth. She was the first major warship armed entirely with quick-firing (QF) guns and she was also the fastest cruiser in the world upon her completion in 1889. Piemonte was frequently deployed overseas, including a lengthy tour in East Asian waters from 1901 to 1904. She saw significant action during the Italo-Turkish War in 1911–1912 in the Red Sea, where she frequently bombarded Ottoman ports. During the Battle of Kunfuda Bay in January 1912, she and two destroyers sank four Ottoman gunboats and forced ashore three more. Piemonte participated in World War I but she saw little action during the conflict. She remained in service until 1920, when she was scrapped.
Agordat was a torpedo cruiser of the Italian Regia Marina built in the late 1890s. She was the lead ship of the Agordat class, which had one other member, Coatit. The ship, which was armed with twelve 76 mm (3 in) guns and two 450 mm (17.7 in) torpedo tubes, was too slow and short-ranged to be able to scout effectively for the fleet, so her career was limited. She saw action during the Italo-Turkish War in 1911–1912, where she provided gunfire support to Italian troops in North Africa. She assisted in the occupation of Constantinople in the aftermath of World War I, and in 1919 she was reclassified as a gunboat. In January 1923, Agordat was sold for scrapping.
Coatit was a torpedo cruiser of the Italian Regia Marina built in the late 1890s. She was the second and final member of the Agordat class. The ship, which was armed with twelve 76 mm (3 in) guns and two 450 mm (17.7 in) torpedo tubes, was too slow and short-ranged to be able to scout effectively for the fleet, so her career was limited. She saw action during the Italo-Turkish War in 1911–1912, where she provided gunfire support to Italian troops in North Africa. She also caused a minor diplomatic incident from an attack on retreating Ottoman soldiers in Anatolia. Coatit was part of an international fleet sent to Constantinople when the city appeared to be at risk of falling to the Bulgarian Army during the First Balkan War. In 1919, she was converted into a minelayer and was sold for scrap in 1920.
Nino Bixio was a protected cruiser built by the Italian Regia Marina in the early 1910s. She was the lead ship of the Nino Bixio class, which were built as scouts for the main Italian fleet. She was equipped with a main battery of six 120-millimeter (4.7 in) guns and had a top speed in excess of 26 knots, but her engines proved to be troublesome in service. Nino Bixio saw service during World War I and briefly engaged the Austro-Hungarian cruiser SMS Helgoland in 1915. Her career was cut short in the post-war period due to severe cuts to the Italian naval budget, coupled with her unreliable engines. Nino Bixio was stricken from the naval register in March 1929 and sold for scrap.
Partenope was a torpedo cruiser built for the Italian Regia Marina in the 1880s, the lead ship of her class, which included seven other vessels. The ship was built by the Regio Cantiere di Castellammare di Stabia; she was laid down in June 1888, was launched in December 1889, and was completed in September 1890. Her main armament were her five torpedo tubes, which were supported by a battery of ten small-caliber guns.
Iride was a torpedo cruiser of the Partenope class built for the Italian Regia Marina in the 1880s. Laid down in February 1889 at the Regio Cantiere di Castellammare di Stabia shipyard, she was launched in July 1890 and was commissioned in November 1892. Her main armament were her six torpedo tubes, which were supported by a battery of ten small-caliber guns. Iride spent most of her career in the main Italian fleet, where she was primarily occupied with training exercises. During the Italo-Turkish War in September 1911, she remained in Italian waters until late in the conflict; she escorted a troop convoy to North Africa in April 1912 and bombarded Ottoman positions in June and July. Iride was eventually broken up for scrap in December 1920.
The Partenope class was a group of eight torpedo cruisers built for the Italian Regia Marina in the 1880s and 1890s. The class comprised Partenope, Minerva, Euridice, Urania, Iride, Aretusa, Caprera, and Calatafimi. Based on the earlier cruiser Tripoli, the Partenope class represented a temporary embrace of the Jeune École, which emphasized the use of cheap torpedo-armed vessels as a means to defeat the much more expensive ironclad battleships of the day. To fulfill their intended role, the vessels were armed with five or six 450 mm (17.7 in) torpedo tubes.
Italy 
