Practical Navigation

added almanac altitude angle apparent applied bearing Bermuda called chart chronometer circle clouds coast column compass Correction Cosine course dead reckoning declination departure deviation Diff difference direction distance divided East equal equator error example falls feet figures give given greater Greenwich half Haversine head horizon increasing indicated known latitude less light logarithm longitude lower magnetic marked mean measured meridian method miles minutes moon move nautical navigator nearly noon North observation opposite parallax parallel pass planets pole port position refraction result right ascension rule sailing seconds seen ship ship's shows side sight signal Sine South star storm subtract sun's taken tide transit true True Altitude turn variation vessel weather West wind