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The sinking of the Cunard ocean liner RMS ''Lusitania'' occurred on Friday, 7 May 1915 during the First World War, as Germany waged submarine warfare against the United Kingdom of Great Britain and Ireland. The ship was identified and torpedoed by the German U-boat and sank in 18 minutes. The vessel went down off the Old Head of Kinsale,〔Preston, D. (2003) ''Wilful Murder. The Sinking of the Lusitania''. London : Black Swan. ISBN 978-0552998864.〕 Ireland, killing 1,198 and leaving 761 survivors. The sinking turned public opinion in many countries against Germany, contributed to the American entry into World War I and became an iconic symbol in military recruiting campaigns of why the war was being fought.〔 ''Lusitania'' had the misfortune to fall victim to torpedo attack relatively early in the First World War, before tactics for evading submarines were properly implemented or understood. The contemporary investigations in both the UK and the United States into the precise causes of the ship's loss were obstructed by the needs of wartime secrecy and a propaganda campaign to ensure all blame fell upon Germany. Argument over whether the ship was a legitimate military target raged back and forth throughout the war as both sides made misleading claims about the ship. At the time she was sunk, she was carrying a large quantity of rifle cartridges and non-explosive shell casings, as well as civilian passengers. Several attempts have been made over the years since the sinking to dive to the wreck seeking information about precisely how the ship sank, and argument continues to the present day. ==Background== When ''Lusitania'' was built, her construction and operating expenses were subsidised by the British government, with the provision that she could be converted to an Armed Merchant Cruiser if need be. At the outbreak of the First World War, the British Admiralty considered her for requisition as an armed merchant cruiser, and she was put on the official list of AMCs. The Admiralty then cancelled their earlier decision and decided not to use her as an AMC after all; large liners such as ''Lusitania'' consumed enormous quantities of coal (910 tons/day, or 37.6 tons/hour) and became a serious drain on the Admiralty's fuel reserves, so express liners were deemed inappropriate for the role when smaller cruisers would do. They were also very distinctive; so smaller liners were used as transports instead. ''Lusitania'' remained on the official AMC list and was listed as an auxiliary cruiser in the 1914 edition of ''Jane's All the World's Fighting Ships'', along with ''Mauretania''. At the outbreak of hostilities, fears for the safety of ''Lusitania'' and other great liners ran high. During the ship's first east-bound crossing after the war started, she was painted in a drab grey colour scheme in an attempt to mask her identity and make her more difficult to detect visually. When it turned out that the German Navy was kept in check by the Royal Navy, and their commerce threat almost entirely evaporated, it very soon seemed that the Atlantic was safe for ships like ''Lusitania'', if the bookings justified the expense of keeping them in service. Many of the large liners were laid up over the autumn and winter of 1914–1915, in part due to falling demand for passenger travel across the Atlantic, and in part to protect them from damage due to mines or other dangers. Among the most recognisable of these liners, some were eventually used as troop transports, while others became hospital ships. ''Lusitania'' remained in commercial service; although bookings aboard her were by no means strong during that autumn and winter, demand was strong enough to keep her in civilian service. Economizing measures were taken, however. One of these was the shutting down of her No. 4 boiler room to conserve coal and crew costs; this reduced her maximum speed from over to . Even so, she was the fastest first-class passenger liner left in commercial service. With apparent dangers evaporating, the ship's disguised paint scheme was also dropped and she was returned to civilian colours. Her name was picked out in gilt, her funnels were repainted in their traditional Cunard livery, and her superstructure was painted white again. One alteration was the addition of a bronze/gold coloured band around the base of the superstructure just above the black paint.〔Layton, J. Kent. ''Lusitania: An Illustrated Biography'' (2010, Amberley Books)〕 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「Sinking of the RMS Lusitania」の詳細全文を読む スポンサード リンク
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