Vigilant is an advanced Forward Looking Sonar (FLS) developed to support crewed and uncrewed maritime platforms operating in confined, contested, and GNSS-denied environments. Designed for expeditionary missions and autonomous navigation, the system provides long-range underwater situational awareness by detecting seabed hazards and water column obstacles far beyond the capability of conventional navigation sonars. Using patented beamforming technology, Vigilant FLS delivers depth-finding performance at ranges exceeding 30 times the prevailing water depth, enabling vessels to identify underwater threats and navigational hazards before they become mission-critical risks.
Engineered for integration with Autonomous Surface Vessels (ASVs), Autonomous Underwater Vehicles (AUVs), and crewed maritime platforms, Vigilant FLS generates high-fidelity sonar imagery and real-time bathymetric data for obstacle avoidance, route planning, and reactive navigation. The system offers obstacle detection ranges of up to 1,500 m and high-resolution 2D and 3D seabed mapping at ranges up to 600 m, while supporting operational speeds of up to 25 knots. A 120° field of view, seamless switching between sonar and depth-mapping modes, and TCP/IP data output enable straightforward integration with autopilots, bridge systems, and command-and-control architectures. Designed for both retrofit and new-build installations, Vigilant FLS provides autonomous and crewed vessels with enhanced underwater awareness for safe operation in dynamic maritime environments.
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 |
