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; Illustrated by Proper Rules and Examples ... Dictionary of Sea Terms; and the Manner of Performing the Most Useful Evolutions at Sea: : 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, proprietors ... Stereotyped at the Boston Type and Stereotype Foundry, 1844 - Nautical astronomy - 452 pages
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Contents

Examples in geography
51
Difference of latitude and departure for points 1
52
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
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
To reduce soundings taken at any time of the tide to low water
115
Tides
120
Of the logline and halfminute glass
126
Description and use of a sextant of reflection
133
To measure the angular distance of the moon from a star
137
Verification of the mirrors and colored glasses
143
To observe the transit of any heavenly body over the meridian
149
To find the distance of the land in order to calculate the dip
155
To calculate the true azimuth
160
To find the latitude by a meridian altitude of the sun or a fixed star
166
To find the latitude by the moons meridian altitude
171
To estimate the effects of small errors in the observations
179
Second method
185
Questions to exercise the learner in working double altitudes
193
To find the latitude by one altitude of the sun having your watch previously regulated
200
To find the latitude by the polar star
206
To find the time at sea by the moons altitude
213
To regulate a chronometer by equal altitudes of the sun
219
To find the longitude at sea by lunar observations
225
Examples of lunar observations
233
Second method of working a lunar observation
239
Table of corrections for second differences
245
Method of combining several lunar observations and determining the error of the chro
251
To allow for the change of rate in a chronometer
257
Suns right ascension
77
A Correction for the daily variation of the equation of time VII Amplitudes
78
Right ascensions and declinations of the fixed stars IX Suns rising and setting X For finding the distance of terrestrial objects at sea X ...
86
Refraction of the heavenly bodies XIII Dip of the horizon XIV Suns parallax in altitude 88
88
To find the correction and logarithm of a lunar observation when the sun is used 97
97
To find the correction and logarithm of a lunar observation depending on the moons altitude 98
98
For turning degrees and minutes into time and the contrary 131
131
Proportional logarithms 132
132
For finding the latitude by two altitudes of the sun 148
148
Natural sines and cosines 160
160
Log sines tangents c to points and quarter points 169
169
To find the time of the moons passing the meridian 230
230
To find the variation of the moons declination c 231
231
To find the suns right ascension 237
237
Variation of the suns altitude in one minute from noon 239
239
To reduce the numbers of Table XXXII to other given intervals from r100Il 243
243
Errors arising from a deviation of one minute in the parallelism of the surfaces of the central mirror 244
244
Longitudes and latitudes of the fixed stars 245
245
Reductions of latitude and horizontal parallax 246
246
Aberration of the fixed stars in right ascension and declination 247
247
Nutation in right ascension and declination 248
248
Augmentation of the moons semidiameter found by the nonagesimal 249
249
Equation of second differences 250
250
CATALogue of THE TABLEs with examples of the uses of those not explained in other
385
Addition and subtraction using the signs as in algebra
395
To find the ecliptic conjunction or opposition of the moon and sun
401
To calculate the longitude of a place from the observed beginning
409
To project an eclipse of the moon
415
To project an occultation of a fixed star
421
To find the longitude of a place by measuring the distance of the moon
427
To find the longitude of a place by the moons passage over
434
Theorems in spherics
440
To find the longitude of a place from the beginning or end of an occul
446

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