Survey Equipment

EdgeTech: Towfish Depressors

Availability: Rental

Unique Group offers the EdgeTech towfish depressors which allows the towfish to be towed at greater depths and faster speed without increasing the length of the tow cable in the water.


It provides assistance to tow at greater depths, at a very rapid speed.

The depressor rings are available for the fitment above 4125 and 4200/5 towfish.

It exerts a downward force on the tow fish as it moves through the water, pushing it deeper.


The angle of the wing is user adjustable to 0°, 5° and 10° depending on the desired dive angle.

Optionally available trim tabs on the back of the wing can be adjusted for fine-tuning its performance.

A safety cable is attached to prevent loss of the wing should it become snagged.


Search and recovery.

Port security.

Hull Inspections.

Channel / clearance surveys.

Mine countermeasures (MCM).

Product Enquiry

Case Studies

Unique Group Provides Multi-beam Echo Sounder for Searching Underwater Rock Art in Australia  
Survey Equipment Australia
Read More
Marine Magnetometer aids in closure of missing woman case in South Dakota
Survey Equipment USA
Read More
Turnkey Survey Equipment package delivered to Sandock Austral Shipyards as part of the Renewal of the South African Navy Hydrographic Capability
Survey Equipment South Africa
Read More