MK33 3-inch/50-caliber gun

The MK33 3-inch/50-caliber guns were widely deployed on a variety of ships for anti-aircraft protection, but in many instances these mounts have been replaced by the more effective and longer range Vulcan/Phalanx CIWS or NATO Seasparrow missile systems. These guns were carried by most destroyer escorts and fired a 13-pound projectiles about six nautical miles.