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https://www.noaa.gov/media/digital-library-photo/pl23theb3797jpg-0Description
Sounding machine - detail view.On the PATTERSON (Image credit: C&GS; Season's Report Miller 1913-59)
Credit
C&GS; Season's Report Miller 1913-59
Display Date
October, 1913
Location
Unimak Island area, Aleutian Islands, Alaska Photo
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Bathymetry - Mapping the Features
Pre-1920
Keywords
Charting
Soundings
Bathymetry
Mechanical