The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 266
ch column, and siinft the diftance 98 in the column of diftances, ftand 81,5 miles for I: diff. lat.; and 54,45 miles for the departure. By Construction. (681) 1 Draw the meridian ad, and make the quadrantjncp. 2 Make mc =z rhumb of 3 points, and thro c drawi equal to 98 miles. 3Draw bd parallel to… … I find the diff. latitude /Rad = 900 oo 10,00000 TjDift. =98 m. 1,99123 S cof. Co. — 350 45 9,91985 To find the departure. As Rad -z=. 900 oo 10,00000 To Dift. — 98 m. 1,99123 So fm. Cou. =33° 45 9,74474 1 diff. lat. = 81,48 1,91108 To Dep. = 54.45 1.73 597 By Gunters scale. Dm the line of fine…
Navigation · Nautical astronomy · Fortification
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
