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The New American Practical Navigator: Being an Epitome of Navigation ...
No preview available - 2017
added altitude angle apparent Apparent Altitude bearing calculated called Cape central centre chronometer circle column compass correction corresponding Cosecant Cosine course declination departure Diff difference of latitude difference of longitude direction Dist distance divided draw east equal equator error EXAMPLE extent feet figure given gives glass Greenwich half horizon Island less light limb logarithm Long longitude lower manner marked mean measured meridian method middle latitude miles minutes moon moon's Nautical Almanac nearly noon object observation obtained parallax parallel passing perpendicular planet radius refraction right ascension rule Sailing Secant ship side sine star subtracted sun's Suppose Table taken tangent telescope third triangle true variation zenith