
Widershine · Water Rescue & Operations · Survey and Inspection USV
A Compact Platform for Integrated Water Surveys.
The Unmanned Surface Vessel (USV) combines a carbon-fiber and Kevlar composite hull with a spacious interior and a single moon-pool-style hatch for survey instrument integration. Its 80 kg maximum payload supports compatible sonar, laser, flow and water-quality equipment for work in ports, reservoirs, rivers and lakes. Stable autonomous survey lines, integrated positioning and attitude measurement, and remote measurement monitoring support field operations. Standard power comes from two 50 Ah rechargeable lithium batteries, with specified endurance of 6 hours at 2 m/s and a maximum speed of 6 m/s.
Key features
Composite Hull Construction
Carbon fiber and Kevlar composites are molded under high temperature and pressure. Fluid-dynamics simulation informs the vessel design, with a spacious interior and layered bulkheads.
Compatible Survey Payloads
The modular platform supports integration of single-beam and multibeam sonar, laser, ADCP, water-quality sensors and automatic profile winches. These are compatible payload options, not standard inclusions.
Stable Autonomous Survey Lines
Autonomous navigation supports stable survey-line operation for underwater terrain and waterway measurement. Survey teams can use the platform for reservoir, dam, wharf and hydraulic-structure work.
Positioning and Remote Monitoring
An integrated high-precision positioning and attitude measurement system supports survey operations. Remote monitoring of multibeam measurements provides real-time visibility when a compatible multibeam system is installed.
Onboard Observation and Avoidance
360° omnidirectional video provides onboard observation during operation, while obstacle-avoidance support helps with route awareness. Operators should assess the survey area and monitor changing surface conditions.
Battery Power for Survey Work
Two 50 Ah rechargeable lithium batteries are standard. Endurance is specified as 6 hours at 2 m/s; installed equipment and operating conditions affect endurance and range.
A Composite Hull with Space for Instruments
The carbon-fiber and Kevlar composite structure combines a compact 1500 × 775 × 425 mm footprint with a spacious interior. High-temperature, high-pressure molding forms the hull, while fluid-dynamics simulation informs its design. The internal moon-pool-style structure uses a single hatch for the survey platform.
The hull weighs 7.5 kg, separate from the complete equipped vessel, and maximum payload is 80 kg. Modular integration supports instrument selection for the task. The platform supports a two-person operator workflow.
- Carbon-fiber and Kevlar composite hull with layered bulkheads
- Single moon-pool-style hatch and spacious interior
- 80 kg maximum payload for compatible survey equipment

From Survey Lines to Underwater Terrain
Stable autonomous survey lines and remote measurement monitoring support underwater topography, reservoir-capacity and waterway surveys. A compatible multibeam echo sounder can be integrated for terrain scanning, while the positioning and attitude measurement system supports the survey workflow.
Compatible laser and sonar payloads can support scanning above and below the water. Multibeam frequency adjustment depends on the installed echo-sounding system. Select instruments for the required measurements; instrument choice and operating conditions affect payload, endurance and range.
- Underwater topography and reservoir-capacity measurement
- Hydraulic structures, dams, wharves and waterway surveys
- Above- and below-water scanning with compatible laser and sonar payloads

Survey payload integration
Compatible survey payloads
Bathymetric Survey Instruments
- Single-beam echo-sounder integration
- Multibeam echo-sounder integration
- Underwater terrain, reservoir-capacity and waterway measurement
- Instrument selection and integration are separate from standard vessel equipment
Compatible scanning payloads
Laser Mapping Instruments
- Compatible laser instrument integration
- Above-water scanning for survey and structure measurement
- Combined above- and below-water scanning with compatible laser and sonar payloads
Compatible monitoring payloads
Flow and Water-Quality Instruments
- Acoustic Doppler current profiler (ADCP) integration
- Compatible water-quality sensor integration
- Automatic profile-winch integration
- Installed equipment affects available payload, endurance and range
Discuss your working environment and deployment requirements with our team to select compatible instruments and plan the survey-system arrangement.
Application scenarios
Reservoir and Inland-Water Surveys
Measure underwater topography and reservoir capacity in reservoirs, rivers and lakes using compatible survey instruments, with stable autonomous lines and remote measurement monitoring.
Hydraulic-Structure Inspection
Support scanning and measurement around hydropower stations, dams, wharves and underwater structures. Select compatible sonar and laser instruments to suit the inspection task.
Port and Waterway Measurement
Use compatible sonar payloads for underwater terrain and waterway surveys in ports and navigable waters, with onboard video observation and obstacle-avoidance support during operations.
Technical specifications
Expand each section to view detailed hull, payload, power and survey-system specifications.
Hull and Payload
| Parameter | Specification |
|---|---|
| Hull material | Carbon fiber and Kevlar composites |
| Hull form | M-hull trimaran |
| Overall dimensions | 1500 × 775 × 425 mm (L × W × H) |
| Hull weight | 7.5 kg |
| Maximum payload | 80 kg |
| Hatch structure | Internal moon-pool-style structure with a single hatch |
| Hull protection | Layered bulkhead design |
Power and Travel
| Parameter | Specification |
|---|---|
| Standard battery equipment | 2 × 50 Ah rechargeable lithium batteries |
| Endurance | 6 h at 2 m/s |
| Maximum speed | 6 m/s |
Navigation and Observation
| Parameter | Specification |
|---|---|
| Survey navigation | Stable autonomous survey lines |
| Positioning and attitude | Integrated high-precision positioning and attitude measurement system |
| Measurement monitoring | Real-time remote monitoring with compatible multibeam equipment |
| Video observation | 360° omnidirectional video |
| Obstacle avoidance | Obstacle-avoidance support |
Compatible Instrument Integration
| Parameter | Specification |
|---|---|
| Sonar payload options | Single-beam and multibeam echo sounders |
| Scanning payload option | Laser instrument |
| Flow-measurement payload option | Acoustic Doppler current profiler (ADCP) |
| Environmental payload options | Water-quality sensors and automatic profile winches |
| Above- and below-water scanning | With compatible laser and sonar payloads |
| Multibeam frequency adjustment | Dependent on the installed multibeam system |
Wind and Wave Resistance
| Parameter | Specification |
|---|---|
| Wind resistance | Level 5 |
| Wave resistance | Level 3 |
Discuss your application with Widershine
Tell us about your operating environment, deployment distance and survey area and intended measurement tasks. Our team can help you review this survey USV for your project requirements.
Email: business@widershine.com · WhatsApp: +86-186-2800-0208
Assess water conditions, survey routes and launch and recovery access before operation. Select compatible instruments and plan around their effects on payload, endurance and range.
