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 70
t the problem in detail, the following may be eniimerated as the generalconditions which result in a good fix: (a) When the center object of the three lies between the observer and a linejoining the other two, or lies nearer than either of the other two. (&) When the sum of the right and left… … 64 PILOTING.
Navigation · Nautical astronomy
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