Project Cetus is a crewless submarine being developed by the United Kingdom.
Named after cetus, a mythological sea monster, the project is funded by the Anti-Submarine Warfare Spearhead programme, run by the Royal Navy's “Develop Directorate” from their headquarters in Portsmouth, and delivered through the Submarine Delivery Agency in Bristol. Submarines are designed and constructed by tech company MSubs, which is based in Plymouth.12
The demonstrator was launched at the end of February 2025.3 It has been named XV Excalibur.
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References
References
- "Royal Navy orders first crewless submarine to dominate underwater battleground". www.royalnavy.mod.uk. Retrieved 3 December 2022.
- "£15.4 million contract for first cutting-edge Navy crewless submarine". GOV.UK. Retrieved 3 December 2022.
- "CETUS – the Royal Navy's first uncrewed submarine launched | Navy Lookout". www.navylookout.com. 1 March 2025. Retrieved 4 March 2025.