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 541
Fig. II. 512 HYDROGRAPHICAL SURVEYING [chap, xxi AREA B E Clear … Fig. Ill-—Illustrating a Beacon Triangulation connected by Station-PointerFixes and True Bearings to triangulated Shore Objects at Night byTwo Ships simultaneously intervisible at Beacons i and 13 by means ofSearchlights. The Co-ordinates of the Shore Objects are known. CHAP. XX r] SCHEME OF…
Hydrographic surveying · Nautical charts
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
