Why removing the water column real time is a bad idea
Posted by Jerry Knisley, Last modified by
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on 21 December 2016 03:04 PM

The bottom track during survey operations provides a visual display of how close the towfish is to the bottom. The nadir area of the sidescan shows the distance to the bottom.

If you see something like this… Speed up or pull the cable in fast!

The altitude window is a good indicator for the boat operator to see as long as the bottom track is stable.