Full control of the school – from detection to catch...

Trawl sight

When connected to the Simrad ITI Trawl system, the trawl sight will indicate the trawl position relative to the school of fish and can be used to target the horizontal and vertical position of the trawl.

Trawl data

Data about the trawl’s width, height anddistance from the vessel can be entered into the sonar via the menu.

Trawl position

When the Simrad ITI trawl system is connected to the sonar, the trawl symbol will automatically be shown in the correct size and position on the sonardisplay.

Catch data

All vital school data is available; depth,distance and bearing from vessel, school’s speed, course, area and volume in tons is calculated. In addition the school’s geographical position in latitude and longitude can be displayed when aGPS is connected. The catch indicatorsstatus, from a Simrad ITI or FS20/25, are also shown on this page. Ahigh performance low frequency echosounder is part of the sonar when installing the 90°tilt option. The actual vertical position of the trawlsymbol, from a Simrad trawl system, is a real advantage when pelagic trawling. In the sonar Omni/Echosounder/forward 90°Mode, you have a complete omni directional picture with a forward-looking 90°fan sweeping automaticallyfrom side to side. The vertical front view gives an earlier and considerably wider detection area than a standard echosounder, enabling targets outside of the vessel track to be detected.

Trawling The combination of the horizontal and the vertical presentations, gives valuable information for safe andcorrect positioning of the trawl. The aft view can be locked onto the trawl symbol and will automaticallytrack the net. In addition to monitoring the trawl catching behind thevessel, it is possible to search for and evaluate additionalschools by using the forward looking 90°vertical view.The forward looking 90°view can be trained from sideto side while the aft view is locked on the trawl. "I would never skipper a trawler without the 90°vertical view!"

This is a common statement from the hundreds of skippers using Simrad sonars. For trawlers this feature gives the greatest benefit during a tow.Together with the Simrad ITI Trawl system, the trawl position relative to the vessel is shown inreal time on the screen.