The Navigatori class were a group of Italian destroyers built in 1928–1929 for the Regia Marina, named after Italian explorers. They fought in World War II. Just one vessel, Nicoloso Da Recco, survived the conflict.
The Folgore class were a group of four destroyers built for the Regia Marina in the 1930s. None of the ships survived World War II.
The Leone class were a group of destroyers built for the Italian Navy in the early 1920s. Five ships were planned and three completed. All three ships were based at Massawa, Eritrea, during World War II and were sunk during the East African Campaign.
The Francesco Caracciolo-class battleships were a group of four super-dreadnought battleships designed for the Regia Marina in 1913 and ordered in 1914. The first ship of the class, Francesco Caracciolo, was laid down in late 1914; the other three ships, Cristoforo Colombo, Marcantonio Colonna, and Francesco Morosini followed in 1915. Armed with a main battery of eight 381 mm (15 in) guns and possessing a top speed of 28 knots, the four ships were intended to be the equivalent of the fast battleships like the British Queen Elizabeth class.
The Vifor class was a group of four destroyers ordered by Romania in 1913 and built in Italy during the First World War. The four ships were however requisitioned by Italy in 1915 and rearmed as scout cruisers (esploratori), subsequently seeing service in World War I. Two were re-purchased by Romania in 1920 and saw service in World War II. The other two were eventually transferred by Italy to the Spanish Nationalists and saw service during the Spanish Civil War.
The Comandanti Medaglie d'Oro class were a group of 20 destroyers ordered for the Regia Marina during World War II. Nine had been laid down by the time of the Italian armistice in September 1943 and all but one of those ships which had not yet been laid down were cancelled. Of those that had been laid down, none had been launched by that time and all were subsequently scrapped.
The Pisa class consisted of three armored cruisers built in Italy in the first decade of the 20th century. Two of these were for the Royal Italian Navy and the third was sold to the Royal Hellenic Navy and named Georgios Averof. This ship served as the Greek flagship for the bulk of her active career and participated in the Balkan Wars of 1912–1913, fighting in two battles against the Ottoman Navy. She played a minor role in World War II after escaping from Greece during the German invasion in early 1941. Influenced by communist agitators, her crew mutinied in 1944, but it was suppressed without any bloodshed. Georgios Averof returned to Greece after the German evacuation in late 1944 and became a museum ship in 1952. She is the only surviving armored cruiser in the world.
The Vettor Pisani class consisted of two armoured cruisers built for the Royal Italian Navy in the 1890s. The two ships of the class, Vettor Pisani and Carlo Alberto, were frequently deployed overseas during their careers. The former served in the Far East during the Boxer Rebellion of 1900 while the latter was involved in pioneering long-range radio experiments several years later before deploying to South American waters. Carlo Alberto then served as a training ship for several years. Both ships participated in the Italo-Turkish War of 1911–12 and played minor roles in World War I, during which time Carlo Alberto was converted into a troop transport and Vettor Pisani into a repair ship. They were both discarded in 1920 and subsequently scrapped.
The Italian cruiser San Marco was a San Giorgio-class armoured cruiser built for the Royal Italian Navy in the first decade of the 20th century. She was the first large Italian ship fitted with steam turbines and the first turbine-powered ship in any navy to have four propeller shafts. The ship participated in the Italo-Turkish War of 1911–1912, during which time she supported the occupations of Benghazi and Derna, the island of Rhodes, and bombarded the fortifications defending the entrance to the Dardanelles. During World War I, San Marco's activities were limited by the threat of Austro-Hungarian submarines, although the ship did participate in the bombardment of Durazzo, Albania in late 1918. She played a minor role in the Corfu incident in 1923 and was converted into a target ship in the first half of the 1930s. San Marco was captured by the Germans when they occupied northern Italy in 1943 and was found sunk at the end of the war. The ship was broken up and scrapped in 1949.
The Italian cruiser Vettor Pisani was the name ship of her class of two armored cruisers built for the Royal Italian Navy in the 1890s. She often served as a flagship during her career and frequently served overseas. On one of these deployments, the ship received a radio message from Peking, one of the first long-range radio transmissions to a ship. Vettor Pisani participated in the Boxer Rebellion of 1900 and the Italo-Turkish War of 1911–12, during which her admiral nearly caused a diplomatic incident with the Austro-Hungarian Empire. During World War I, her activities were limited by the threat of Austro-Hungarian submarines and she was converted into a repair ship in 1916. Vettor Pisani was stricken from the Navy List in 1920 and scrapped later that year.
The Italian cruiser Carlo Alberto was the second of two Vettor Pisani-class armored cruisers built for the Royal Italian Navy in the 1890s. She was deployed overseas several times during her career, notably to the Far East and South America. The ship was used as a royal yacht by King Victor Emmanuel III of Italy in 1902, during which time she was used for radio experiments by Guglielmo Marconi. Carlo Alberto served as a training ship before the start of the Italo-Turkish War of 1911–12. During the war she supported Italian operations in Libya. The ship was virtually inactive during World War I and was converted into a troop transport in 1917–18. Carlo Alberto was stricken from the Navy List in 1920 and subsequently broken up for scrap.
The Italian cruiser Pisa was the name ship of her class of two armored cruisers built for the Royal Italian Navy in the first decade of the 20th century. The ship participated in the Italo-Turkish War of 1911–1912, during which she supported the occupations of Tobruk, Libya and several islands in the Dodecanese and bombarded the fortifications defending the entrance to the Dardanelles. During World War I, Pisa's activities were limited by the threat of Austro-Hungarian submarines, although the ship did participate in the bombardment of Durazzo, Albania in late 1918. After the war she became a training ship and was stricken from the Navy List in 1937 before being scrapped.
Alpino was one of nineteen Soldati-class destroyers built for the Regia Marina in the late 1930s and early 1940s. Completed in early 1939, she was one of the last of the first batch of a dozen ships to enter service.
Quintino Sella was the lead ship of her class of four destroyers built for the Regia Marina in the 1920s. Completed in 1926, she served in World War II.
Pantera was one of three Leone-class destroyers built for the Regia Marina in the early 1920s.
Tigre was one of three Leone-class destroyers built for the Regia Marina in the early 1920s.
Leone was the lead ship of her class of three destroyers built for the Regia Marina in the early 1920s.
Augusto Riboty was one of three Mirabello-class destroyers built for the Regia Marina during World War I.
Carlo Alberto Racchia was one of three Mirabello-class destroyers built for the Regia Marina during World War I.
Carlo Mirabello was one of three Mirabello-class destroyers built for the Regia Marina during World War I.
Regia Marina 
