Marport Catch sensors
Marport catch sensors tell you when your trawl starts to fill. Placed on the top of the trawl cod end, they monitor the amount of catch that you have and warn you when the trawl is full. You can even use them to determine a precise number of fish inside the trawl net.
This way, you can monitor the contents of the cod end as you are fishing, avoid problems of overfilling and increase fish survival rate inside the trawl net. It is recommended to install several sensors along the trawl to better follow the filling processes.
There are two types of catch sensors
Marport Catch sensor gives you the catch status of the trawl (empty or full), along with depth, water temperature and pitch and roll information. Catch sensors can emit on a single frequency of 40 kHz (Marport, Scanmar) or 70 kHz (Simrad, Wesmar), or on a dual frequency (40 kHz/70 kHz).
Catch Explorer gives you the catch status of the trawl, with depth, water temperature and pitch and roll information. In addition, it provides an echogram image of the volume of catch inside the cod end.
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