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Hydro-Tech SS4090 Dual Frequency Side Scan Sonar Tow fish, 400/900kHz

Hydro-Tech SS4090 Dual Frequency Side Scan Sonar Tow fish, 400/900kHz

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  • Free UK Delivery (Orders Over £100)
  • Price Gurantee (Beat Any Price)
  • UK Based (Approved Dealer)

Dual Frequency Side Scan Sonar

SS3060 and SS4090 (Seagull) is a dual-band broadband high-definition side-scan sonar designed for general survey requirement. The system adopts a number of innovative technologies including broadband signal processing, variable aperture, image equalization, 4K HD display technology to fulfill customer requirements on wide scanning range and high definition. The system is widely applied in shallow water operations such as underwater engineering inspection, pipeline investigation, fire emergency search and rescue, underwater archaeological survey, marine pasture investigation and environmental protection hidden pipe inspection etc.


  • High Resolution: With 60kHz bandwidth signal, SS3060 and SS4090 adopt pulse compression or ultra short pulse transmission to improve the ranging resolution in the across track direction from the system level and enhance scanning image resolution too.
  • Clear Image Near or Far: It adopts variable aperture dynamic focusing technology to increase scanning image’s depth of field and effectively resolve near field blur problem of general side scan sonars, SS3060 and SS4090 can get clear and consistent image from both far and close range.
  • Delicate Image: Innovative image equalization technology combines software of real-time contract adjusting and hardware of 24bits high dynamic AD to enhance the image contrast and definition. This is the reason that SS3060 and SS4090 can present the terrain background image so delicately.
  • Diversified Applications: Cable and pipeline survey, hydrological survey, archaeological survey, ocean energy and mining resources detection, environmental protection investigation and port safety, etc.


Technical Specifications
Working Frequency 300kHz / 600kHz (SS3060)
400kHz / 900kHz (SS4090)
Across Track Resolution 2.5cm@300kHz / 1.25cm@600kHz
1.25cm @400kHz / 1cm @900kHz
Along Track Resolution 300kHz: 0.24m@50m;0.49m@ 100m; 0.73m@150m
600kHz: 0.09m@20m; 0.23m@50m; 0.34m@75m
400kHz: 0.18m@50m; 0.27m@ 75m; 0.37m@100m
900kHz: 0.07m@20m; 0.17m@50m; 0.26m@75m
Signal Bandwidth 60kHz
Vertical Beam Width 50°
Parallel Beam Width 0.28°@300kHz / 0.26°@600kHz
0.21°@400kHz / 0.2°@900kHz
Signal Type CW/Chirp
Max. Slope Range 230m@300kHz / 120m@600kHz
150m@400kHz / 75m@900kHz
Max. Working Depth 300m

Physical Specifications
Towfish Size Φ100mm x 1200mm
Towfish Weight 25kg (In the air) / 12kg (In water)
Working Temperature -2° ~ 40℃
Storage Temperature -20℃ ~ 55℃
Power Supply DC 20V - 36V / AC 110V - 240V
Power Consumption 60W
Deck Cable Length 50m (Optional for 200m)

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Free UK Delivery Over £100

Free UK Delivery


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