Image of an ES120-7c transducer, one of the models mounted on the hull of NOAA Ship Okeanos Explorer. This transducer emits a sound centered around 120 kilohertz into the water column and receives echoes back from anything with a density and/or sound speed difference from the surrounding water.
ES120-7c Transducer
Image courtesy of Simrad. Download larger version (jpg, 231 KB).
Image of an ES120-7c transducer, one of the models mounted on the hull of NOAA Ship Okeanos Explorer. This transducer emits a sound centered around 120 kilohertz into the water column and receives echoes back from anything with a density and/or sound speed difference from the surrounding water.
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