American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, Logan, George Wood, 1868-1915, United States. Navy Dept. Bureau of Equipment · Washington, Govt. Print. Off · leaf 170
e OP from the common latitude of A± and B1? andits longitude will be a distance A1 O from At and Bt O from Bt. Let Y1 and F2 represent the longitude factors from Table 47 for the Sumner lines Aj A2 and Bt B2,respectively. Then, since Fj is the difference of longitude corresponding to a changeof 1…
Navigation · Nautical astronomy
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