Nathaniel Bowditch
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Nathaniel Bowditch (/ˈbaʊdɪtʃ/; March 26, 1773 – March 16, 1838) was an early American mathematician remembered for his work on ocean navigation. He is often credited as the founder of modern maritime navigation; his book The New American Practical Navigator, first published in 1802, is still carried on board every commissioned U.S. Naval vessel.