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![Figure 69 ship4367.jpg Figure 69](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4367.jpg?itok=L5o3IvDX)
Description
Figure 69. Expendable bathythermograph made by Sippican Corporation. Theseinstruments pay out a copper wire upon descent that has varying conductivity asthe temperature changes. Depth is determined as a function of the rate ofdescent of the instrument. These are used by ships while underway to determinethe temperature profile of the water column and corresponding velocity profile. (Image credit: Oceanographic Museum of Monaco | Y. Berard)