Fletcher-Class 1950s (Armament Conversions)
Thirty-nine (39) Fletcher-class destroyers that received the 1950s armament update replacing their 40-mm gun mounts with 3-in. gun mounts. Other class improvements, such as radar and sonar, were also made at that time. The converted ships had the following equipment: four 5-in./38 cal. single MK 30 gun mounts, three twin 3-in/50 cal. gun mounts, one quintuple 21-in. MK 14 torpedo tube mount, two MK 10/11 hedgehog mounts, one MK 9 depth charge release track, tripod foremast with SPS-6 and SPS-10 radars, and QHB sonar.

Editor’s note: DD-538 and 541 were scheduled for conversion but not refitted. Others were modified for foreign owners but did not serve in this configuration in the U.S. Navy.