MSubs XV Excalibur launches Mk 48 torpedo in AUKUS trial - 2026-09-13 - Demonstration - 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… - source: news.usni.org
MSubs receives UK SDA trial contract for CETUS XLUUV - 2026-06-26 - Contract Award - 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
MSubs-built XV Excalibur handed over to Royal Navy - 2025-12-11 - Production Milestone - 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… - source: gov.uk