Wireless Charging Revolutionizes Subsea Drone Operations

In the bustling halls of the Offshore Technology Conference 2025, Unplugged, a trailblazing engineering firm specializing in industrial inductive modules, dropped a bombshell. Their paper, “Enabling Resident AUV and ROV Subsea Operations: The Role of Wireless Inductive Charging and Docking Stations,” didn’t just present a new technology; it laid out a roadmap for the future of subsea operations. And let me tell you, it’s a game-changer.

Imagine this: an underwater drone, humming along the seabed, collecting data, inspecting infrastructure, and then, when its batteries start to drain, it doesn’t have to surface or rely on a human-operated vessel. No, it simply docks at a Subsea Docking Station (SDS), recharges wirelessly, and off it goes again. This isn’t science fiction; it’s reality, and it’s happening right now.

In 2023, at Equinor’s Njord Field in the North Sea, an SDS facilitated a world-record 165-day continuous operation of an underwater drone. The drone docked and undocked 280 times, recharging its batteries and transferring mission data each time. This wasn’t a one-off stunt; it was a fully operational resident system, proving that inductive technology can enable continuous autonomous subsea operations.

But here’s where it gets really interesting. The success of this SDS isn’t just about the technology itself. It’s about the approach. Unplugged has championed open innovation and collaborative standardization, aiming to create a fully interoperable subsea ecosystem. Think of it like a land-based gas station—any vehicle, regardless of brand, can pull up and refuel. The SDS achieves this interoperability and compatibility across multiple drone types and manufacturers by integrating advanced yet standardized inductive charging technology.

This isn’t just about power; it’s about data too. Wireless inductive charging allows for the simultaneous transfer of both, making the SDS a hub for data collection and analysis. And it’s not just about big, work-class Remotely Operated Vehicles (ROVs) used in the oil and gas industry. The technology is being adapted to support microdrones, or Autonomous Underwater Vehicles (AUVs), in emerging markets like aquaculture.

So, what does this mean for the future? Well, it’s clear that inductive charging technology is set to revolutionize subsea operations. But it’s not just about the technology; it’s about the approach. Open innovation and collaborative standardization could be the key to unlocking a fully interoperable subsea ecosystem. And that, my friends, is a future worth diving into.

The maritime industry is notoriously slow to change, but this breakthrough could be the catalyst it needs. It’s not just about efficiency and cost savings; it’s about safety too. The more we can automate and remove humans from hazardous environments, the better. And let’s not forget the environmental benefits. Less surface traffic means less emissions, and more continuous monitoring means we can better protect our oceans.

But it’s not all smooth sailing. There are challenges ahead. Standardization is a complex process, and getting everyone on board won’t be easy. But if Unplugged’s approach proves successful, it could set a precedent for the entire industry. And that, folks, is something to keep an eye on. So, buckle up. The future of subsea operations is looking wireless, and it’s looking bright.

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