Projectile Cannons existed in several versions. The most commonly used was a light version with fixed forward-fire mounted on Blade-class Interceptors, as well as other Kushan fighter craft. Some of them were still in use during the Cataclysm Era. The second most common version, a medium turreted gun, was used on almost all Kushan corvettes, most notably on the Tempest-class Multi-Gun Corvettes, which were developed to counter the massed Kadeshi fighters. Finally, large Projectile Cannon turrets were used by Kushan frigates and other capital ships, like the Vengeance-class Assault Frigates. A longer reload time was compensated by a more powerful shot.