Hydrographic survey operations on the USS (aka USC&GS) BACHE. Note cgs00622 and cgs00627. Tall signal on dune used for offshore navigation by three-point sextant fix.
Image ID: cgs00629, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: Virginia Photo Date: 1916 Credit: NOAA Central Library Historical Imagery • High Resolution Photo Available
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