ISS Cheyenne

In the mirror universe, the ISS Cheyenne (NCC-73606-A) was a Terran Empire heavy cruiser in Imperial Starfleet service in the early 25th century. The Cheyenne and other Imperial vessels were found derelict by the Ferengi Lobi Consortium in the Azure Nebula and made available to Federation Starfleet and their Romulan Republic allies. (Star Trek Online official website: Season 8 Dev Blog #46)