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Forward-Looking Sonars (FLS) Series ​

Multi‑beam forward‑looking sonar / underwater acoustic camera for ROV, AUV, USV & diver‑held systems. Real‑time underwater imaging for obstacle avoidance, target search & subsea inspection in zero‑visibility turbid water.​

Our multi‑beam forward‑looking sonar portfolio covers compact low‑power portable units to ultra‑long‑range deep‑water models. Single‑frequency & dual‑frequency options available, fully self‑developed hardware & software with SDK for secondary integration. Units fit river, lake, harbor, coastal & deep‑ocean missions.

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UAC-Series Forward-Looking Sonars

UAC-7512FH  Portable Dual-Frequency  Forward-Looking Sonar 750kHz/1200kHz

UAC-7512FH 

Frequency: 750kHz/1200kHz
Max Detection Range: 120 m
FOV: 105°(H) × 26°(V)

UAC-400FH Long Range Detecting  Forward-Looking Sonar  400kHz

UAC-400FH

Frequency: 400kHz
Max Detection Range: 200 m
FOV: 135°(H) × 10°/20°(V)

UAC-900FH Small Low-power Portable Forward-Looking Sonar  900kHz

UAC-900FH

Frequency: 900kHz
Max Detection Range: 80 m
FOV: 60°(H) × 20°(V)

UAC-850F    Multi-beam Forward-Looking Sonar 850kHz(Imaging Sonar)

UAC-850F 

Frequency:   850kHz
Max Detection Range: 80 m
FOV: 90°(H) × 18°(V)

UAC-500F-Multi-beam-Forward-looking Sonar

UAC-500F

Frequency:  500kHz
Max Detection Range: 150 m
FOV: 90°(H) × 7°(V)

UAC-FLS200D

Dual-Frequency: 200 / 425 kHz
Max Detection Range: 500 m
FOV: 140°(H) × 20°(V)

UAC-FLS100 Multibeam Forward Looking Sonar

UAC-FLS100

Frequency: 100 kHz
Max Detection Range: 500 m
FOV: 105°(H) × 26°(V)

How to select your forward‑looking sonar​

  • Short‑range & high resolution(diver / small ROV):UAC‑900FH / UAC‑850F
  • Balanced performance portable dual‑frequency:UAC‑7512FH
  • Medium‑long range for AUV / USV:UAC‑500F / UAC‑400FH
  • Ultra‑long‑range detection:UAC‑FLS200D / UAC‑FLS100

Typical Applications


  • Obstacle Avoidance for ROV/AUV/UUV
  • Underwater Search & Rescue / Object Recovery
  • Pier, Dam & Subsea Infrastructure Inspection
  • Marine ranching & scientific marine observation

FAQ ​

Forward‑looking multibeam sonar generates real‑time acoustic images in turbid / zero‑visibility water, independent of optical light, for obstacle avoidance, target detection and inspection.

Dual‑frequency balances long‑range detection and high‑resolution close‑range identification. Single‑frequency models optimize for either maximum range or compact low‑power size.

All our forward‑looking sonars provide open SDK, Ethernet & RS485 sync interface for secondary integration.

Yes, some models support custom titanium housing for deeper‑depth missions. Contact us for custom specification.

Need help selecting the right forward‑looking sonar for your project?

Tell us your platform, operating depth, detection range requirement & working environment. Our underwater acoustic engineers will recommend suitable model for you.