Vietnamese 
Used on bottom and pelagic twin trawls the Twin Spread and Remote sensors provide crucial information about your trawl behaviour. The three sensors working together tell you the exact distance between the two trawl doors.
Sidebar
Simrad PI Temperature
Fishing in too warm or too cold water may be just a waste of time and money.
Simrad PI Spread/Depth
Dual wireless sensor for spread and depth measurements
The PI Spread/Depth dual sensor measure the physical distance between the trawl doors as well as the depth of the trawl door.
Simrad PI Spread
Check the distance between trawl doors!
Simrad PI SeineSounder
Dual wireless sensor for depth and height measurements
From its position on the gear, the Simrad PI SeineSounder dual sensor measures both the depth below the surface and the height above the bottom.
