Title block to "Offshore Soundings south of Cape Henlopen." These were among the first offshore soundings to show the continental shelf break.

Image ID: cgs05062, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Delaware, Offshore
Photo Date: 1847
Credit: NARA C&GS Colllection

Category: Coast and Geodetic Survey/Archive Seafloor Mapping/Seafloor Mapping/

• High Resolution Photo Available