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History of Navigation
THE PRACTICE OF NAVIGATION
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accuracy adjustment aids to navigation Air Almanac altitude appear approximately astronomical azimuth angle buoys called celestial body celestial equator celestial horizon celestial meridian celestial navigation celestial sphere chart chronometer circle compass heading computed correction dead reckoning declination degaussing determined deviation diagram difference direction distance earth error Flinders bar given great-circle gyro gyrocompass height of eye horizon hour angle Hydrographic indicated instrument interpolation intervals knots latitude line of position located longitude magnetic compass magnetic field magnetic heading maximum means measured Mercator Mercator chart meridian angle method moon motion Nautical Almanac nautical miles observer orbit parallel perpendicular planets plotting polar pole precession prime vertical projection range refraction rhumb line rotation sailing scale sextant ship shown in figure signals solution speed spin axis stars tabulated tangent tide tion triangle vertical vessel zenith