Positioning of trawl doors by utilizing cheap AIS-transponder beacons attached to surface-piercing bouys which in turn are attached to the doors using Dynex high tensile rope.
The bouys inevitably goes wherever the doors go and their respective positions are continously broadcast to the Vessel.
Cheap and easy alternative to using costly (and often unreliable) hydroacoustic positioning via Simrad/Kongsbergs proprietary ITI/HiPAP technology or IXSEAs equally expensive and unreliable counterpart GAPS/POSIDONIA.
Негізгі бет Trawl door positioning using AIS-transponders/AtoN-bouys
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