American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, United States. Navy Dept. Bureau of Equipment, Logan, George Wood, 1868-1915 · Washington, Govt. Print. Off. · leaf 44
tted withoutinvolving the application of this problem, and a mistake in its solution may produceserious consequences. The student is therefore urged to give it his most carefulattention. 79. When the effect of a compass error, whether arising from variation or fromdeviation, is to draw the north…
Navigation · Nautical astronomy
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