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; Illustrated by Proper Rules and Examples ... Dictionary of Sea Terms; and the Manner of Performing the Most Useful Evolutions at Sea: with an Appendix, Containing Methods of Calculating Eclipses of the Sun and Moon, and Occultations of the Fixed Stars ...

E. & G. W. Blunt, proprietors ... Stereotyped at the Boston Type and Stereotype Foundry, 1845 - Nautical astronomy - 451 pages

II	2

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

III	33

Table of solutions of the various cases of trigonometry	37

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 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

A short introduction to astronomy and geography	45

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 azimuth	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

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 sea	304

VI	77

Right ascensions and declinations of the fixed stars	86

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

For turning degrees and minutes into time and the contrary	131

For finding the latitude by two altitudes of the	160

Logarithms of numbers	169

Variation of the suns altitude in one minute from noon	240

Reductions of latitude and horizontal parallax	246

Table showing the variation of the altitude of an object arising from	251

CATALOGUE OF THE TABLES with examples of the uses of those not explained in other	396

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	442

To find the longitude of a place from the beginning or end of an occul	447

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; Illustrated by Proper Rules and Examples ...
Author	Nathaniel Bowditch
Edition	15
Publisher	E. & G. W. Blunt, proprietors ... Stereotyped at the Boston Type and Stereotype Foundry, 1845
Original from	the New York Public Library
Digitized	9 Sep 2015
Length	451 pages

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