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 158
Ine beginnmg of the Astronomical U»Tuid to the Noon of the Civil Day. FINDING THE APPARENT TIME AT SEA BY THE SUN. 12? FINDING THE APPARENT TIME AT SEA BY THE SUN, W«EN THE SHIP IS ON THF EQUATOR. When the Ship is on the Equator, and the Sun is also on the Equator, that is, when his Declination v9,… … In this case, the Sons change of Altitude is 15 in one minute of Time, or 15 in one hour, ttxronghoatthe entire day. The time can, therefore, be as correctly found near the Meridian, that is, near Noon, as itcan at any other time of the day, and an error in the Latitude, in working out the time,…
Navigation · Nautical astronomy
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