Catalogue Catch monitoring brochures
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Solid bottom contact sensors
The Bottom contact sensor monitors if the ground gear is on or off the bottom. Increase your efficiency; stay in touch with the bottom. Do not tow with heavy bottom gear; trim it till you have the perfect balance.
Bottom contact is indicated on screen and with an audio alarm. The net has been off the bottom for 7 minutes.
Bottom trawl
Bottom contact sensor on a bottom trawl gives you fast update and accurate information. Adjust the length of the sensing chain to see when the ground gear lifts a few cm off the bottom.
Bottom contact sensor on a purse seine gives an alarm when the sensing weight touches the bottom. This enables you to fish close to a rough bottom.
Bottom contact sensor on a pelagic trawl. Adjust the length of the sensing chain to avoid towing on the bottom and tearing the net.
Purse seine Pelagic trawl
Accurate purse seining
The Simrad PI Catch Monitoring system receives information from up to six sensors at the same time. The system uses a hull mounted- or over the side hydro­phone. The net's depth, water temperature and the important bottom contact information are displayed in large digits or easy to understand graphics. The Simrad PI system is designed with different codes to avoid
interference between vessels operating close together. The small size, quick update rate, long battery life and its long-range capability, allows the PI system to be installed on any size net, from a small sardine net to a large tuna net. The PI system inter­faces to the latest professional Simrad echosounders and sonars.
Data sharing
Surface temperature meter
Depth and temperature
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Display with an alarm function, set for increasing or decreasing tempe­rature. Temperature versus time can be shown graphically on the lower part of the display.
Purse seining with two depth sensors and one temperature sensor. The water temperature is indicated in the blue area. The ground line is passing through a thermo cline.
Integrated information from the PI system can be sent to other Simrad equipment. Here is information from 3 depth sensors displayed in relation to the fish school on a Simrad SP90 sonar.
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