pl23_theb4129.jpg
![Bottom mounted sidescan sonar system theb4129.jpg Bottom mounted sidescan sonar system](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4129.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23theb4129jpg-0Description
Bottom mounted sidescan sonar system.
Collection
Historic Coast & Geodetic Survey
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