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NOAA Photo Library Image - theb2155

808 fathometer transducer. Hydrographic Manual 1942. Called first portable sonic sounding device. First acoustic sounding device used on C&GS sounding boats for shallow water. First use of shallow water fathometer continuous records by C&GS

Image ID: theb2155, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Credit: NOAA Central Library

Category: Charting/Soundings/Electronic/

High Resolution Photo Available

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Last Updated:
November 10, 2017