Fixed to a trawl’s footrope, the Bottom Explorer provides a constant confirmation that the gear is in contact with the seabed, or an indication that the trawl has risen off the ground, giving the skipper the opportunity to respond by adjusting towing speed or warp length to place the gear back were it belongs. This minimises lost fishing opportunities and ensures that the trawl is actively on the ground.
Technical Specifications
- Uplink Frequency 30 to 60 kHz
- Uplink Beamwidth 70°
- Range to Vessel 2500 m
- Depth range 1600 m
- Pitch & Roll (Angle) ±90°
- Pitch & Roll (Accuracy) 0.1°
- Depth Resolution 0.1m with 0.1% accuracy
- Update Rate 1–5 sec.
- Sounder range (programmable)
- 5–160 m
- Sounder Broadband Frequency 360 to 400 kHz
- Temp Measurement Range: -5°C to +25°C
- Temp Accuracy: ±0.1°C
- Battery Type: Lithium-Ion
- Typical Battery Life: Up to 30 hours
- Charging Time Standard: 8 –12 hours
- Fast Charge: 4 hours
- Weight in Air 5.0 kg
- Weight In Water 0.9 kg
- Warranty 2 years (Sensor & Battery)
Marport brochure