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Humber-class monitor
The ''Humber''-class monitors were three large gunboats under construction for the Brazilian Navy in Britain in 1913. Designed for service on the Amazon River, the ships were of shallow draft and heavy armament and were ideally suited to inshore, riverine and coastal work but unsuitable for service at sea, where their weight and light draft reduced their speed from a projected twelve knots to under four. The class comprised , and . All three were taken over by the Royal Navy shortly before the outbreak of the First World War and were commissioned as small monitors. All three saw extensive service during the war and were sold in 1919.
==Construction==
The three ''Humber''-class monitors were originally ordered for the Brazilian Navy as the ''Javary''-class gunboats intended for inshore work on the River Amazon and its tributaries. Ordered from the Vickers Limited shipyard at Barrow -in - Furness, the three ships were launched by 1913 and were undergoing sea trials when the Brazilian government informed Vickers that they would not be able to pay for the warships. Vickers attempted to find a foreign buyer for the boats and the British government stepped in to purchase the gunboats on 4 August 1914 for ₤155,000 each in order to prevent them being bought by a neutral navy and then sold on to Germany.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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