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 bathymetr
4/4/2019 12:53:54 PM
Date: 1878
Credit: NOAA Central Library
Subject: Charting
Subject: Soundings
Subject: Bathymetry
Subject: Mechanical