American Practical Navigator: An Epitome of Navigation and Nautical Astronomy

apparent azimuth bearing body celestial Center chart Chro chronometer Church circle Coast column Corr correction corresponding cosec course dead reckoning declination departure deviation Diff difference of latitude difference of longitude direction Dist distance earth east equator EXAMPLE Extreme flagstaff given Greenwich mean h. m. h. m. ft Harbor Head horizon hour angle instrument intersection Island Islet Jolo Islands light Light-house logarithm Long longitude Lunar Distance magnetic MARITIME POSITIONS measured meridian altitude method miles moon Nautical Almanac navigator Neap noon object Observatory parallax parallel plane Point pole Port POSITIONS AND TIDAL refraction right ascension River Rock Sailing sextant ship ship's sidereal sight station subtract Summit Sumner line sun's Table telescope theodolite TIDAL DATA tides transit true vertical vessel W. H. W. L. W. Spg wind