A
Pelagic trawling
Three catch indicators are in use. Sensor 1 and
2 are triggered indicated in red. Sensor 3 is still
not activated.
Bottom trawling
Trawl system with depth, bottom and catch sensor.
The depth is 52.3 meters, the bottom sensor
indicates no bottom contact and the footrope has
been off bottom for 7 minutes. The catch sensor
has been activated for 19 minutes.
Effective trawling with Simrad PI32...
Simrad PI32 gives a new dimension to trawling where
new sensor design, combined with new signal processing
technology can achieve more efficient trawling.
You can choose from the variety of sensors to build the
trawl system that will give you the information required.
The PI32 catch sensor will indicate when a pre-determined
tonnage of fish is caught in the cod end. The bottom contact
sensor for trawlers is extremely important to help keep the
trawl on the bottom, to avoid fish escaping under the rollers.
For a pelagic trawl, the new bottom sensor will sound an
alarm when the foot rope is too close to the bottom.
The Simrad PS30 Sensor is designed to withstand
the extreme forces and the rough environment around
the rollers on a bottom trawl.
Pelagic system with depth, bottom and catch sensor.
The depth is 28 meters, no bottom contact and
the catch sensor is not triggered. The headrope is
indicated on the echosounder recording and the
trawl height is entered manually.
