pl23_theb1487.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23theb1487jpgDescription
Taking a bar check to calibrate fathometer.Note transducer clamped to side of boat - officer on right monitoring fathometer
Credit
Personnel of NOAA Ship PEIRCE 1985
Display Date
Jul-85
Location
Penobscot Bay, Maine
Collection
Historic Coast & Geodetic Survey
Keywords
Charting
Boats
Skiff
Sounding