Vigilant is a Forward Looking Sonar (FLS) system developed for crewed and uncrewed surface and subsurface platforms operating in contested, confined, and GNSS-denied maritime environments. Designed to improve underwater situational awareness and navigational safety, the system delivers long-range obstacle detection and high-resolution 3D bathymetric mapping ahead of the vessel. Using patented depth-finding technology capable of mapping seabed features at distances exceeding 30 times the prevailing water depth, Vigilant FLS enables safer navigation and mission execution in poorly charted or dynamic underwater environments.
The system utilises electronically generated azimuth beam arrays to image both the seabed and water column while providing real-time data to onboard operators, autopilots, and command-and-control systems. Vigilant FLS supports autonomous navigation and reactive manoeuvring through API integration while allowing seamless switching between sonar and 2D/3D depth mapping modes. Designed for integration with modern autonomous and crewed maritime platforms, the sonar supports expeditionary operations, obstacle avoidance, and underwater route planning with high-resolution imaging and extended detection ranges.
Specifications:
| Vigilant FLS 600 | Vigilant FLS 1500 | |
| Range (Depth mode / Sonar mode): | 600 m / 1,000 m | 600 m / 1,500 m |
| Field of view: | 120° | 120° |
| Operational speed: | Up to 25 knots | Up to 25 knots |
| Bottom mapping ratio: | Up to 30x water depth to 600 m ahead | Up to 30x water depth to 600 m ahead |
| Maximum depth detection: | 100 m (from sensor) | 100 m (from sensor) |
| Angular accuracy: | 0.3° | 0.25° |
| Depth rating: | 90 m or 600 m options | 90 m |
| Dimensions: | 300 mm x 270 mm diameter | Receiver: 110 mm x 310 mm x 400.5 mm Transmitter: 577.5 mm x 118 mm x 115.6 mm |
| Weight: | 90 m depth rated – 15.0 kg WIA 600 m depth rated – 20.0 kg WIA | Receiver: 4.0 kg WIA Transmitter: 6.0 kg WIA |
| Power consumption: | 50 W operational / <150 W peak | 50 W operational / <150 W peak |
