MSubs Timeline

Events

• 2026-09-13 - Demonstration - MSubs XV Excalibur launches Mk 48 torpedo in AUKUS trial - Project Broadsword and Trial Iron tested integration of a US kinetic payload on a UK uncrewed vessel. The trial validated mechanical, electrical and software integration, rather than autonomous target selection. Follow-on Project Cutlass work will use… - source: news.usni.org
• 2026-06-26 - Contract Award - MSubs receives UK SDA trial contract for CETUS XLUUV - The work covers underwater-autonomy risk reduction and payload testing. MSubs' proprietary knowledge of the vehicle was the stated basis for direct award. The notice estimates a contract period ending on May 1, 2028. - source: sell2wales.gov.wales
• 2025-12-11 - Production Milestone - MSubs-built XV Excalibur handed over to Royal Navy - The 12 m vessel was developed under Project CETUS with the Submarine Delivery Agency. Earlier trials included remote control from Australia while the vessel remained in UK waters. A quantum optical atomic clock from Infleqtion had also been trialled aboard… - source: gov.uk
• 2025-12-03 - Partnership - Li-S Energy and MSubs launch UUV battery-testing collaboration - MSubs will provide a specialised pressure-test chamber for trials at Li-S Energy's Geelong facility. The initial programme covers submarine-depth pressure and endurance testing designed to simulate multi-day deployments. Only if the trials succeed will the… - source: announcements.asx.com.au
• 2022-03-08 - Partnership - MSubs and Sonardyne advance autonomous naval-platform capabilities - The MoU covers integration and evaluation of Sonardyne’s navigation, communications and imaging payloads on MSubs’ 9 m extra-large uncrewed underwater vehicle. The named equipment includes SPRINT-Nav X for inertial-Doppler navigation, AvTrak 6 for long-range… - source: sonardyne.com
• 2020-03-05 - Contract Award - MSubs wins Royal Navy XLUUV test submarine contract - The first phase would refit a crewed submersible with autonomous control systems. A further GBP1.5 million was conditional on successful initial testing. The programme explored surveillance, reconnaissance and anti-submarine warfare applications. - source: gov.uk