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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added altitude angle Answer apparent applied base bearing calculated called central centre circle co-sine column compass correction corresponding course declination departure Diff difference of latitude difference of longitude direction Dist distance divided draw east equal equator error EXAMPLE extent feet figure fixed given gives glass greater Greenwich half hand Hence horizon length less limb logarithm longitude lower manner marked mean measured meridian method miles minutes moon moon's multiplied Nautical Almanac nearly noon object observation obtained opposite parallax parallel passing perpendicular plane points radius reach refraction right ascension rule sails scale secant ship side sine square stand star subtracted sun's Suppose Table taken tangent triangle true turned variation watch wind zenith