- For other uses, see Quantum.
In the mirror universe, the ISS Quantum (ICC-40859) was a 25th century Terran Empire starship, a Sao Paulo-class tactical escort in Imperial Starfleet service in the 2400s and 2410s decades. (STO - Cardassian Struggle mission: "Defend the Beta Ursae Sector Block")
Service history and disposition
In the year 2409, O'Brien organized an invasion of the Alpha Quadrant in the primary universe. The ISS Quantum was one of the ships harassing Federation and civilian supply lines in the sectors of the Beta Ursae sector block. (STO - Cardassian Struggle mission: "Defend the Beta Ursae Sector Block")
The Quantum was also one of the ships defending O'Brien's base in the Arawath system when Starfleet and the Klingon Defense Force arrived to recover the Bajoran Orb of Possibilities. The Terrans were defeated in the engagement. (STO - Cardassian Struggle mission: "The Other Side")
In the years 2409-2410, the Quantum was part of the Imperial fleets attacking Romulan Republic starbase Vauthil Station. A combined task force consisting of Starfleet, KDF and Romulan Republic Navy 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. The invasion fleet was pushed back into the mirror universe by an anti-tachyon pulse from Vauthil Station. (STO - Call to Arms mission: "Mirror Invasion")
- The Quantum was one of the Imperial starships carrying the ICC registry number.