Enhancing Installations & Inspections
Efficiency with Dual ROV Solution

Dual-ROV Collaboration: An Innovative Solution to Offshore Wind Installation and Inspection Challenges

By creatively deploying a pair of FIFISH Offshore-Grade Underwater Robots and an additional industrial-grade ROV in a dual-robot synergy, project teams have significantly reduced offshore downtime and increased operational efficiency during both the construction and maintenance phases of an offshore wind farm.

Project Location: South China Sea, Asia
Implementation Time: November 2022

Increasing Demands of Offshore Wind Construction and Operations

As offshore wind becomes a key part of the renewable energy mix, the need for seamless, full-lifecycle operations and maintenance (O&M) solutions grows ever more urgent—particularly for tasks like subsea cable installation, bend restrictor servicing, and detecting buried objects on the seabed. Traditional diver-based operations carry high safety risks and often lack the precision demanded by modern offshore standards. Large conventional ROVs also pose challenges in nearshore wind farms due to their bulk and complex logistics requirements.

Pioneering Dual-ROV Synergy for Seamless Offshore Operations

Offshore wind construction tasks frequently require meticulous coordination—such as guiding towlines through turbine foundation piles or installing bend restrictors. Conventional heavy ROVs struggle to navigate narrow spaces, and diver interventions in these confined areas are extremely risky.

By employing a dual-robot collaboration, FIFISH and the client overcame these hurdles. The powerful FIFISH Offshore-Grade Underwater Robot, featuring robust motors and adaptive current-resistant hovering, easily handled tasks requiring higher load capacity—such as guiding cables through foundation conduits and installing bend restrictors. Simultaneously, the industrial-grade underwater robot replaced divers for inspections inside monopile cavities and other tight compartments, performing detailed tasks like cavity imaging and cable retrieval to support the installation process.

Working in tandem, these two underwater robots minimized downtime, boosted efficiency, and greatly reduced the need for manual intervention while offering real-time visibility throughout the operation. With high-resolution video feeds and advanced sonar capabilities, operators could precisely adjust positioning and minimize risks. Feedback from on-site teams highlighted the FIFISH robot’s streamlined collaboration, robust current resistance, and exceptional maneuverability.

Accelerating Intelligence in Offshore Wind Construction and Maintenance

By adopting dual-ROV operations with FIFISH Underwater Robots, the offshore wind sector has paved the way for safer, more efficient, and increasingly intelligent subsea installation and inspection processes. FIFISH delivers full-process solutions from construction and installation to in-service inspections, overcoming challenges like narrow spaces, strong currents, and multi-axis coordination. This approach simplifies procedures, cuts costs, raises efficiency, and mitigates risks—fostering high-quality growth in the industry.

This pioneering success marks the transition toward “unmanned, digitalized, and intelligent” operations in offshore wind O&M, supporting the ongoing drive to reduce both overall costs and safety hazards. By integrating data-driven methods through advanced robotic systems, the sector is set to reach new milestones in sustainable energy development.