|Armaments:||phased polaron beams |
It was one of the largest ships involved in the conflict at twice the size of the Federation's Galaxy-class starship. For months the existence of this ship was just rumour, until the USS Valiant confirmed its existence in late 2374. In possibly its first action of the war the battleship easily accounted for the Valiant, leaving only three survivors. (DS9: "Valiant")
The battle caused enough damage to the vessel for it to return to the Val'toka II shipyards for repair. This shipyards was responsible for the construction of several other ships of this type as well as the larger and nearly identical Jem'Hadar dreadnought.
After a Starfleet Special Operations Command strike force stole a dreadnought, the prototype battleship pursued the stolen vessel. It was forced into retreat by the arrival of the USS Devastator. (Star Trek: Swiftfire: "A Dreadful Operation")