- 2 * General Electric LM2500-30 gas turbines generating 41,000 shp (31 MW) through a single shaft and variable pitch propeller
- 2 * Auxiliary Propulsion Units, 350 hp (260 kW) retractable electric azimuth thrusters for manoeuvring and docking
- AN/SPS-49 air-search radar
- AN/SPS-55 surface-search radar
- CAS and STIR fire-control radar
- AN/SQS-56 sonar
- 1 * OTO Melara Mk 75 76 mm/62 caliber naval gun
- 2 * Mk 32 triple-tube (324 mm) launchers for Mark 46 torpedoes
- 1 * Vulcan Phalanx CIWS
- 4 * .50-cal (12.7 mm) machine guns.
- 1 * Mk 13 Mod 4 single-arm launcher for Harpoon anti-ship missiles and SM-1MR Standard anti-ship/air missiles (40 round magazine)
- 1 * SH-60 LAMPS III helicopter
USS Thach (FFG-43), an Oliver Hazard Perry-class frigate, was the only ship of the United States Navy named for Admiral John Thach, a Naval Aviator during World War II, who invented the Thach Weave dogfighting tactic. Thach was laid down on 6 March 1981 by the Todd Pacific Shipyards, Los Angeles Division, San Pedro, California; launched on 18 December 1982; sponsored by Mrs. Madalyn J. Thach, widow of the namesake; and commissioned on 17 March 1984 at Long Beach, Cmdr. Dale H. Moses in command. She was the frigate long-hull variant (Flight II).