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![Reading temperatures to determine sound velocity forcorrecting fathometer readings theb4321.jpg Reading temperatures to determine sound velocity forcorrecting fathometer readings](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4321.jpg?itok=tDaPTHCv)
Description
Reading temperatures to determine sound velocity forcorrecting fathometer readings. (Image credit: Family of Captain David M. Whipp, C&GS;)
Credit
Family of Captain David M. Whipp, C&GS;
Display Date
1948
Location
Washington, Grand Coulee Dam, Columbia River
Collection
Historic Coast & Geodetic Survey