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https://www.noaa.gov/media/digital-library-photo/pl23theb3817jpg-0Description
Trincomalee Canyon, Sri Lanka.Surveyed by PIONEER.Survey made during International Indian Ocean Expedition (Image credit: NOAA Central Library )
Credit
NOAA Central Library
Display Date
1964
Location
Sri Lanka, Indian Ocean Photo
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Bathymetry - Mapping the Features
1920-1985
Keywords
Charting
Soundings
Bathymetry
Acoustic