The New American Practical Navigator: Being an Epitome of Navigation; Containing All the Tables Necessary to be Used with the Nautical Almanac, in Determining the Latitude and the Longitude by Lunar Observations; and Keeping a Complete Reckoning at Sea ... The Whole Exemplified in a Journal Kept from Boston to Madeira ... With an Appendix, Containing Methods of Calculating Eclipses of the Sun and Moon, and Occultations of the Fixed Stars
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a-head anchor angle apparent altitude brace cable calculated centre co-sec co-sine column compass correction corresponding course degrees diameter Diff difference of latitude difference of longitude Dist Distſ equal equator error EXAMPLE feet Funchal given Greenwich half sum haul head sails heave helm horizon glass horizontal parallax Latitude and Departure lee-way line of numbers logarithm mast mean meridian altitude method middle latitude miles mizen moon moon's multiplied Nautical Almanac nearly noon º º object observed altitude ºil parallel passing the meridian perpendicular plane Plane Sailing points radius refraction right ascension rope sails sea account secant semi-diameter sextant ship ship's side sine ſº ſound star staysail subtracted sun's declination tack taken tangent tide topsail triangle true distance variation wind windward zenith distance