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Coast Survey chart showing density of soundings from original survey used to to construct nautical chart Picture

Coast Survey chart showing density of soundings from original survey used to to construct nautical chart

Coast Survey chart showing density of soundings from original survey used to to construct nautical chart. Comparing survey of Ponce Harbor, Puerto Rico to published chart of same. In: “Nautical Charts” by George Rockwell Putnam, 1908. 162 pp.

Photo Date: 1908

Author: NOAA

License: Public Domain Mark 1.0 (Public domain)
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Added On
16th October 2015
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