Tables of mast-head angles for five feet intervals from 30 to 280 feet and varying distances from a cable's length to four miles with their application to nautical surveying; also the determination of distance by sound, with an example., by A. B. Becher

Title:	Tables of mast-head angles for five feet intervals from 30 to 280 feet and varying distances from a cable's length to four miles with their application to nautical surveying; also the determination of distance by sound, with an example.
Author:	Becher, A. B. (Alexander Bridport), 1796-1876
Note:	J.D. Potter, 1854

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Subject:	Navigation -- Tables
Subject:	Tables
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