Introduction

Marport's Speed Navigator is a high-definition net sounder, designed to operate on the trawl headline and tunnel.

It measures the speed of the water flow in two axis: the flow along the direction of the trawl and across it. This way, you can monitor if the trawl is moving at the right speed and with the right geometry. It measures along speed up to 6 knots and cross currents speed up to 3 knots. It also tracks pitch, roll, depth and temperature data.

The high-definition echogram images allow you to see fish passing through the trawl and have an overview of the trawl opening.

In order to efficiently follow the trawl descent, echogram ranges are configurable from 5 to 160 meters. Moreover, the sensor includes an automatic range mode: the sensor can automatically switch to lower ranges of 20, 10 and 5 meters to get sharper pictures, proving to be particularly useful when fishing close to the bottom.

Optionally, the sensor can also measure temperature, depth, pitch and roll.