UNS Citadel — lead ship of the Citadel class, the UN’s first carrier, commissioned at the Deimos shipyard on 2 April 2165 as flagship ceremony of the UN Strategic Fleet Command’s establishment. First Fleet’s CAI fleet core is embarked aboard the carrier. The Civil Fleet Registry classes Citadel-class carriers as mobile stations. UNS Acropolis, second of the class, remains under construction at Deimos with completion scheduled for 2167.