Royal Navy unveils 12-metre uncrewed submarine ExcaliburVon Heino Mueller / 15. Mai 2025 Royal Navy unveils 12-metre uncrewed submarine ExcaliburThe 12-metre vessel, named “Excalibur,” was presented at HMNB Devonport, attended by 200 guests, including Rear Admiral James Parkin and representatives from AUKUS nations. News-Übersicht