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![Robert Williams with first Fessenden oscillator on the tug Susie D theb2146.jpg Robert Williams with first Fessenden oscillator on the tug Susie D](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2146.jpg?itok=_bl4vQs8)
Description
Robert Williams with first Fessenden oscillator on the tug Susie D.First successful test of sonic system.Looking for icebergs but also found bottom (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1914
Location
North Atlantic
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Soundings
Acoustic Sound Systems
Keywords
Charting
Soundings
Electronic