New American Practical NavigatorU.S. Government Printing Office, 1841 |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
anchor angle apparent altitude azimuth calculated Cape centre chronometer circle column compass Corr corresponding Cosec cosine courses sailed degrees Diff difference of latitude difference of longitude Dist draw elapsed equal equator error EXAMPLE feet finding the latitude fore observation Funchal given Greenwich half-sum horizon glass horizontal parallax hour angle hypotenuse instrument latitude and departure line of numbers line of sines logarithm mean meridian altitude method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude obtained parallax parallel Parallel Sailing passing the meridian perpendicular Plane Sailing polar distance pole quadrant radius 90 refraction right ascension rule sea account secant semidiameter sextant ship ship's side star subtract sun's declination sun's lower limb Suppose taken tangent telescope traverse table triangle true altitude true amplitude true distance variation wind wires zenith distance