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CHAPTER PAGE I The Terrestrial Sphere
Maps Charts and Plotting Sheets
Charts and Navigational Accessories
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American Nautical Almanac azimuth Bowditch celestial body celestial sphere channel chronometer Coast column headed Corr correction cover latitudes D.R. position declination degrees departure determine deviation diagram difference of latitude difference of longitude direction earth east equator feet Flash given graduated arc Greenwich civil Harbor height of eye hence horizon hour circle Illustrative example index arm January knots Light Lists Lighthouse Lightship line of position located logarithm longitude lower limb magnetic course mean sun measured Mercator chart meridian method miles minute of arc minutes moon navigator observed obtained parallax parallel plane sailing plotting sheet Polaris pole problems radio radiobeacon reading rhumb line right ascension sextant sextant altitude ship ship's sidereal Solution spherical triangle star subtracted sun's Table tabulated tangent tides tion true altitude true bearing true course U.S.S. Victory United States Navy variation vertical vessel zenith zone