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 543
1m.Stan t from Z Isteuening Haisboro\Lt.Ho.Lt. Occ. ek 30 sec. Vis. 11m,Not \laited fig. IV. — Illustrating a Floating Triangulation connected to the ShoreObjects, where it is desired to fix the Positions of the Lightvessels in add.tion to examining the Area covered by the Beacons, The… … 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…
Hydrographic surveying · Nautical charts
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
