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David Bushnell (August 30, 1740 - 1824 or 1826) was an American inventor. Turtle was the world's first submersible vessel with a documented record of use in combat. It was built in 1775 by American David Bushnell as a means of attaching explosive charges to ships in a harbor, for use against Royal Navy vessels during the American Revolutionary War. Several attempts were made using Turtle to affix explosives to the undersides of British warships in New York Harbor in 1776. All failed, and her transport ship was sunk later that year by the British with the submarine aboard. Submarine Warfare, Past and Present, 1907 (cropped and cleaned).