US EditionUncrewed Robo-Submarine Named After Excalibur
- On May 20, 2025, HMNB Devonport hosted the official introduction of Excalibur, the Royal Navy’s inaugural autonomous submarine.
- The unveiling followed a three-year project called Cetus, which aimed to develop a large experimental crewless underwater vessel.
- Excalibur measures 12 meters long, displaces 19 tonnes, and is two meters wide, making it the navy's largest uncrewed submarine trialled to date.
- Commodore Marcus Rose called the naming a “significant milestone” and said upcoming trials will “rapidly develop” understanding of operating vessels this size underwater.
- Excalibur will conduct extensive sea trials over two years to help the Royal Navy accelerate technology use and improve intelligence, protections, and operational capabilities.
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Delivered to the Royal Navy the XV Excalibur
The prototype of XLUUV of the CETUS program has been delivered to the Royal Navy; the boat has been baptized XV (eXperimental Vessel) Excalibur. The CETUS is an Extra Large Autonomous Underwater Vehicle destined to the Royal Navy. The contract of the value of more than 15 million pounds for the realization of the prototype had been assigned in December 2022 to the technological company MSubs based in Plymouth. The CETUS has a length of 12 meters…
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