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''Rusalka'' ((ロシア語: Русалка), ''Mermaid''), was one of two s built for the Imperial Russian Navy in the 1860s. She served for her entire career with the Baltic Fleet. Aside from hitting an uncharted rock not long after she was completed in 1869, she had an uneventful career. ''Rusalka'' sank in a storm in 1893 with the loss of all hands in the Gulf of Finland. A memorial was built in Reval (modern Tallinn) to commemorate her loss almost a decade later. Her wreck was rediscovered in 2003, bow-down in the mud, which has prompted a new theory regarding her loss. ==Design and description== ''Rusalka'' was long at the waterline. She had a beam of and a maximum draft of . The ship was designed to displace , but turned out to be overweight and actually displaced . Her crew numbered 13 officers and 171 crewmen in 1877.〔McLaughlin, p. 156〕 The ship had two simple horizontal direct-acting steam engines, each driving a single propeller. The engines were designed to produce a total of using steam provided by two coal-fired rectangular fire-tube boilers, but only achieved and a speed of approximately during her sea trials.〔McLaughlin, pp. 156, 159–60〕 She carried a maximum of of coal for her boilers.〔Chesneau & Kolesnik, p. 176〕 ''Rusalka'' was initially armed with a pair of rifled Model 1867 guns in the forward gun turret and a pair of smoothbore Rodman guns in the aft turret. The Rodman guns were replaced by a pair of Obukhov rifled guns in 1871 and all of the nine-inch guns were replaced in their turn by longer, more powerful nine-inch Obukhov guns in 1878–79. No light guns for use against torpedo boats are known to have been fitted aboard the ship before the 1870s when she received 3 four-pounder guns mounted on the turret tops as well as a variety of smaller guns that included Engström quick-firing (QF) guns, Nordenfelt guns, single-barreled QF Hotchkiss guns and QF Hotchkiss revolving cannon.〔McLaughlin, p. 158〕 The ship had a complete waterline belt of wrought iron that was thick amidships and thinned to at the bow and at the stern. The armor was backed by of teak. The circular turrets were protected by armor thick and the walls of the ship's oval conning tower were also 4.5 inches thick. Her deck was thick amidships, but reduced to at the ends of the ship.〔McLaughlin, pp. 158–59〕 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「Russian monitor Rusalka」の詳細全文を読む スポンサード リンク
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