Autonomous submarine XV Excalibur handed to Royal Navy - Naval News

https://www.navalnews.com/naval-news/2026/01/autonomous-submarine-xv-excalibur-handed-to-royal-navy/

The UK Submarine Delivery Agency (SDA) announcement on 11 December 2025 that it handed over autonomous submarine XV Excalibur to the Royal Navy. Excalibur is a 12-metre experimental vessel