ISS Emissary

In the mirror universe, ISS Emissary was a Terran assault cruiser starship in service to Imperial Starfleet in the early 25th century. 

History
In 2409 and 2410, the Emissary was part of an Imperial fleet attacking the Romulan Republic starbase Vauthil Station. A combined task force consisting of Starfleet, KDF and Romulan Republican Force ships defended Vauthil Station against the invasion fleet, closed rifts and activated relays to power up the station's defenses. The Allies were directed by Obisek. On every occasion, the Alliance succeeded in driving the Terrans back into their realm.