This system classifies Starship energy shielding by its strength related to the approximate damage a direct hit that a standard Covenant Plasma Torpedo would inflict upon the equipped ship's shields, if a single direct hit would inflict 1000 points of damage. This system is known to be used by the Sangheili, the Humans, the Habilis Ferurudis, and even the Covenant Fragments. In 2946, this system was adopted by the Proxima as well.