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The ''Echo''-class was a class of inshore survey vessel built for the British Royal Navy in 1958–1959. The class was designed to operate in close waters such as harbour approaches, shipping lanes, rivers and estuaries. Together, the ships of this class formed the Royal Navy's Inshore Survey Squadron.〔http://www.royal-navy.mod.uk/server/show/nav.1909 Royal Navy – History of HMS Echo〕 The class consisted of three ships, and were of composite (wood on metal frames) construction. They were based on the same basic hull as the Ham class minesweeper and the Ley class minehunter. They had a large superstructure with an open bridge on top. The engines were uprated to 1,400 bhp and a large superstructure was fitted. They were crewed by 5 officers and 34 ratings, with accommodation on board for 4 officers and 18 rates. In the late 1960s, two Ham-class minesweepers, HMS ''Powderham'' and ''Yaxham'' were rebuilt as inshore survey vessels very similar to the ''Echos'', although they could be identified by having an enclosed wheelhouse and a tripod mast. They were renamed HMS ''Waterwitch'' and ''Woodlark'', respectively. All ships were sold out of service in 1985. ==Ships== * , built by J. Samuel White, Cowes, commissioned 12 September 1958, sold 1985 (scraped for spares) * , built by W. M. Blackmore & Sons, Bideford, commissioned 1959, sold 1985 (renamed Earl of Romney) * , built by William Weatherhead & Sons, Cockenzie, commissioned 1959, sold 1985 (renamed Jonas Hanway) 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「Echo-class survey ship (1957)」の詳細全文を読む スポンサード リンク
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