Target Detection

  • A 175 kHz down sounder provides excellent detection and resolution

  • With an update rate of 1 second, it permits real time monitoring, boasting the fastest update rate on the market

  • Due to proximity to fish, this sensor detects targets not seen on shipboard echosounders

Ease of Use

  • An EXTERNAL, removable battery ensures the user always has a full charge by keeping a spare battery on charge all the time

  • The user can change the battery while the sensor is still on the trawl

Ship Based Controls allow the user to:

  • Adjust gain during active trawling

  • Adjust db level in real time

  • Select dynamic TVGs of 5, 10, 20 log

How Does it Work?

A dynamic graphic of the target is presented, that provides images of:

  • Footgear Clearance

  • Fish Entering the Trawl

  • Bottom Profile

  • Trawl Opening

— 640 Lines of Resolution —
versus Industry-standard of 100 Lines

The Mantis is the most advanced net sounder on the market.
It gives unprecedented target detection, ease of use and real time gain control.
It transmits sounder data from the trawl to the vessel wirelessly.

System Components

A system consists of shipboard equipment including a focus hydrophone and the Mantis Receiver that communicate wirelessly to the Mantis sensor located directly on the trawl. A dynamic graphic of your target is presented that provides images to display the fish entering the trawl.



  • Capabilities: FM Digital Reception

  • Frequency: 33 kHz

  • Serial output to PC

  • Power: 120 or 240 Vac

Pictured: Mantis Receiver

Pictured: Mantis Receiver


  • Power: 120 or 240 Vac

  • Charge Time: 90 minutes

Pictured: Mantis Charger

Pictured: Mantis Charger

Focused Hydrophone

  • Beam Pattern: 70° Vertical, 60° Horizontal

  • Output: 100 W

  • Range: 2500 meters

Pictured: Focused Hydrophone


General Specifications

  • Maximum Depth: 1000 m

  • Telemetry Range: 2000 m

  • Sounder Weight: 16 kg

  • Sounder Range: Up to 100m

Mantis Specifications

Technical Specifications

Spec Data
Maximum Depth 1,000 m
Uplink Fequency 33 kHz
Telemetry Range 2,000 m
Battery 50 watts hrs/14 v
Battery Life 10 hours @ 1 sec
Uplink Beam/Down Sounder Beam 50°/40°
Sounder Weight 16 kg
Sounder Range Up to 100m
Sounder Frequency 175 kHz
Removable Battery Yes