Autonomous Underwater Surveillance Drones

Helsing and other European defense firms are developing autonomous underwater drone fleets to monitor critical subsea infrastructure — fiber optic cables, gas pipelines, offshore wind farm connections, and military installations. The Nord Stream pipeline sabotage in 2022 demonstrated the vulnerability of Europe's undersea infrastructure.

The drones use sonar, acoustic sensors, and computer vision to patrol designated zones continuously, detecting anomalies like unauthorized vessels, divers, or equipment near critical infrastructure. The autonomous operation is necessary because the scale of Europe's undersea network (hundreds of thousands of kilometers of cables and pipelines) makes human-operated surveillance impractical.

This represents a new domain of European defense: the seabed. NATO has established a dedicated undersea infrastructure protection command, and European nations are investing heavily in the sensor networks and autonomous vehicles needed to secure this previously unmonitored domain.