Marport Device / Instrument
Speed Sensors (Speed Navigator Pro, Speed Explorer Pro, Trawl Speed Sensor Pro, Grid Sensor Pro)
Sensors measuring along and across water speed at the trawl, some with integrated echograms, plus trawl symmetry and grid flow.
Description
Marport's speed sensors measure water flow through and around the trawl.
Key features
- Speed Navigator Pro: high-refresh echograms (5 to 160 m) plus along and across speed, temperature, depth, pitch and roll
- Speed Explorer Pro: 120-210 kHz broadband sounder; along speed up to ± 10 knots, across speed up to ± 3 knots, 0.1 knot resolution
- Trawl Speed Sensor Pro: trawl symmetry, pitch and roll
- Grid Sensor Pro: along and across speed at the grid
- All Marport Pro sensors use a 30 to 60 kHz uplink with a range to vessel of up to 2,500 m, Lithium-Ion batteries and a 2-year warranty covering sensor and battery.
Applications
Optimising towing speed and trawl geometry, which affects catch and fuel use.
Specifications
| Along speed (Speed Explorer) | up to ±10 kn |
|---|---|
| Across speed (Speed Explorer) | up to ±3 kn |
| Resolution | 0.1 kn |
| Uplink | 30-60 kHz |
| Range to vessel | up to 2,500 m |
| Battery | Lithium-Ion |
| Warranty | 2 years (sensor and battery) |
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- Marport Trawl Navigator Pro / Pro NX
- Marport Door Sounder Pro / Pro NX
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