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''Etna'' was a protected cruiser of the Italian ''Regia Marina'' (Royal Navy) built in the 1880s. She was the lead ship of the , which included three sister ships. Named for Mount Etna on the island of Sicily, the ship was laid down in January 1883, was launched in September 1885, and was completed in December 1887. She was armed with a main battery of two and six guns, and could steam at a speed of around . ''Etna'' frequently cruised abroad throughout her career, including visits to the United States for the World's Columbian Exposition and the Hudson-Fulton Celebration in 1893 and 1909, respectively. She served as a training ship for naval cadets from 1907. She saw action during the Italo-Turkish War of 1911–12, primarily providing gunfire support to Italian troops ashore in Libya. By the outbreak of World War I in 1914, ''Etna'' had been withdrawn from service and was employed as a headquarters ship for the commander of the Italian fleet at Taranto and later for the light forces based at Brindisi. The old cruiser was finally sold for scrap in May 1921. ==Description== (詳細はbetween perpendiculars, with a beam of . She had a mean draft of and displaced between . Her crew numbered 12 officers and 296 men. The ship had two horizontal compound steam engines, each driving a single propeller, with steam provided by four double-ended cylindrical boilers. ''Etna'' was credited with a top speed of from . She had a cruising radius of at a speed of .〔 The main armament of the ships consisted of two Armstrong , 30-caliber breech-loading guns mounted in barbettes fore and aft. She was also equipped with six , 32-caliber, breech-loading guns that were carried in sponsons along the sides of the ship. For anti-torpedo boat defense, ''Etna'' was fitted with five 6-pounder Hotchkiss guns and five 1-pounder Hotchkiss guns. ''Etna'' was also armed with four torpedo tubes. One was mounted in the bow underwater and the other three were above water.〔Brook, p. 97〕 She was protected with an armored deck below the waterline with a maximum thickness of . The conning tower had worth of armor plating.〔 From 1905 to 1907 the ship was rebuilt with forecastle and poop decks added and her armament was revised. The heavy 10-inch guns were replaced with two quick-firing (QF) guns and the six breech-loading 6-inch guns were replaced by four QF 6-inch guns, two on each side amidships.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Italian cruiser Etna」の詳細全文を読む スポンサード リンク
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