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, 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 ...

Jonathan Ingersoll Bowditch

E. & G. W. Blunt, 1849 - Nautical astronomy - 638 pages

Contents

• Tablo Page 1 Difference of latitude and departure for points: 1
• Demonstration of the most useful propositions of geometry: 7
• Demonstration of theorems in plane trigonometry: 13
• Construction of the plane scale: 18
• Description and use of the sector: 25
• Division by logarithms: 31
• Difference for degrees 17: 33
• 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 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 a: 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
• Description and uses of the circle of reflection: 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 159 4: 161
• To find the time of the moons passing the meridian: 170
• 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
• Journal from Boston to Madeira: 270
• Third correction in Lyonss improved method: 275
• Explanations of sea terms: 288
• Evolutions at sea: 304
• Meridional parts 62: 62
• Suns declination 68: 68
• For reducing the suns declination 72: 72
• Suns right ascension 77: 77
• Amplitudes 78: 78
• Right ascensions and declinations of the fixed stars 80: 80
• Suns rising and setting 84: 84
• For finding the distance of terrestrial objects at sea 86: 86
• 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
• 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: 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

Bibliographic information

• Title: 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 ...
• Author: Jonathan Ingersoll Bowditch
• Edition: 19
• Publisher: E. & G. W. Blunt, 1849
• Original from: the New York Public Library
• Digitized: Dec 2, 2009
• Length: 638 pages