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![Figure 17 ship4217.jpg Figure 17](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4217.jpg?itok=cH3PwIn4)
Description
Figure 17. Belknap and Sigsbee sounding device, designed by George Belknap onboard the TUSCARORA in 1873-1874. This instrument, which was a modification ofthe Brooke sounder, was subsequently improved by Lieutenant Charles D. Sigsbee,USN, while in command of the Coast Survey Steamer BLAKE in 1878. (Image credit: Oceanographic Museum of Monaco | Y. Berard)