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 121
gives 420for the difference of longitude nearly, CASE IV. Both latitudes and courfe given, toJijid the departure? diftance^ and differ^ ence of lonsntude. Suppofe a fhip failing from a place in the latitude of 490 57 N. and Ion,gitude of 300 W. makes a courfe good of S. 390 W. and then by… … JKTDDLE LATITUDE SAILING. I09 By PROJECTION.Draw the meridian ACD, on which fet off AC equal to the difference oflatitude 266 miles ; draw CB perpendicular to AC ; draw the line AB,making an angle equal to the courfe 390 with AC, and meeting EC in B ;through B draw BD, making an angle equal to the…
Navigation · Nautical astronomy
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