## The improved practical navigator, revised by T. Kirby |

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added altitude anchor angle Answer apparent arch base bearing called Cape centre circle co-sine coast column compass contained corrected corresponding course departure diff difference of latitude difference of longitude Dift Dep Dift Lat direct dist distance divided division draw east equal EXAMPLE extent fathoms feet figure given gives glass greater Greenwich half hand haul high water horizon keep length less limb logarithm lower marked means measured meridian method middle miles minutes moon moon's Nautical nearly noon object observation opposite parallel passing perpendicular plane points radius refraction remainder rising RULE sail scale ship ship's shore side sine situation stands star subtract sun's sun's declination Suppose Table taken tide true turn variation wind zenith