PREFACEAdvertisementsINDEX
- A
- Acceleration for longitude, [91]
- Amplitude, [12], [97]
- Aphelion, [8]
- Apogee, [139]
- Astronomical triangle, [102]
- Azimuth, [12], [96]
- altitude, [98]
- Weir’s diagram of, [98]
- Azimuths and amplitudes, [93]
- C
- Calendar, [64]
- Celestial latitude, [14]
- longitude, [14]
- Chart, contours, [155]
- corrections, [151]
- scales, [152]
- Charts, [146]
- datum, [155]
- diagrams of symbols, [156]
- fathom curves, [158]
- information on, [154]
- symbols, [152]
- Chronometer time, necessity of accuracy in, [87]
- Circles of equal altitudes, [110]
- Circum-meridian altitude, [82]
- Compass, [93]
- deviation of, [94]
- error of, [94]
- naming of, [99]
- Coordinates, [9]
- Corrections for observed altitudes, [68]
- D
- Day lost and day gained, [37]
- Dead reckoning, [1]
- Declination, [15]
- daily change of, [24]
- Deviation, naming of, [100]
- Dip, [72]
- Double altitude problem, [120]
- E
- Earth’s orbit, [8]
- revolution around the sun, [20]
- Eclipses, [141]
- Ecliptic, [14]
- Equal altitude circle, [109]
- Equal altitude method, [104]
- Equation of Time, [56]
- diagram of, [62]
- error due to obliquity, [60]
- Equinoctial colure, [26]
- Ex-meridian altitude, [82]
- bodies below the pole, [86]
- planets, [86]
- stars, [86]
- F
- First point of Aries, [14], [26]
- G
- Gnomonic chart, [150]
- Great circles, [10], [17]
- Great-circle sailing, [150]
- Greenwich mean time on navigator’s watch, [54]
- H
- Horizon, rational, [11], [75]
- sensible, [12], [73]
- visible, [11], [73]
- Hour circles, [13]
- I
- Index correction, [68]
- J
- Johnson’s method, [123]
- diagrams, [126]
- K
- Kepler’s Law, [56]
- L
- Latitude, [78]
- by Polaris, [88]
- factor, [129]
- formula for finding, [80]
- Laying a course, [96]
- Lights, characteristics, etc., [153]
- Longitude, [101]
- and time, [102]
- by equal altitudes, [104]
- factor, [125]
- prime vertical, [103]
- stars and planets, [105]
- Lunar cycle, [143]
- M
- Mean time into sidereal, [106]
- Mercator Projection, [146]
- diagram, [147]
- Meridian altitude, [78]
- time to observe a star, [81]
- to report at noon, [81]
- Meridional parts, [149]
- Middle latitude sailing, [4]
- Mizar, [89]
- Moon, [139]
- full, [140]
- harvest, [143]
- new, [140]
- Moon’s declination, [143]
- diagram, [144]
- nodes, [143]
- retardation, [142]
- revolution, [140]
- right ascension, [142]
- N
- Nadir, [11]
- Napier’s diagram, [96]
- Nautical astronomy, [5]
- New navigation, [102], [129]
- advantages of, [133]
- diagrams of, [135], [137]
- finding position without plotting on chart, [138]
- illustrated examples, [134]
- Notices to mariners, [151]
- Nutation, [32]
- P
- Parallax, [75]
- horizontal, [76]
- moon, [77]
- Parallel sailing, [3]
- Perigee, [139]
- Perihelion, [8]
- Plane sailing, [2]
- Planets, [6-7]
- Polaris, [88]
- diagram, [90]
- time to take sight, [92]
- Precession of the equinoxes, [27]
- causes of, [31]
- Prime vertical, [12]
- observations on, [103]
- Q
- Quadrature, [140]
- R
- Refraction, [71]
- Rhumb line, [149]
- Right ascension, [26], [50]
- S
- Sailings, [3]
- Seasons, the, [20]
- Semi-diameter, [69]
- Ship’s time, [40]
- Sidereal time, [43]
- (local) how to obtain, [52]
- longitude from, [53]
- year, [66]
- Solar system, [5]
- Summer, length of northern and southern, [25]
- lines, as chords and tangents, [112]
- when under the sun, [121]
- Sumner, Capt., his experience, [107]
- line, displacement of, [118]
- tangent method, [114]
- value of, [115]
- method, [107]
- Sun’s change in azimuth, [120]
- eastward movement, [16]
- T
- Time diagram, [51]
- Tropical year, [66]
- V
- Vega as a pole star, [31]
- Vernal equinox, [20]
- dates of, [67]
- Vertical circles, [12]
- W
- Weir’s azimuth diagram, [98]
- Z
- Zenith, [10]