SCANMAR Trawl Sounder
The Trawl Sounder is a simplified Trawl Eye showing the height of the trawl opening, if the trawl is on the seabed and the distance between the trawl and seabed.It is therefore ideal together with the Door Angle sensors to view simplified trawl geometry, but it’s also ideal with a Trawl Speed/Symmetry sensor to get full control of the trawl geometry. The Trawl Sounder also provides a simplified "sonar" that shows whether it is fish influx and amount of fish.
Mounted in the belly it shows if the height of the trawl is stable, or whether there is a bucket effect that allows fish to escape. It also shows the amount of fish that pass, and along with a Trawl Eye in the trawl opening one can easily see if the fish in the trawl opening ends up in the bag.
