The Knox-class ships were armed with a 5"/54 caliber Mark 42 gun forward and a single 3-inch/50-caliber gun aft. They mounted an eight-round RUR-5 ASROC launcher between the 5-inch (127 mm) gun and the bridge.
The Knox-class ships were armed with a 5-inch/54 caliber Mark 42 gun forward, a single 3-inch/50-caliber gun aft, and an eight-round RUR-5 ASROC launcher between these two guns.