FFG - Guided Missile Frigates
FFG's are smaller ships than destroyers. They are designed primarily to protect other ships (such as merchant convoys), and perform some Anti-Submarine Warfare duties. They are cheaper but of more limited capability than destroyers. The last active class of frigates in the US Navy was the Oliver Hazard Perry class, decommissioned in September 2015, leaving the navy no active frigates.
On January 15, 2015 U.S. Navy Secretary Ray Mabus announced that ships of the Littoral Combat Ship (LCS) classes built in the future
would be re-classified as "frigates".
On April 30, 2020, the US Navy awarded a contract to design and produce the next generation small surface combatant, the Guided Missile Frigate (FFG(X)). The FFG(X) will have multi-mission capability to conduct air warfare, anti-submarine warfare, surface warfare,
electronic warfare, and information operations.