Method of finding a ship's position-Definitions-Nautical miles and degrees-Difference of latitude-Difference of longitude-Latitude in-Longitude in / 1
CHAPTER II
The compass-Compass card-Names of points-Liquid compass-Gyro-compass-Logs-Length of the nautical mile and knot-Corrections to compass courses-Variation-Deviation-Leeway-Deviation Table / 6
CHAPTER III
Plane sailing-Parallel sailing-Middle latitude sailing-Mercator's sailing-Traverse sailing-Current sailing-Day's work-Great circle sailing / 23
CHAPTER IV
Sextant-Theory of construction-Vernier-Adjustments of the sextant-Index error-Protractor-Station pointer / 57
CHAPTER V
Charts-Classification of charts-Lay down a place of the ship-To find latitude and longitude in by chart-To construct a Mercator's chart-Gnomonic projection-Chart reading-Characteristics of lights-Signs and abbreviations / 65
CHAPTER VI
Fixing positions-Cross bearings-Table for finding distance by two bearings-Doubling the angle on the bow-4 point bearing-Danger angle / 81
CONTENTS
PART II NAUTICAL ASTRONOMY.
CHAPTER VII.
Solar system-Laws of planetary motion-Definitions-Projection of the celestial sphere. / 1
CHAPTER VIII.
Time-Sidereal day-Apparent Solar day-Mean Solar day-Equation of time-Comparisons of sidereal,mean and apparent intervals of time-Sidereal year-Tropical year-Civil and astronomical times-Ship time and Greenwich time-Standard time. / 9
CHAPTER IX.
Nautical almanac-Correct declination-Correct equation of time-Conversion of time-Right ascension and hour angle-Correction of altitude. / 22
CHAPTER X.
Meridian passage-Star,moon,planet-Meridian altitude of a hearenly body-To find what stars are near meridian. / 40
CHAPTER XI.
Latitude by meridian altitude of sun,star,planet and moon-Latitude by pole star-Latitude by near meridian-Kitchin's ex-meridian altitude table-Artificial horizon. / 48
CHAPTER XII.
Chronometer.-
Winding of chro.-Error and rate of chro.-Comparison of chro-Error of chro.by absolute alt.-Daily comparison-Stowage of chro.-Thermal compensation of chro. / 64
CHAPTER XIII.
Longitude by chronometer-Johnson's method-Star chronometer moon or planet-Latitude and longitude by double chronometer method. / 73
CHAPTER XIV.
Change of bearing-Amplitude-Altitude azimuth-Time azimuth. / 86
CHAPTER XV.
Line of position-Lat.and Long.of geographical position-Circle of position-Sumner's method / 92
CHAPTER XVI.
New navigation-Explanation of use of Ball's altitude table. / 96
CHAPTER XVII.
Terrestrial magnetism-Changes in the rariation-Action of freely suspended needle-Experiments with a bar of soft iron. / 103
CHAPTER XVIII.
Semicircular deviation-Quadrantal deviation-Constant deviation-Causes of several parts of deviation-Hard iron-Soft iron-Deviation by distant object-Deviation by reciprocal bearings-Deviation by bearings of a heavenly body-Deviation by graphic method-Deviation table. / 106
CHAPTER XIX.
Co-efficients A,B,C,D and E-Residual error-Semicircular deviation-Quadrantal deviation-To find the approx.co-efficients-Heeling error-Adjustment of compass-correction by deflector-correction of heeling error. / 113
CHAPTER XX.
Tides.-
General description-Daily changes-Fortnightly changes-moon's age-Heights of spring and neap tides-Vulgar establishment of the port-Rules for finding time of high water. / 125
CHAPTER XXI.
Constellations-Magnitudes of stars-Greek alphabet-Zodiac-Finding the stars. / 130
