The David class was a light cruiser design used by the Grayson Space Navy, the locally-built variant of the Manticoran Apollo class. Externally the two classes were similar, the David-class possessed the additional countermissile tubes of the Flight IV Apollo, while returning to the same number of broadside mounts as the original Apollo design. In addition, the Graysons replaced one broadside laser mount with a sixth missile tube and upgraded the chase energy mounts to grasers. Hull space constraints did not allow the total missile loadout to be increased, so each launcher dropped from 20 to 16 missiles.