The New American Practical Navigator

anchor angle arch azimuth barratry bearing cable calculated Cape central index centre chord circle Co-secant co-sine Co-tang column compass correction corresponding decimal degrees Degs Diff difference of latitude difference of longitude Dist divided draw equal equator error EXAMPLE extent will reach feet find the course Funchal given Greenwich half sum horizon glass hypotenuse instrument insured Island line of numbers line of sines logarithm Long meridian altitude method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude parallax parallel Parallel Sailing passing the meridian perpendicular Plane Sailing port quadrant radius 90 refraction right ascension rule screw sea account Secant semidiameter sextant ship ship's side Sine Course slider star staysail subtracted sun's declination Table taken tang tangent telescope triangle true tude variation wind zenith distance