Power
Operating Depth
The VWJ400 is a high-performance underwater excavator specifically designed for deep-sea operations at depths of up to 1500 meters. Constructed using Q355D materials, the unit is equipped with corrosion-resistant coatings and zinc block protection, making it well-suited for the harsh marine environment. Powered by a high-pressure cable, the hydraulic system transmits power to the various actuators, and precise remote control is achieved via the main control cabin and deck control unit. The VWJ400 supports a variety of integrated tasks, including underwater crushing, excavation, gripping, and cutting.
Combining intelligent technology, robust construction, and mission-ready capabilities to meet the challenges of complex subsea operations.
Deep-Sea Environment Resistance
Operational depth of 1,500 msw, meeting deep-sea high-load requirements
Efficient Operations
900 m³/h high-capacity slurry processing, capable of excavating 600 kg of material per cycle
High Compatibility
Supports the passage of materials with a particle size of 150mm, suitable for various types of seabed sediments
Wide Coverage
Excavation distance up to 6,000 m, excavation depth 4 m, capable of reaching the seabed
Designed to perform a wide range of underwater tasks, delivering the versatility, precision, and reliability required for complex subsea operations.
Engineered for demanding subsea construction and intervention tasks, the VWJ400 delivers powerful excavation, crushing, and handling capabilities in deepwater environments.
The modular design and advanced control system enable the VWJ400 to perform a wide range of subsea construction and maintenance tasks.
Key technical specifications that define the system’s performance, operational capacity, and suitability for various underwater applications.
Power：280kW
Depth：1500m
Dimensions (L*W*H) ：8000×3000×3000mm
Weight：12t
Slurry Discharge Volume：900m³/h
Particle Size：150mm
Digging Weight：600kg
Excavation Distance：6000m
Digging Depth：4m
Unloading Height：3m
We deliver innovative underwater robotics and subsea engineering solutions that enable safer, smarter, and more efficient offshore operations. Combining independent R&D, advanced manufacturing, and extensive project experience, we support customers throughout the entire lifecycle of offshore and deep-sea projects.
Contact VVLAI’s experts to find the right underwater robotics and marine engineering solutions for your next project.
