49.9 MB (1.3 MB compressed)
3638 x 4792 pixels
30.7 x 40.6 cm ⏐ 12.1 x 16.0 in (300dpi)
ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY
American vessel 'Turtle' (1776), the first submarine to be used in war, 19th century. Designed by David Bushnell (1742-1824), the vessel was propelled by a crank and contained sufficient air for a 30 minute submersion. During the American War of Independence (1775-1783) several attempts were made to use 'Turtle', armed with a single mine, to blow up British warships. This shows Sergeant Ezra Lee on 6 September 1776 during his abortive attack on the 'Eagle', one of the British ships blockading New York Harbour.
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