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HMS ''Dominion'' was a of the Royal Navy. Like all ships of the class (apart from the lead ship of the class, ) she was named after an important part of the British Empire, namely the Dominion of Canada. She has been the only ship of the Royal Navy to bear the name ''Dominion''. Commissioned in 1905, she entered service with the Atlantic Fleet but ran aground in August 1906 in the Gulf of Saint Lawrence. Repairs took nearly a year, and upon completion, she was assigned to the Home Fleet. Following a reorganisation of the fleet in 1912, she, along with her King Edward VII class sister ships formed the 3rd Battle Squadron, which served in the Mediterranean. When World War I broke out, the 3rd Battle Squadron was assigned to the Grand Fleet, with ''Dominion'' conducting operations as part of the Northern Patrol. In 1916, the squadron was detached to the Nore Command, and was subsequently dissolved in March 1918. She was a parent ship for the raids on Zeebrugge and Ostend, and, decommissioned in May, ended the war as an accommodation ship. She was disposed of in 1919 and eventually scrapped in 1924. ==Technical characteristics== HMS ''Dominion'' was ordered under the 1902 Naval Estimates. She was laid down at Vickers' yards at Barrow-in-Furness on 23 May 1902, her first keel plate placed by Lord Walter Kerr, First Sea Lord. She was launched on 25 August 1903, began trials in May 1905 and was completed in July 1905.〔Burt, pp. 232, 255〕 Although ''Dominion'' and her seven sister ships of the ''King Edward VII'' class were a direct descendant of the ''Majestic'' class, they were also the first class to make a significant departure from the ''Majestic'' design, displacing about 1,000 tons more and mounting for the first time an intermediate battery of four 9.2-inch (234-mm) guns in addition to the standard outfit of 6-inch (152-mm) guns. The 9.2-inch was a quick-firing gun like the 6-inch, and its heavier shell made it a formidable weapon by the standards of the day when ''Dominion'' and her sisters were designed; it was adopted out of concerns that British battleships were undergunned for their displacement and were becoming outgunned by foreign battleships that had begun to mount 8-inch (203-mm) intermediate batteries. The four 9.2-inch were mounted in single turrets abreast the foremast and mainmast, and ''Dominion'' thus could bring two of them to bear on either broadside. Even then, ''Dominion'' and her sisters were criticised for not having, a uniform secondary battery of 9.2-inch guns, something considered but rejected because of the length of time it would have taken to design the ships with such a radical revision of the secondary armament layout. In the end, it proved impossible to distinguish 12-inch and 9.2-inch shell splashes from one another, making fire control impractical for ships mounting both calibres, although ''Dominion'' had fire-control platforms on her fore- and mainmasts rather than the fighting tops of earlier classes.〔''Conway's All the World's Fighting Ships, 1860–1905'', p. 38〕 Like all British battleships since the ''Majestic'' class, the ''King Edward VII''-class ships had four 12-inch (305-mm) guns in two twin turrets (one forward and one aft); the first five ''King Edward''s, including ''Dominion'', mounted the Mark IX 12-inch. Mounting of the 6-inch guns in casemates was abandoned in ''Dominion'' and her sister ships, the 6-inch instead being placed in a central battery amidships protected by 7-inch (178-mm) armoured walls. Otherwise, ''Dominion''s armour was much as in the ''London'' class battleships, although there were various differences in detail from the ''London''s.〔 ''Dominion'' and her sisters were the first British battleships with balanced rudders since the 1870s and were very maneuverable, with a tactical diameter of 340 yards (311 m) at 15 knots (27.75 km/h). However, they were difficult to keep on a straight course, and this characteristic led to them being nicknamed "the Wobbly Eight" during their 1914–1916 service in the Grand Fleet. They had a slightly faster roll than previous British battleship classes, but were good gun platforms, although very wet in bad weather.〔 Primarily powered by coal, ''Dominion'' had oil sprayers installed during her construction, as did all of her sisters except , the first time this had been done in British battleships. These allowed steam pressure to be rapidly increased, improving ''Dominion''s acceleration. The eight ships between them were given four different boiler installations for comparative purposes; ''Dominion''s outfit of 16 Babcock and Wilcox boilers allowed her to exceed her designed speed on trials,〔 during which she exceeded 18.3 knots (33.9 km/h).〔Burt, p. 241〕 ''Dominion'' was a powerful ship when she was designed, and completely fulfilled the goals set for her at that time. However, she was unlucky in that the years of her design and construction were ones of revolutionary advancement in naval guns, fire control, armor, and propulsion. She joined the fleet in mid-1905, but quickly was made obsolete by the commissioning of the revolutionary battleship at the end of 1906 and the large numbers of the new dreadnought battleships that commissioned in succeeding years. By 1914, ''Dominion'' and her ''King Edward VII''-class sisters were, like all predreadnoughts, so outclassed that they spent much of their 1914–1916 Grand Fleet service steaming at the heads of divisions of the far more valuable dreadnoughts, protecting the dreadnoughts from naval mines by being the first battleships to either sight or strike them.〔Burt, p. 235〕 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「HMS Dominion (1903)」の詳細全文を読む スポンサード リンク
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