ISS Stadi

In the mirror universe, the ISS Stadi (NCC-170147) was an Imperial Starfleet vessel in service in the 25th century. The ship contained technology to maintain a trans-dimensional portal between the mirror and the primary universe.

In 2409, the Stadi was the flagship of an Imperial fleet consisting of five battle groups that took over a Federation starbase. These battle groups were defeated by ships Starfleet and the Klingon Defense Force, after which the Stadi attacked and was destroyed.