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

E. & G.W. Blunt, 1852 - Nautical astronomy - 777 pages

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LATITUDES AND LONGITUDES	9

Signs and abbreviations used in this work хгі	12

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

Table of solutions of the various cases of trigonometry	37

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

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	76

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

To measure the angular distance of the moon from a star by a circle 142 1	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

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

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 sea	304

To find the time of the moons passing the meridian	172

Variation of the suns altitude in one minute from noon	239

Longitudes and latitudes of the fixed stars	245

change of 100 seconds in its declination 251	251

To change solar time into sideral time	329

Oregon	361

APO BANK	369

ARABIA coast	380

CATALOGUE OF THE Tables with examples of the uses of those not explained in other	385

Addition and subtraetion 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

Copyright

Title	The New American Practical Navigator: Being an Epitome of Navigation ...
Author	Jonathan Ingersoll Bowditch
Edition	21
Publisher	E. & G.W. Blunt, 1852
Original from	the New York Public Library
Digitized	Jul 17, 2009
Length	777 pages

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