The Improved Practical Navigator: Containing All Necessary Instruction for Determining the Latitude by Various Methods, and for the Ascertaining the Longitude by Lunar Observations, in a Complete Epitome of Navigation. To which is Added a Number of New Tables
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anchor angle apparent altitude arch centre chord circle cloz Co-sec co-sine Co-tang Coaſt column compass correction course and distance decimal degrees Degs diff difference of latitude difference of longitude Diſt Ditto east ecliptic ExAMPLE extent will reach fathoms feet given to find Greenwich haul high water horizon hypothenuse Iſland Iſle line of numbers line of sines logarithm meridian meridional difference miles moon moon's Nautical Almanack noon parallax parallel perpendicular plane Plane Sailing Point quadrant radius 90 refraction remainder right ascension right line sail scale Scotland secant semidiameter Sextant ship ship's Shoal side star star's stay-sail subtracted sun's declination Sun's true Table Tang tangent toš triangle Trigonometry true altitude wind zenith distance zoš