BAE Systems Herne XLAUV Advances Autonomous Undersea Warfare with New Capabilities for Future Naval Missions.

BAE Systems is showcasing its Herne Extra Large Autonomous Underwater Vehicle (XLAUV) at Euronaval 2026 in Paris, from November 3 to 6, introducing an advanced underwater platform designed to transform naval surveillance, anti-submarine warfare, and subsea infrastructure protection. Powered by the Nautomate autonomous control system, Herne combines long-endurance operations, low acoustic signature, and modular mission payloads to operate in contested waters with minimal human intervention. Its capabilities could enable navies to extend their underwater reach, monitor emerging threats, and reduce reliance on crewed submarines, supporting a new era of autonomous undersea warfare.

At Euronaval 2026 in Paris, BAE Systems showcases its Herne XLAUV, a modular autonomous underwater vehicle designed to extend naval surveillance, support anti-submarine warfare and protect critical subsea infrastructure during contested maritime operations (Picture Source: Army Recognition Group)

BAE Systems is reinforcing its position at the forefront of next-generation naval technology with the presentation of its Herne Extra Large Autonomous Underwater Vehicle (XLAUV) at Euronaval 2026 in Paris, held from 3 to 6 November. Featured in the company's official exhibition announcement, Herne represents a significant advancement in autonomous underwater operations, offering navies a highly adaptable capability to extend their operational reach, strengthen maritime surveillance and reduce reliance on high-value crewed platforms in increasingly contested maritime environments. The presentation also reflects BAE Systems' wider vision of integrated maritime combat capabilities, connecting autonomous platforms, secure networks and advanced mission systems to improve the operational effectiveness and resilience of modern naval forces.

Herne XLAUV Combines Advanced Autonomy with Modular Underwater Mission Capabilities

Developed by BAE Systems, one of the world's leading defence and aerospace companies, Herne is a modular, highly configurable autonomous underwater platform designed specifically for military operations. Drawing on the company's extensive expertise in submarine engineering, naval architecture and complex maritime systems, Herne integrates advanced battery, propulsion and autonomous control technologies to support extended mission endurance. Its architecture incorporates adaptable payload modules and additional hull sections, allowing the vehicle to be configured for different operational requirements. These include anti-submarine warfare (ASW), intelligence, surveillance and reconnaissance (ISR), and the protection of critical national infrastructure.

BAE Systems has also designed Herne with a low acoustic signature, secure communications, accurate navigation and flexible launch-and-recovery arrangements, including potential deployment from harbours, surface ships and submarines. Importantly, Herne's continued development reflects BAE Systems' progression beyond the original Herne Alpha technology demonstrator toward a more mature, military-oriented underwater capability. The evolution of its modular framework, payload architecture and system assurance demonstrates the company's commitment to translating autonomous underwater innovation into a practical capability for future naval operations.

Related Topic: UK Calls Industry to Shape Royal Navy’s Future Type 93 Extra-Large Uncrewed Submarine Force

Central to Herne's capabilities is BAE Systems' Nautomate autonomous control system, which enables the platform to execute assigned missions with a high degree of autonomy while operating within an established command architecture. The technology was successfully demonstrated during in-water trials in the United Kingdom in 2024, conducted in collaboration with Canadian underwater technology specialist Cellula Robotics. The two companies subsequently signed a ten-year strategic partnership agreement in 2025 to support continued development and market delivery. Beyond its operational flexibility, Herne is also being developed toward certification under Lloyd's Register's Unmanned Marine Systems Code and classification under its Submersibles and Diving Systems Rules, an important step toward establishing internationally recognised safety and assurance standards for large military autonomous underwater vehicles.

Expanding Underwater Dominance Through Persistent and Distributed Naval Operations

Herne's strategic importance extends beyond its technological architecture. Modern naval warfare increasingly requires sustained surveillance of strategically sensitive maritime areas, protection of subsea communications and energy infrastructure, and the ability to monitor potential submarine threats without continuously committing scarce and expensive crewed assets. In this environment, autonomous underwater platforms offer an opportunity to distribute sensors and mission payloads across a wider operational area while reducing personnel exposure and preserving major warships and submarines for higher-priority missions. Herne's modular architecture could allow naval forces to adapt mission configurations as operational demands evolve, while its secure digital integration capabilities support the development of more connected maritime forces. This approach reflects the broader transition toward distributed maritime operations, in which crewed and uncrewed systems complement one another to enhance situational awareness, operational resilience and the effectiveness of naval command decisions.

Herne's Strategic Relevance to Britain's Future Hybrid Navy and Type 93 Ambitions

The presentation of Herne at Euronaval 2026 also comes at a significant moment for the United Kingdom's future underwater warfare strategy. The British Ministry of Defence issued a preliminary market-engagement notice on 12 October 2026 seeking industrial input for the Royal Navy's proposed Type 93 Extra-Large Uncrewed Underwater Vehicle capability and associated AUKUS Pillar II initiatives. The programme forms part of Britain's transition toward a Hybrid Navy combining crewed warships and submarines with autonomous platforms. Herne's emphasis on mission modularity, autonomous control, payload integration and persistent underwater operations demonstrates the relevance of BAE Systems' technological approach to the capabilities being examined for future British naval requirements. Although Herne has not been selected for Type 93 and the programme remains at the preliminary market-engagement stage, the platform illustrates the industrial expertise and engineering capabilities available within the United Kingdom to support the development of future autonomous underwater forces and potentially strengthen interoperability among allied navies.

BAE Systems' presentation of Herne at Euronaval 2026 underscores the growing strategic importance of autonomous underwater systems in shaping the future maritime battlespace. By combining established naval engineering expertise with advanced autonomy, configurable payloads and military-focused system assurance, the company is advancing a capability designed to address some of the most demanding requirements of modern naval operations. As international navies seek to extend underwater surveillance, protect critical maritime infrastructure and integrate uncrewed platforms alongside conventional fleets, Herne highlights how British defence innovation could contribute to a more persistent, adaptable and technologically integrated generation of naval forces.

Explore More Defense News

• Land Defense News
• Naval Defense News
• Defense Aerospace News

Written by Teoman S. Nicanci – Defense Analyst, Army Recognition Group

Teoman S. Nicanci holds degrees in Political Science, Comparative and International Politics, and International Relations and Diplomacy from leading Belgian universities, with research focused on Russian strategic behavior, defense technology, and modern warfare. He is a defense analyst at Army Recognition, specializing in the global defense industry, military armament, and emerging defense technologies.