Dstl maps systems approach for Hybrid Navy

Defence Science and Technology Laboratory (Dstl) has detailed the operational analysis supporting the Royal Navy’s Hybrid Navy concept, setting out how crewed and uncrewed platforms, digital networks, sensing, communications, and decision-making are being considered as parts of one force. The work supports programmes including Atlantic Shield, Atlantic Bastion, Atlantic Strike, and the Maritime Fighting Web.

Dstl carried out the work on behalf of the Royal Navy under the First Sea Lord’s 100-day challenge in late 2025, completing a rapid programme of operational analysis and technical advice in around three months. Military personnel, wider defence organisations, and industry specialists contributed through workshops, tabletop exercises, and targeted modelling. The analysis examined sensing, communications, decision-making, and operational effects across the wider force rather than beginning with the performance of a single platform.

Atlantic Shield provides the clearest example of that approach. The concept considers how crewed and uncrewed systems, digital networks, and new operating methods could be combined to protect critical UK and NATO maritime routes. In engineering terms, that shifts part of the problem away from designing an individual autonomous vessel and towards the interfaces connecting sensors, communications, command software, operators, and the wider fleet.

A capable uncrewed surface or underwater vehicle can still add limited value if its sensor data cannot be shared securely, if command systems cannot task it, or if communications fail when the platform is outside a benign test environment. The same applies to distributed sensors and effectors. Data formats, network resilience, latency, cyber protection, timing, and human decision processes determine whether separate pieces of equipment behave as one capability or remain a collection of incompatible systems.

The Royal Navy is already encountering those integration requirements in mine countermeasures. Earlier this year, the service docked the uncrewed mine-hunting vessel RNMB Ariadne inside RFA Lyme Bay after autonomous trials. That work combined an uncrewed vessel, towed sonar, remote operation, and a mothership, illustrating how maritime autonomy depends on launch and recovery, communications, support, and command arrangements as much as the vehicle itself.

Hybrid Navy extends the same systems problem into a wider range of missions. Dstl says Atlantic Bastion, Atlantic Strike, and the Maritime Fighting Web sit alongside Atlantic Shield in the future naval work it is supporting, although the 26 August case study does not announce new procurement competitions or identify equipment that has been selected. The current output is analytical evidence intended to help the Navy shape requirements before individual acquisition decisions are fixed.

That sequencing can reduce integration risk. Naval platforms may remain in service for decades, while sensors, software, communications equipment, and autonomous systems can change much faster. If interfaces are fixed around a narrow set of suppliers or technologies early in a programme, later upgrades can require expensive redesign; if architectures are too open without sufficient configuration control, assurance and cyber security become harder to manage.

Industry involvement during requirements development gives suppliers early visibility of the operational problems being examined, but it also creates pressure for systems to work within common architectures. The Navy will need to balance interoperability against security, intellectual property, safety, and responsibility for system performance. Those questions are particularly difficult where software from several suppliers has to pass commands or data between crewed and uncrewed platforms under degraded communications.

The work also sits within the UK’s broader emphasis on digital capability, autonomy, and faster technology adoption. The 2025 Strategic Defence Review called for the armed forces and defence industry to adapt to changes in warfare, but that policy depends on the less visible disciplines of modelling, experimentation, systems engineering, and requirements definition. Dstl’s Hybrid Navy analysis is part of that layer, testing combinations of capability before the Navy commits money to a specific technical solution.

There is still a substantial distance between an analytical concept and a fielded hybrid fleet. Future programmes will have to define what is procured, which systems carry command authority, how autonomy is assured, how data moves between classifications and networks, and how new equipment is supported at sea. They will also have to demonstrate that uncrewed systems reduce workload or risk without creating an integration burden that simply reappears elsewhere in the force.

Dstl’s three-month study does not answer those procurement questions, and it does not claim to. It establishes a systems-level evidence base for the next stages of Royal Navy development, with the links between platforms receiving attention before the platforms themselves are locked into individual programmes. The next measurable progress will come when that analysis appears in funded requirements, integration trials, and procurement decisions across the Hybrid Navy portfolio.