Averment

The Averment was a super-dreadnought in Interstellar Concordium service as a psychiatric hospital ship in the late 24th century. 

During the Day Where Students Have Stopped Calculating, the patients onboard rebelled against their military captors and captured this ship. They also managed to capture a freighter that was bound to resupply the gigantic psychiatric hospital. When the ISC was informed of the fate of the psychiatric hospital, they sent in a task force whose goal was to recapture the hospital, overrun by zombified patients. It managed to destroy a cruiser before the RIS succeeded in beaming in truth serum in the life support systems.