Transactions of the American Philosophical Society 6, Pt.1-2
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To quickly assess the difficulty of the text, read a short excerpt:
sailed from 42° 25' longit. 15° 6' W. course N. 5 pts. E.
To latit. 44 48 diff. long. 5 E. distance 258 miles, To latit. 46 20 diff. lone. 3 20 E. distance 167 miles.
Gives the required diff. longitude 8° 20' E and dist. 425 miles.
CASE IV.
Given the Latitudes of two Places, and the Distance bclwcen them tojind the Course and Difference of Longitude.
EXAMPLE.
A ship from St. Alban's Head, in latitude 50° 35' N. and longitude 2° 5' W. sailed 171 miles upon a direct course be- tween the S. and W.... and by observation is found to be in lati- tude 48° 26' N. required the course steered, and longitude come to?
1st. Set the center C of the Index on tlie given parallel of latitude 50° 35' (on the 7-iglit hand, because sailing towards the Equator) and turn the distance line until tlic given distance 171 NAVIGATION CHART, &C, 307 miles falls on the parallel of 48° 26', exlejided equally on each side the central Ime ; when the course will be found S. 41° W. and the ditference of longitude '■1' 50'.
What to read after Transactions of the American Philosophical Society 6, Pt.1-2?
You can find similar books in the "Read Also" column, or choose other free books by American Philosophical Society to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
sailed from 42° 25' longit. 15° 6' W. course N. 5 pts. E.
To latit. 44 48 diff. long. 5 E. distance 258 miles, To latit. 46 20 diff. lone. 3 20 E. distance 167 miles.
Gives the required diff. longitude 8° 20' E and dist. 425 miles.
CASE IV.
Given the Latitudes of two Places, and the Distance bclwcen them tojind the Course and Difference of Longitude.
EXAMPLE.
A ship from St. Alban's Head, in latitude 50° 35' N. and longitude 2° 5' W. sailed 171 miles upon a direct course be- tween the S. and W.... and by observation is found to be in lati- tude 48° 26' N. required the course steered, and longitude come to?
1st. Set the center C of the Index on tlie given parallel of latitude 50° 35' (on the 7-iglit hand, because sailing towards the Equator) and turn the distance line until tlic given distance 171 NAVIGATION CHART, &C, 307 miles falls on the parallel of 48° 26', exlejided equally on each side the central Ime ; when the course will be found S. 41° W. and the ditference of longitude '■1' 50'.
What to read after Transactions of the American Philosophical Society 6, Pt.1-2?
You can find similar books in the "Read Also" column, or choose other free books by American Philosophical Society to read onlineMoreLess
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