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 100
406 miles, I demand her diftance, andwhat latitude fhe is in ? Def*-4 06E. By PROJECTION.Draw the meridian AB, upon whicherecl; the perpendicular EC, and fet offthereon from B her departure 406 eafter-ly from B to C ; with the chord of 6o°,on C defcribe an arch, and fet off thereonthe complement of… … By LOGARITHMS.By making the departure BC radius. By making the diftance AC radiys, As radius 4 points 10.00000 Is to the departure 406 2.60853 So is co-tang, courfe 5| pts. 9.67483 To the diff. of lat. 192 2.28336 As fine courfe 5^ pts.Is to departure 406So is radius To the diftance 449.? From the…
Navigation · Nautical astronomy
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