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Optical Scanners and Deflectors
About Stealth Acoustics
John CLOUD, Historian, PhD in Geography, University of California at Santa Barbara, 2000, National Oceanic and Atmospheric Administration, HI, NOAA, NOAA Central Library
NOAA Photo Library > Collections > Coast & Geodetic Survey > Nautical Charting > Soundings > Acoustic Sound Systems
Sensors, Free Full-Text
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NOAA Photo Library > Collections > Coast & Geodetic Survey > Nautical Charting > Soundings > Acoustic Sound Systems
The Acoustic Sensor of the Dorsey Fathometer (model 808) mounted on one