Hydrographical surveying : a description of means and methods employed in constructing marine charts (1920)
Wharton, W. J. L. (William James Lloyd), 1843-1905, Field, Arthur Mostyn, 1855- · London : J. Murray · leaf 488
triangles A X C, X Y C, CHAP. XX.] PLOTTING 459 and so on for the remaining points, confining the calculationto what is necessary to lay them down. The series of jDoints might, of course, be plotted simply ontheir relative angular measurements and distances, but thearbitrary plotting points afford… … Fig. no Writing in the Hydrographic Annual, Rear-Admiral F. C.Learmonth, C.B., gives a further illustration of the use of anarbitrary plotting point, X in Fig. Ill, which shows a tri-angulation suddenly contracting in width to a long narrowstrait, in which sextant angles alone are possible. In…
Hydrographic surveying · Nautical charts
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