USS Downes (DE-1070/FF-1070) was a Knox-class frigate, representing the 19th vessel in this series and the third to bear the name of Commodore John Downes. Constructed by Todd Pacific Shipyards in Seattle, Washington, her keel was laid on September 5, 1968, and she was launched on December 13, 1969. Mrs. Philip L. Kelton, her sponsor and great-granddaughter of Commodore Downes, christened her. The ship was officially commissioned into service on August 28, 1971. The Knox-class design was derived from the Brooke-class frigate, modified to improve range and without a long-range missile system. USS Downes measured 438 feet (133.5 meters) in length, with a beam of 47 feet (14.3 meters) and a draft of 25 feet (7.6 meters). At full load, she displaced approximately 4,066 long tons (4,131 metric tons). Her propulsion system comprised a single Westinghouse geared steam turbine generating 35,000 shaft horsepower, powered by two C-E boilers, driving a single propeller to achieve a maximum speed of 27 knots. She had an operational range of 4,500 nautical miles at 20 knots, suitable for extended patrols. Armament included a 5"/54 caliber Mark 42 gun forward, a single 3"/50 caliber gun aft, and an eight-round ASROC launcher positioned between the guns and the bridge. For close-range anti-submarine defense, she was equipped with two twin 12.75-inch Mk 32 torpedo tubes. The ship initially carried a DASH drone helicopter in a telescoping hangar and landing pad amidships aft of the mast. In the 1970s, this was replaced by a SH-2 Seasprite LAMPS I helicopter, resulting in an enlarged hangar and deck. Many ships of her class also saw the 3-inch gun replaced by an eight-cell BPDMS missile launcher during this period. USS Downes served actively in the Pacific Fleet, performing Anti-Submarine Warfare, escort duties, and naval diplomacy as part of Destroyer Squadron 31. Notably, during RIMPAC 89, she rescued one crew member washed overboard in heavy seas. She was decommissioned on June 5, 1992, and stricken from the Naval Vessel Register on January 11, 1995. The vessel was ultimately disposed of during fleet training in 2003, sunk during a SINKEX near Mare Island.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.