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 322
ea, cut the former arc in d (21draw the given difF. lat. ad, and the required departure db : Thenthe port failed from, A one fhips place, b the others. In the triangle acb, find (343) the ^.cab = 780 24, and /LCBA51* 56; the fide ab will be found 39,1 miles. In the triangle adb, wlab, ad, are… … t/.y^e1?/J aat//i Jtye <iy<z. PLANE SAILING. 293 Question IV. From two ports bearing NW. b. N. and SE. b. S.■wo Jhips fail, the one NE. the other N b. E.; they meet, and find thathe fum of their dijlances added to the dijiance of the ports made 148 miles:Required the dijiance of the ports,…
Navigation · Nautical astronomy · Fortification
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