## 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 : Illustrated by Proper Rules and Examples ... |

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### Common terms and phrases

apparent altitude azimuth bearing calculation Cape central index centre chronometer circle column compass correct central altitude corresponding Cosec cosine course decimal degrees diameter diff difference of latitude difference of longitude Disl Dist divided draw elapsed equal equator error EXAMPLE feet given Greenwich half half-sum horizon glass horizontal parallax hour angle hypotenuse instrument latitude and departure line of numbers logarithm lower limb lunitidal interval mean meridian altitude meridional difference method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude obtained parallel passing the meridian perpendicular Plane Sailing points polar distance quadrant radius 90 refraction right ascension rule screw sea account secant semidiameter sextant ship side star subtract sun's declination Suppose Table taken tangent telescope transit triangle true altitude true distance true longitude variation wires zenith distance