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 Madeira ... 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, 1853 - Nautical astronomy - 783 pages
 

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Contents

A short introduction to astronomy and geography
45
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
370
99
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
Verification of the mirrors and colored glasses
137
Verification of the mirrors and colored glasses
143
Tables for correcting the adjustments of a transit instrument
151
Variation of the compass
158
On the dip of the magnetic needle
164
To find the time of the moons passing the meridian
170
To find the latitude by the moons meridian altitude
171
of a planet
177
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 lanar observations
225
Third method of working a lunar observation
242
To calculate the moons altitude
248
To allow for the change of rate in a chronometer
257
To correct the dead reckoning
263
Journal from Boston to Madeira
270
Explanations of sea terms
288
Evolutions at sea
304
Difference for degrees 17
17
Proportional parts 87
87
Refraction of the heavenly bodies 88
88
To find the correction and logarithm of a lunar observation when a star or either of the planets Venus Mars Jupiter or Saturn is observed 89
89
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 finding the third correction of a lunar observation 130
130
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 noon 243
243
Correction of the mean refraction for various heights of the thermometer and barometer 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
change of 100 seconds in its declination 251
251
Third correction in Lyonss improved method 275
275
Correction for a planet whose horizontal parallax is 35
326
ANAMBAS ISLANDS
365
ARABIA coast
380
CatalOGTE 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 find the longitude of a place from the beginning of end of
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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