L42
Product descripton: L42 by OceanAlpha
The L42 Uncrewed Surface Vessel (USV) is a next-generation offshore survey platform engineered for hydrographic surveys, geophysical surveys, offshore wind farm inspections, and pipeline route mapping.
With 8-day endurance, over 1,500 km range, and multi-sensor integration, the L42 delivers high-resolution ocean data with lower risk, lower cost, and significantly reduced carbon footprint.
Technical specifications
Key Features
Redundant Hybrid Propulsion — Always on Mission
The L42 is a catamaran fitted with four independent electric outboard motors and two generators.
Steering is achieved through differential thrust, so the loss of any single motor does not result in a loss of maneuverability. The remaining motors provide sufficient turning moment to maintain safe control.
8 Days Endurance
With up to 8 days of nonstop operation, the L42 delivers true long-endurance autonomy.
- Less downtime
- More data
- Maximum offshore efficiency
Flexible Multi-Sensor Integration
The L42 features a modular mission architecture supporting:
- Dual moonpools
- Dual auto lifters
- SVP winch
- Towing winch
- Multiple mounting interfaces
This enables fast integration and maintenance of hydrographic and geophysical sensors, including:
- MBES
- SBP
- SSS
- USBL
- ADCP
- And more
Advanced Control: Purpose-Built for USV Operations
OceanAlpha’s in-house USV control system provides:
- Reliable autonomous navigation
- Real-time situational awareness
- Seamless mission planning
Designed specifically for USVs, it ensures:
- Continuous updates
- Expanded functionality
- Long-term operational stability
| Category | Specification | Value |
|---|---|---|
| Physical | Dimensions | 8.4 m (L) × 2.8 m (W) × 2.8 m (H) |
| Dry Weight | 3 t | |
| Draught | 0.4 m | |
| Hull Type | Aluminium catamaran | |
| Fuel Tank Capacity | 400 L × 2 (diesel) | |
| Performance | Payload | 500 kg |
| Maximum Speed | 6 kn | |
| Survey Speed | 4–5 kn | |
| Endurance | 8 days / 1,500 km @ 4 kn | |
| Operation Sea State | Sea State III | |
| Power & Propulsion | Diesel Generators | 2 × PAGURO 18VK, 18 kW/set, water cooling |
| Electric Propellers | 4 × NAVY 6.0 Evo-L, 6 kW/set | |
| Power Batteries | Li-ion iron phosphate battery, 51.2 V / 280 Ah | |
| Integration Support | Auto Lifters | 2 × 850 mm, hydraulic drive, IP65 protection |
| Towing System | Dynamic load ≤50 kg, static load ≤75 kg | |
| Power Supply Interface | 12V/24V DC (300 W total), 220 VAC (1,700 W total) | |
| Control & Communication | Starlink Communication Terminal | 220 Mbps downlink / 25 Mbps uplink, IP56 protection |
| Broadband Private Network Radio | 1.4 GHz, coverage distance 10–15 km | |
| Iridium Digital Transmission Terminal | Supports short data transmission and positioning |