OceanAlpha Equipment
L42 USV
Long-endurance catamaran USV for offshore hydrographic and geophysical surveys, with up to 8 days endurance and redundant hybrid propulsion.
Description
The L42 is a catamaran uncrewed surface vessel for hydrographic and geophysical surveys, offshore wind farm inspections and pipeline route mapping. It runs on OceanAlpha’s in-house USV control system, and the site states over 1,500 km range and 8-day endurance.
Key features
- Four independent electric outboard motors and two diesel generators; steering by differential thrust, so losing one motor does not cost manoeuvrability
- Modular mission architecture with dual moonpools, dual auto lifters, an SVP winch and a towing winch
- Multiple mounting interfaces for MBES, SBP, SSS, USBL and ADCP sensors
- 500 kg payload; operates in Sea State 3, survives Sea State 4
- The L42B variant has received Bureau Veritas Approval in Principle
Applications
Offshore hydrographic and geophysical surveys, offshore wind farm inspections and pipeline route mapping.
Specifications
| Beam | 2.8 m |
|---|---|
| Displacement | 3.5 t |
| Max. speed | 6 kn |
| Endurance | 8 days @ 4 kn |
| Payload capacity | 500 kg |
| Propulsion | 4 x electric outboard motors, 2 x diesel generator |
| Deck machinery | 2 x auto lifter, towing system, SVP winch |
| Operation sea state | Sea State 3 |
| Survival sea state | Sea State 4 |
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