The L25 Multi-function Marine Survey USV is designed with a wider deck and larger payload to support multiple instruments operating simultaneously for underwater inspection, hydrography survey, and oceanography survey. An internal combustion engine extends battery life to up to 72 hours, supporting round-the-clock inspection with real-time data and video feedback. The vessel incorporates a small A-frame and winch to support towing surveys with cable lengths of up to 200 meters, while a foldable lifter protects instrument wet ends and provides greater payload capacity.
The catamaran hull design delivers stable working conditions for survey operations, with a roll range of less than 10 degrees in Sea State 4, reduced swaying, and lower spray foam to maintain stable and quiet conditions for acoustic equipment. A low-noise electric plug-in thruster reduces signal-to-noise ratio by 20 percent.
High-precision autonomous control is supported by radar, HD camera, and AIS sensing for environmental perception, along with dual engines and dual propellers that provide high torque and enable in-situ rotation and close navigation around constructions for zoom-in inspection. Autonomous navigation, obstacle avoidance, and propulsion control algorithms are integrated, and an auto-return function allows the L25 to automatically sail back to a designated location if communication is lost or power is running low during a mission.
| Dimensions: | 7.5 m x 2.8 m |
| Range: | 10-20 km |
| Endurance: | 65 hours @ 4 knots |
| Payload: | 200 kg |
| Weight: | 2400 kg |
| Max Speed: | 10 knots |
