The new American practical navigator : being an epitome of navigation, containing all the tables necessary ... (1802)
Bowditch, Nathaniel, 1773-1838, Lee, Marvin, former owner. DSI, Stuart, Gilbert, 1755-1828 DSI, Burndy Library, donor. DSI · [Salem] : Printed at Newburyport, Mass., 1802, by Edmund M. Blunt, for Cushing and Appleton, Salem : Sold by every book-seller, ship- chandler, and mathematical-instrument-maker in the United States and West Indies · leaf 99
.fhip runs S. E. b. E. from i° 45 north latitude, and then by ob-fervation is in 20 46 fouth latitude, what is her diftance and departure ? In this cafe, as the fhip has croffed the equator, the fum of the two lati,fudes i° 45/ and 20 46 is the difference of latitude 40 311=271 miles. By… … By LOGARITHMS. By making difF. of lat. BC radius To find the departure. As radius 4 points . 10.00000 Is to diff. of lat. 271 2.43297 So is tang, courfe 5 pts. 10.17511 By making the Dep. AB radius. To find the diftance. As co-fine courfe 5 points - 9.74474 Is to the diff. of lat. 271 2.43297 vSo…
Navigation · Nautical astronomy
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
