Each spaceship within the "Eve Online" universe has a different set of characteristics, and can be fitted with different combinations of modules, subject to their fitting requirements. Ships have a wide variety of characteristics, including power grid, CPU, capacitor size and recharge rate, energy shields, armor, maximum velocity, agility, locking range, and maximum number of lockable targets. A ship's systems also receive bonuses depending on the ship's pilot's levels of various skills. These bonuses usually correspond to the role the ship has been designed for, and thus vary widely. For instance, the Caldari "Caracal" cruiser has a bonus to the rate of fire of certain missile launcher types, while the Gallente "Vexor" cruiser has a bonus to the damage and hitpoints of certain types of combat drones.