Beta-23 was a Jem'Hadar battleship that was built using an U'lanna astro-miner. In 2402, it was terrorizing Xita and was a major threat to the Lyran Star Empire, who entrusted Brianna Reiss and the 100th Tactical Wing with the task of destroying that ship, as well as all other U'lanna starships. (Star Trek: The Stoneship Files: "Generational Ghosts")