First C&GS electronic base line measurements.
Base crossings by ship over Shoran network.
Minimum value from two range-range stations gives distance.
C&GS Ship EXPLORER
Image ID: theb1681, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Alaska, Bering Sea
Photo Date: 1951
Credit: C&GS Season's Report 1951-92
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
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June 10, 2016