The American practical navigator : being an epitome of navigation and nautical astronomy (1888)
Bowditch, Nathaniel, 1773-1838, United States. Navy Dept. Bureau of Navigation, Cooper, Philip Henry, 1844-1912 · Washington : Govt. Print. Off. · leaf 103
.70 INSTRUMENTS EMPLOYED IN NAUTICAL ASTRONOMY. … or In this case— SI also intersects HE at E and Fig. 50. SIS = SIH — SIH = 2NIH —2NIH= 2 NINE = 2 A. SEH = SIS = E. thirdand But if SI is not parallel, SIH and IHE are in different planes, which intersect in IH; and if SIS is in a[ plane, which intersects the first in SI and the second in SI, then,…
Navigation · Nautical astronomy
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