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808 fathometer transducer Picture

808 fathometer transducer

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

Photo Category: Charting - Soundings - Electronic

Author: NOAA Central Library/ NOAA

License: Public Domain Mark 1.0 (Public domain)
478 x 640 89.35 KB
1084 x 1452 681.30 KB
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Added On
18th October 2015
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