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 Madreira, 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 ...

E. & G. W. Blunt, 1855 - Nautical astronomy - 779 pages

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	33

Table of solutions of the various cases of trigonometry	37

A short introduction to astronomy and geography	45

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

Examples in geography	48

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

Meridional parts	78

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

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

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

IV	208

To correct the dead reckoning	263

Explanations of sea terms	288

Evolutions at sea	304

Right ascensions and declinations of the fixed stars	80

A Parallax in altitude of a planet	86

To find the correction and logarithm of a lunar observation when	97

89	127

For finding the latitude by two altitudes of the	148

XXIV	160

Logarithms of numbers	169

Variation of the suns altitude in one minute from noon	239

Longitudes and latitudes of the fixed stars	245

Logarithms in Lyonss improved method 253	253

Third correction in Lyonss improved method 275	275

ANAMBAS ISLANDS	356

ANDAMAN	362

APO BANK	369

ARABIA coast	380

CATALOGUE 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

Copyright

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	Nathaniel Bowditch
Edition	25
Publisher	E. & G. W. Blunt, 1855
Original from	the New York Public Library
Digitized	Nov 6, 2009
Length	779 pages

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