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 31
t NESW represent the plane of the horizon; the inner circle, NESW, the compass-cardas affected by terrestrial magnetism. In Fig. 8 the magnetic bearing of an object, A, is given N. N. E., variation 2points easterly to find the true bearing. Applying the rule, the true bearing will be found to be N.…
Navigation · Nautical astronomy
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