L25
Product descripton: L25 by OceanAlpha
The L25 unmanned surface vessel (USV) is OceanAlpha’s flagship product with extensive field-proven experiences.
It’s designed for hydrographic and geophysical surveys, offering comprehensive data collection for pre- and post-installation, site investigation, pipeline inspection, and seabed characterization, which are essential for offshore construction and maintenance.
Technical specifications
Key Features
Balanced Performance: High-Speed Agility & Extended Range
The L25 integrates 2 independent diesel outboard engines and a 3.5KW diesel generator, delivering 10kn high-speed capability with superior operational performance even in Sea State 3.
Its endurance is expandable to 130h @ 4kn with two additional 50L fuel tanks, ensures uninterrupted long-range operations.
Practical Combo: Deck Gear for Most Missions
The L25 integrates:
- A towing system for towfish deployment
- A mid-hull auto-lifter
A streamlined combo that meets operational needs for most users.
The tow system enables autonomous towfish deployment, while the auto-lifter safeguards instrument wet ends and expands payload capacity.
Outstanding Payload Capacity
With multiple mounting positions and deck gears, the L25 unmanned vessel can carry 2–4 wet-end payloads simultaneously.
Integrated Multi-Network Communication
The communication system can integrate four networks, which supports both daily and emergency communications.
Satellite communication is optional for safer long-distance operations.
Autonomous Control with High Precision
Radar, HD camera and AIS sensing enabling highly sensitive environmental perception.
Applied technologies include:
- Autonomous navigation algorithm
- Advanced obstacle avoidance algorithm
- Propulsion control algorithm
These systems are applied to minimize the risk of collision.
| Category | Specification | Value |
|---|---|---|
| Physical | Dimensions | 7.5 m (L) × 2.8 m (W) |
| Weight | 2.4 t | |
| Draught | 0.4 m | |
| Hull Material | Marine Aluminum Alloy | |
| Deck Machinery | Auto Lifter, Towing System | |
| Performance | Maximum Speed | 10 kn |
| Survey Speed | 4–5 kn | |
| Endurance | 65 h @ 4 kn | |
| Operation Sea State | Sea State III | |
| Payload | 200 kg | |
| Power & Propulsion | Propulsion | 2 × Outboard Diesel Engines |
| Power for Electronics | Battery Pack + Diesel Generator | |
| Fuel Capacity | Diesel 150 L × 2 | |
| Navigation Aids & Safety | Situation Awareness | Navigation Radar, AIS, Camera |
| Collision Avoidance | Dynamic / Static Collision Avoidance | |
| Control & Communication | Control Mode | Remote Control / Autonomous |
| Communication | Private Network (10–20 km), Remote Controller (1 km), Public Network, Optional: SATCOM | |
| Software | OceanAlpha USV Navigation & Mission Software |