The New American Practical Navigator: Being an Epitome of Navigation; Containing All the Tables Necessary to be Used with the Nautical Almanac in Determining the Latitude, and the Longitude by Lunar Observations, and Keeping a Complete Reckoning at Sea ... The Whole Exemplified in a Journal, Kept from Boston to Madreira, in which All the Rules of Navigation are Introduced ... With an Appendix, Containing Methods of Calculating Eclipses of the Sun and Moon, and Occultations of the Fixed Stars ...

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E. & G. W. Blunt, 1855 - Nautical astronomy - 779 pages
 

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Contents

Table of solutions of the various cases of trigonometry
37
A short introduction to astronomy and geography
45
a star
46
Examples in geography
51
Questions to exercise the learner in plane sailing
58
A table showing how many miles of meridian distance correspond to a degree of longi
64
Table to correct the middle latitude
76
Table of solutions of the various cases of Mercators sailing
79
To work a compound course by middle latitude or Mercators sailing
86
64
90
To find the difference between the true and apparent directions of the wind
97
Gauging
103
To survey a coast in sailing along shore
109
PAGE
114
To reduce soundings taken at any time of the tide to low water
115
EGYPT Mediterranean
118
Tides
120
Of the logline and halfminute glass
126
Description and use of a sextant of reflection
133
Verification of the mirrors and colored glasses
137
Verification of the mirrors and colored glasses
143
To observe the transit of any heavenly body over the meridian
150
Refraction of the heavenly bodies
153
To find the distance of the land in order to calculate the dip
155
To calculate the true amplitude
159
To find the latitude by a meridian altitude of the sun or a fixed star
166
Augmentation of the moons semidiameter
167
To find the latitude by the moons meridian altitude
171
To find the correction and logarithm of a lunar observation when
179
First method of calculating double altitudes
180
Third method
189
Fifth method to find the latitude from altitudes and distances used in taking a lunar
197
To find the latitude by the mean of several altitudes of the sun taken near noon by
204
Examples to exercise the learner in finding the mean time
210
To find the correction and logarithm of a lunar observation depending
213

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