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 94
of the same object.—If the ships track lay along the land, take the bearing of the objectand note the angle between it and the direction of the ships head.After the ship has run on the same course to change the bearing sev-eral points, note the same angle again. Then, in Fig. 37, there are known… … Example. A point of land, C, bore from the ships first position E. N. E.; after running 25 miles N. by W.it bore S. E.; required, the distance of the ship from the point of land at the time of the last bearing. AB =25 log 1-39794 CAB = 7 points = 78° 45 logsm 9.99157 CBA = 3 pomts = 33 45 ACB = 6…
Navigation · Nautical astronomy
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