The United States practical navigator; in which all the calculations are made by arithmetic - Softcover
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1864 Excerpt: ...V., page 14. 236 X 60 398 „. „.„. = 397.69639 the number of miles in the Difference of Longitude =-= 6 38' W. 35.60505 60 Which subtracted from the Longitude left 10 18 E. Gives the Longitude the ship is in... 3 40 E. Answer. QUESTION III. If two ships in the latitude of 44 30' North or South, Distant 216 miles, should sail directly South or North, until they arrive in the latitude of 32 17' North or South, what Distance would they be from each other? BY CASE II. By the Table" of Miles in a degree of Longitude in every Latitude, on page 9, Latitude 44 3C/ gives 42.79500 the number of miles in a degree of longitude. 216 X 60-' = 802.83912 the number of miles in the Difference of Longitude. 4-i.t JDUU BY CASE I. By the Table of Miles in a degree of Longitude in every Latitude, on page 9, Latitude 32 17' gives 50.72405 the number of miles in a degree of longitude, as per Example VI., page 14. 302 83912 X 50 72495----: 256.02499 the number of miles that the ships are Distant from each other = 256. 60 Answer. QUESTION IV. A ship having run due East or West for three days, at the rate of 5 knots an hour (sailed a Distance of 360 miles) finds she has made a Difference of Longitude of 8 16' (= 496 miles); on what parallel of Latitude did she sail f BY CASE III.------= 43.54839 the number of miles In a degree of longitude In the latitude of the parallel on which TM the ship sailed, Tiz. 43 28' North or South, as per Example XV., page 22. Answer. MIDDLE LATITUDE SAILING. "when a ship sails due North or due South, she keeps on the same meridian, and therefore does not change her longitude, and her distance run is the difference of latitude; consequently her place is easily determined by the latitude left and the difference of latitude. Agai...
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- PublisherRareBooksClub.com
- Publication date2012
- ISBN 10 1130905314
- ISBN 13 9781130905311
- BindingPaperback
- Number of pages32
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