one Mk-16 8 cell missile launcher for ASROC and Harpoon missiles
one Mk-42 5-inch/54 caliber gun Mark 46 torpedoes from four single tube launchers)
one Mk-25 BPDMS launcher for Sea Sparrow missiles, later replaced by one Phalanx CIWS, which was replaced by an NSSM Sea Sparrow
USS Downes (DE-1070/FF-1070) was the 19th in the series of the Knox class frigates. She was the third ship to be named for Commodore John Downes
Downes keel was laid 5 September 1968 by Todd Pacific Shipyards Corp., Seattle, Washington, and was christened on 13 December 1969 during launching by her sponsor Mrs. Philip L. Kelton, the great-granddaughter of the late Commodore John Downes. The ship was commissioned 28 August 1971
Downes performed Anti-Submarine Warfare operations, escort duty and naval diplomacy support, when necessary, for the Pacific Fleet. Decommissioned on 05 June 1992, Downes was stricken from the Naval Vessel Register on 11 January 1995.
Downes was disposed during fleet training in 2003.