pl23_map00079.jpg

Echometre record obtained by the French liner S

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Description

Echometre record obtained by the French liner S.S. De Grasse when crossingover the head of a canyon on Georges Bank. Such records reinforced the viewthat vessels could navigate by using bathymetry. Accordingly, the United StatesCoast and Geodetic Survey embarked on a project to map the continental slopesand shelves to help guide mariners into United States ports.

Credit

NOAA Central Library Historical Collection

Collection

Voyage to Inner Space
History of Oceanography Collection
Bathymetric Maps Collection

Keywords

Exploration
Maps