The 64-millimeter copper sphere (left) and 38.1-millimeter tungsten carbide sphere (right) used during NOAA Ship Okeanos Explorer Simrad EK60 split-beam transducer calibration.
Calibration Spheres
Image courtesy of the Gulf of Mexico Technology Demonstration.
The 64-millimeter copper sphere (left) and 38.1-millimeter tungsten carbide sphere (right) used during NOAA Ship Okeanos Explorer Simrad EK60 split-beam transducer calibration. Download larger version (jpg, 2.7 MB).
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