## 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 Madreira, in which All the Rules of Navigation are Introduced ... With an Appendix, Containing Methods of Calculating Eclipses of the Sun and Moon, and Occultations of the Fixed Stars ... |

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### Common terms and phrases

angle apparent altitude azimuth bearing calculation Cape central index centre chord chronometer circle column compass corresponding Cosec cosine courses sailed degrees diameter diff difference of latitude difference of longitude divided draw equal equator error EXAMPLE extent will reach feet given Greenwich half Half-sum horizon glass hour angle hypotenuse instrument latitude and departure line of numbers line of sines logarithm lower limb marked mean meridian altitude meridional difference method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude parallax parallel Parallel Sailing passing the meridian perpendicular Plane Sailing points polar distance pole quadrant radius 90 refraction right ascension rule screw sea account secant semidiameter sextant ship ship's side sine course star subtracted sun's declination Suppose taken tangent telescope triangle true altitude true distance variation wind wires zenith distance