While it is always referred to as a bomb, it functions as a cluster of highly explosive guided missiles/torpedoes in practice. Due to the nature of the Hollow and its Imulsion-flooded tunnels, this torpedo-based design was the most efficient way to deploy the Lightmass warheads. Consequently, the weapon requires an immense amount of data on the area between the launch point and targets to guide the individual projectiles. It is a very destructive weapon when used effectively.