UK Unveils Advanced Underwater Drone to Protect Cables and Pipelines from Sabotage

In a bold step to counter growing threats to underwater infrastructure, the United Kingdom has tested a new underwater robot designed to safeguard undersea cables and pipelines from sabotage. On June 6, 2025, the Defence Science and Technology Laboratory (Dstl), working alongside British companies, introduced a remotely operated underwater vehicle (ROV) that offers a modern and repeatable solution for one of NATO’s most vulnerable domains—the seabed.

This development comes in the wake of several suspected sabotage incidents, especially in the Baltic Sea, where concerns have grown over Russian and Chinese activities around key underwater assets. With over 50 Russian ships suspected of loitering near vital subsea installations, the UK’s new robotic system is aimed at filling a crucial gap in defence: how to monitor and protect these difficult-to-access locations without relying heavily on human divers.

The underwater robot is the result of close cooperation between Dstl and industry partners including Alford Technologies, Atlantas Marine, Sonardyne, and ECS Special Projects. Rather than starting from scratch, the team combined advanced Dstl subsystems with a proven commercial ROV platform. The result is a powerful system that can detect, inspect, and even neutralize explosive threats on the seafloor.

Key features include high-resolution sonar, live camera feeds, precision tools for explosive placement, and a robust suite of sensors. It can dive far deeper than human divers, stay submerged for long durations, and be easily launched from either ships or shore facilities. Its design supports both military missions and civil protection, such as safeguarding undersea energy grids and international communication lines.

The robot has already gone through rigorous testing in varied conditions—ranging from the Royal Navy bases in Portsmouth and Portland to the challenging waters off South Wales and Norway. Importantly, this new system is not just a standalone device; it’s built to work within a broader network of autonomous robots. This allows for seamless coordination in mapping the seabed, identifying threats, and neutralizing them—without exposing human lives to danger.

Compared to similar platforms used by other nations, such as Norway’s HUGIN or the U.S. Navy’s Kingfish system, the British ROV stands out for its flexibility. It combines both detection and disposal in one small and cost-effective unit, reducing the need for multiple tools or complex support systems. Unlike fully autonomous vehicles that depend heavily on satellite communications, this hybrid system offers both autonomous capabilities and manual control—ideal for complex or contested waters.

Strategically, this technology could change the way NATO defends its underwater territory. In regions like the North Atlantic and Arctic waters, where tensions have been rising, the ability to continuously monitor critical infrastructure without relying on limited human teams is a major breakthrough. Other countries facing similar risks, such as Taiwan, could also benefit from this approach as concerns grow over possible Chinese sabotage in the Pacific.

This new ROV represents more than just technical innovation—it marks a shift in how nations prepare for modern, low-visibility conflicts known as “grey-zone” warfare. As threats increasingly target infrastructure instead of front-line forces, having persistent, responsive, and intelligent tools on the seabed becomes essential.

In conclusion, the UK’s latest underwater drone is a smart, forward-thinking response to evolving threats beneath the ocean’s surface. With its combination of robotics, explosive expertise, and seabed awareness, it adds a critical layer of protection in an era where control of the underwater domain is as vital as land or air.