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 147
f th*Horizon at Rising or Setting, and is found by inspection in Table XXXV, by entering it with the Latitudeof the Ship at the side, and the Decimation of the body at the top, and at the angle of meeting will b« th«required Amplitude in degrees and minutes, to be called East in the morning and… … This Figure represents the North Pole of the Heavens elevated above the Horizon equal to the L«iitaacof the place, and the Celestial Eqaator at Right Angles to it. The line drawn perpendicular to the Hori-zon is called the Prime Vertical Circle, and which passes through the East and West points in…
Navigation · Nautical astronomy
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