The New American Practical Navigator: Being an Epitome of Navigation ...

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E. & G.W. Blunt, 1852 - Navigation - 777 pages
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Contents

Table of solutions of the various cases of trigonometry
37
A short introduction to astronomy and geography
45
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
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
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
To find the distance of the land in order to calculate the dip
155
To calculate the true amplitude 59
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
232
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
To correct the dead reckoning
263
Explanations of sea terms
288
Evolutions at tea
304
Ts find the meridional parts corresponding to any degree and minute
7
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
133
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 kc 231
231
To find the suns right ascension 237
237
Variation of the suns altitude in one minute from noon
240
To reduce the numbers of Table XXXII to other given intervals from noon 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
change of 100 seconds in its declination 251
251
Third correction in Lyonss improved method 275
275
Maranham
338
ANAMBAS ISLANDS 365
349
BANCAIsland 864
380
Ciialogce of the Tables with examples of the uses of those not explained in other
392
To find the horary motion of the moon
400
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
423
To find the longitude of a place by measuring the distance of the moon
429
Given the right ascension and declination to find the longitude
435
To find the longitude of a place from the beginning or end of a solar
443
CAPE VERDE ISLANDS 854
448
CHINA Southern coast 360
461
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