A Complete Epitome of Practical Navigation ...

apparent azimuth bearing centre chart chronometer circle co-latitude Co-sec column compass course Corr correction course and distance dead reckoning decl declination departure deviation Diff difference of latitude difference of longitude direction dist distance run earth east equal equator equinoctial Example feet given Greenwich date Greenwich mean heavenly body height of eye horizon hour angle index error interval leeway logarithm magnetic course meridian altitude miles millibars moon moon's Nautical Almanac needle noon Northern Hemisphere object observed altitude parallax parallel plane plane sailing point of Aries polar distance pole position prime vertical quadrant refraction required the latitude right angles right ascension sailing set and drift sextant ship ship's head side sidereal star Star's subtract tide Traverse Table triangle true altitude true course variation vernier wind zenith distance ΙΟ