Intelligent Towed SAS System

KATFISH™ acquires over 3 billion pixels per 3km2 per hour of area coverage rate. That’s 30 times more detail than conventional side scan sonar. Advanced algorithms perform thousands of adjustments per second to ensure every pixel displays data with incredible clarity.

KATFISH™ is engineered using our innovative and proven Synthetic Aperture Sonar technology – now deployed in over 10 countries by leading military and commercial operators.


KATFISH™ provides the industry’s highest resolution seabed pixels at the lowest cost.

Product Specifications

Dual sided max swath 200m at 8 kts (440m at 4 kts)
Single sided max plan range 100m at 8 kts (220m at 4 kts)
Dual sided area coverage rate 3.3 km squared per hour (with gap fill)
Survey altitude 13m (min 5m, max 30m)
Along track SAS image resolution 3.3cm
Across track SAS image resolution 3cm
SAS image grating lobe level -40dB
SAS bathymetry along track resolution 25cm (configurable up to 6cm)
SAS bathymetry across track resolution 25cm (configurable up to 6cm)
SAS bathymetry vertical accuracy 10cm
Pulse length 5ms (configurable 1ms -> 10ms)
Pulse bandwidth 40kHz
Pulse type Linear FM  (CHIRP)
Pulse centre frequency 337kHz
SAS robustness against yaw ±10° over 50m track length
SAS robustness against sway ±0.2 m/s
Max crab angle 20°

Area Coverage Rate (ACR) Table showing the speed vs range capability of the KATFISH and MINSAS 180 Sonar

The KATFISH™ system is comprised of an actively controlled smart towfish, SAS imaging, bathymetry and gap-filler sonars, launch and recovery system, operator console, and visualization software. The towfish may be deployed from either Manned or Unmanned Surface Vessels (USV). The entire system is designed to be quickly installed and removed from vessels of opportunity.

A 180 cm AquaPix MINSAS sensor array is the heart of KATFISH™, which provides remarkably sharp 3 cm x 3 cm constant resolution across ranges of 220 meters per side. With tow speeds up to 8 kts and an integral SAS Gap Filler, KATFISH™ provides unprecedented high resolution Area Coverage Rates (ACR) of 3.9 km2 / Hr.