A new treatise on the practice of navigation at sea : containing all the details necessary to enable the mariner to become a good practical navigator. (1902)
Thoms, William · New York : Printed for the author and sold by John Bliss & Co · leaf 122
ude mayoe found as follows : RoLK.—Correct the Observed Altitude as usual, and tc the true Central Altitude, add the DiflFerence between U»«D<K:linatioD and 90°, or the Polar Distance. The Sum will be the Latitude of the same name as the Decliuatioa In High Latitudes, in the Summer time, the Sun… … In tins Figure the true Meridian Altitude of the Sun at Noon is 33* 28 South, and which, worked ou.m the usual manner, gives Latitude 80* 0 North, (on the coast of Spitzbergen,) and the Latitude from th« Meridian Altitude at Midnight, is found as follows • EXAMPLE 16. June 21m, 1854. Sea Time at…
Navigation · Nautical astronomy
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