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pl23_theb2154.jpg

Leo Otis Colbert with Dorsey Fathometer No

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb2154jpg

Description

Leo Otis Colbert with Dorsey Fathometer No. 3.The first effective shallow and deep water echosounder.Operator watched flashing light.On the ship OCEANOGRAPHER

Credit

NOAA Office of Coast Survey

Location

United States East Coast

Collection

Historic Coast & Geodetic Survey

Nautical Charting

Soundings

Acoustic Sound Systems

Keywords

Charting

Soundings

Electronic