Contour map of Gulf of Mexico as sounded by the C&GS; Steamer BLAKEbetween 1873 and 1875. Over 3,000 soundings went into this chart, most of thedeep water soundings beween taken by the Sigsbee Sounding Machine. This was thefirst realistic bathymet
4/3/2019 10:36:27 AM
Date: 1878
Credit: NOAA Central Library
Subject: Charting
Subject: Soundings
Subject: Bathymetry
Subject: Mechanical
Subject: