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"Echometre" record obtained by the French liner S.S

“Echometre” record obtained by the French liner S.S. De Grasse when crossing over the head of a canyon on Georges Bank. Such records reinforced the view that vessels could navigate by using bathymetry. Accordingly, the United States Coast and Geodetic Survey embarked on a project to map the continental slopes and shelves to help guide mariners into United States ports.

Photo Category: Exploration - Maps

Author: NOAA Central Library Historical Collection/ NOAA

License: Public Domain Mark 1.0 (Public domain)
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Added On
18th October 2015
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