The improved practical navigator, revised by T. Kirby |
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added altitude anchor angle apparent arch base bearing called Cape centre circle Co-sec co-sine coast column compass contains corrected course declination Degs departure diff difference of latitude difference of longitude Dift Lat direct dist distance Ditto divided draw east England equal EXAMPLE extent fathoms feet figure given gives glass greater Greenwich half hand haul Head horizon Island Isle keep land length less limb logarithm lower marked means meridian middle miles minutes moon moon's nearly noon object observation opposite parallel passing plane Point radius refraction Rising rocks rule sail scale Secant ship ship's shore side sine situation stands star subtract sun's Suppose Table taken Tang tangent true turn variation wind