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USS Marietta (1803) : ウィキペディア英語版 | USS Marietta (1803)
USS ''Marietta'' was a small, man-powered gunboat acquired by the U.S. Navy in 1805 for the task of coastal defense. She had 28 rows of oars, which required the effort of 56 seamen to propel her. However, as primitive as she might seem, she was armed with a formidable gun which shot a 24-pound cannonball, plus a number of smaller, but lethal, guns, which required a number of gunners to be on board during operations. == Rowed versus sail ==
The value of such a craft at the time was that it did not depend on wind to propel it, and it could operate stealthily in and around harbors and rivers at night.
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「USS Marietta (1803)」の詳細全文を読む
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