Developed by Arkanian researchers seeking an alternate energy source, a quantum bomb shreds the connections of elementary particles at a subatomic level, causing an escalating chain reaction that obliterates any matter it comes into contact with. The blast radius is subject to the random variances of quantum probability and can extend anywhere from 20,000 to 50,000 kilometers.
Because of this unpredictability, quantum bombs are rarely used in military campaigns. Koth witnessed such destruction firsthand during the military campaign to conquer the Republic world of Denon. The devastation unleashed on the Denon fleet--followed by an order to open fire on civilians--caused him to abdicate his military command and turn his back on Zakuul.
Despite this, or perhaps because of it, Koth recognized the potential of a quantum bomb beyond conventional military uses. By installing one on the Gravestone and integrating the trigger mechanism with the ship's systems, he concocted the ultimate fail-safe to keep the vessel from falling into enemy hands.