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 544
Ship YAt single ^ Case I. Three Ships present X. Y. and Z.X being the CcntroUing Vesseland not less than zoo feet long. Ship Z »t single ■t Fig. v.—Obtaining the Scale provisionally. CHAP. XXI.] OBTAINING THE SCALE 515 Case 2. Two Ships present. X and Y. X being the Controlling Vesseland not less… … Ship Y c<,^=-^^-?rrix1r:^rrr-ir^r^ Ship XAt single -t \ I I Under weigh Scale of MilesT 3 Fig. VI —Obtaining the Scale provisorally. iVPPENDIX. A..— To prove that Tan Convergency = Tan Dep . Tan Mid Lat. Fig. 117.
Hydrographic surveying · Nautical charts
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