Marport Catch Sensor - Introduction and Presentation

Catch Sensors | V1 | Introduction and Presentation
Introduction and Presentation
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Introduction
Marport's catch sensors tell you when your trawl starts to fill. Placed on the top of the
trawl codend, 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 amount of fish inside the
trawl net. This way, you can monitor the contents of the codend 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:
• 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 codend.
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