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HMS ''Polychrest'' is a fictional naval vessel from Patrick O'Brian's Aubrey–Maturin series of historical novels about the Royal Navy during the Napoleonic Wars. The ship features in the second book in the series, ''Post Captain'', and is a very unconventional sloop-of-war with sharp ends at both bow and stern, no tumblehome (inward curvature at the top of the hull), drop keels (similar to daggerboards on some modern sail boats), and the remnants of the launching system for an unsuccessful secret weapon (a giant rocket). The physical form of ''Polychrest'' (except for the secret weapon) was taken from the real ''Dart'' class of sloops. The sliding keels, originally designed by Captain John Schank, were employed upon a number of small Royal Navy vessels around this period, although problems with leaking centerboard cases perhaps discouraged wider experimentation. Unlike ''Polychrest'' with her extraordinary leeway and propensity for missing stays, the real ''Dart'' and her sister ship ''Arrow'' performed satisfactorily during their Royal Navy service. ''Dart'' was broken up in 1809 and ''Arrow'' captured by two French frigates in 1805. The poor sailing qualities of ''Polychrest'' and perhaps the notion of a new secret weapon were likely taken from HMS ''Project'', a much smaller vessel than ''Dart'' or ''Polychrest'' with a very shallow draft to carry a new design of howitzer into coastal waters. ''Project'' was broken up in 1810 after only five years of service. Aubrey had heard of the ship before, reflecting upon being offered command that "she was known as the 'Carpenter's Mistake', and no one in the service had ever imagined she would be launched.". After several months of service in the English Channel, the ''Polychrest'' is severely damaged after running aground during a raid on a French port, and sinks soon thereafter. ==See also== * HMS ''Sophie'' * HMS ''Surprise'' * Notable fictional Royal Navy ship names * List of fictional ships 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 Polychrest」の詳細全文を読む スポンサード リンク
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