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 208
egulated to Apparent Time, before commencing the observation, then by applying th#Equation of Time we have the Mean Time of the Distance, the Difference between which and the Green-wich Mean Time is the Longitude in Time, to be turned into Degrees and Minutes as usual. The following Diagram will… … EXAMPLE 1. April Uth, 1851. In Latitude 26° 2 N., Longitude by Chronometer carried on 38° 0 W., at llh 23m 29s M. T»t the Ship, the observed Distance of the Star Spica from the near Limb of the Moon was 9° 25 82 Vertically,Moons observed Altitude, L.L.,62° 41, and the Stars Altitude 53° 13.…
Navigation · Nautical astronomy
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