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 16
latitudeof the point T is MT, north, and of the point T, MT, north. The Difference ofLatitude between any two places is the arc of a meridian intercepted between theirparallels of latitude, and is called North or South, according to direction; tnus, thedifference of latitude between T and T is Tnf… … FIG. l. 10 ... fc.. DEFINITION RELATING TO NAVIGATION. reckoned. Longitude is measured East or West through 180° from the meridian ofa designated- place, such meridian being termed the Prime Meridian; the primemeridian used by most nations, including the United States, is that of Greenwich,England.…
Navigation · Nautical astronomy
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