The 46 Knox-class frigates were the largest, last, and most numerous of the US Navy's second-generation anti-submarine warfare (ASW) escorts. Originally laid down as ocean escorts, they were all redesignated as frigates on 30 June 1975, in the 1975 ship reclassification plan and their hull designation changed from 'DE' to 'FF'. The Knox class was the Navy's last destroyer-type design with a steam turbine powerplant.
Knox-class frigate USS Robert E. Peary (FF-1073) and the skyline of San Francisco in the background
Overhead view of Knox-class frigate USS Fanning (FF-1076)
Bow modifications including bulwark and horizontal spray strake on USS Bowen (FF-1079) in 1984.
Aerial view of Knox-class frigate USS McCandless (FF-1084)
Destroyer escort (DE) was the United States Navy mid-20th-century classification for a 20-knot warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships.
USS Evarts
USS Dealey
HMS Dacres, converted to act as a headquarters ship during Operation Neptune