Four Knox-class frigates steaming alongside

USS Badger (FF-1071). A Knox-class frigate

Knox class frigates were United States Navy ships, originally laid down as ocean escorts (formerly called destroyer escorts), but were all redesignated as frigates on 30 June 1975 in the USN 1975 ship reclassification and their hull designation changed from DE to FF. Image File history File links Download high-resolution version (2830x1900, 1715 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Knox class frigate ... Image File history File links Download high-resolution version (2830x1900, 1715 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Knox class frigate ... Image File history File links USS_Badger_FF_1071_1975. ... Image File history File links USS_Badger_FF_1071_1975. ... USN redirects here. ... Ocean escort was a United States Navy warship. ... A Destroyer Escort (DE) is classification for a small, comparatively slower warship designed to be used to escort convoys of merchant marine ships, primarily of the United States Navy in World War II. It is usually employed primarily for anti-submarine warfare, but also some protection against aircraft and smaller... For the bird, see Frigatebird. ... is the 181st day of the year (182nd in leap years) in the Gregorian calendar. ... Year 1975 (MCMLXXV) was a common year starting on Wednesday (link will display full calendar) of the Gregorian calendar. ... The United States Navy reclassified many of its surface vessels in 1975, changing terminology and hull classification symbols for aircraft carriers, cruisers, frigates, and ocean escorts. ...

The lead ship of the class was the USS Knox (DE-1052), laid down October 5, 1965 and commissioned April 12, 1969, at Todd Shipyards in Seattle. USS Knox (FF-1052), originally (DE-1052) and the second to be called Knox, was the prototype and lead ship in a new class of destroyer escorts in the United States Navy. ... Todd Shipyards is a shipyard company that has been in business since 1916. ...

These ships were designed primarily as antisubmarine (ASW) platforms. They each had AN/SQS-26 hull-mounted sonar manufactured by General Electric and capable of active echo ranging in the 3.2 kHz range. The active modes of operation included omni-directional, phased directional, bottom bounce, and convergence zone. The battle displays included A and B scans. There was also a "Unit 31" chart readout display capable of long-distance passive detection, often well beyond the ranges capable of the surface search radar. The frigates were also equipped with an AN/AQS-35V Independent Variable Depth Sonar (IVDS) manufactured by EDO Corporation of College Point, NY, operating actively in the 13 kHz range with dual Planned Position Indicator (PPI) battle displays. The IVDS' sonar transducers were packaged within a 2 ton fiberglass-enclosed "fish" containing the sonar array and a gyro-compass/sensor package launched by the massive 13V Hoist from a stern compartment, located just beneath the main deck, to depths of up to 600 feet (180 m). The IVDS could take advantage of water layer temperature conditions in close-range (less than 20,000 yard) submarine detection, tracking and fire-control. Anti-submarine warfare is a term referring to warfare directed against submarines. ...

At 4,200 metric tons (4,130 tons), with a length of 438 feet (133.5 metres)and a beam of 47 feet (14.3 m), they are driven by a single screw geared turbine developing 35,000 shaft horsepower (26 MW), giving them a speed of 27 knots (50 km/h). The steam plant for these ships consists of two Babcock & Wilcox "D" type boilers, each equipped with a high-pressure (supercharger) forced draught air supply system, allowing a plant working pressure of 1,200 PSI and 1000 °F superheat. This design allows fast acceleration, crucial while prosecuting a submarine attack. They are equipped with one 5 in (127 mm) 54 calibre Mark 42 gun forward, an ASROC abaft the gun and forward of the bridge. Since they are single purpose platforms their surface defense capability is nominal; however they do mount Harpoon missiles and Mk-46 torpedoes. The aft weapons point was originally outfitted with Mk 25 basic point defense missile systems (BPDMS) for launching Sea Sparrow missiles. These were eventually refitted with a 20 millimetre Phalanx CIWS. They are equipped with a helicopter hangar aft. This article is about the unit of length. ... The Babcock & Wilcox Company is an American firm engaged in the design, engineering, manufacture, service and construction of power generation and pollution control systems and equipment for utilities and industries. ... An older Matchbox ASROC launcher, phased out in the 1990s ASROC (for Anti-Submarine ROCket) is an urgent-attack, all-weather, all sea-conditions anti-submarine missile system, developed by the United States Navy, and installed on over 200 surface ships, generally cruisers and destroyers. ... A Harpoon missile on display at the USS Bowfin museum at Pearl Harbor, Hawaii. ... A RIM-7 Sea Sparrow being launched from the USS Essex (LHD-2) The AIM-7 Sparrow is a medium-range semi-active radar homing air-to-air missile operated by the USAF, US Navy, and USMC as well as various allied air forces. ... Block 1 CIWS The Phalanx CIWS (Close-in weapon system, pronounced see-wiz) is an anti-missile system that was designed and manufactured by the General Dynamics Corporation, Pomona Division. ...

These ships were retired with the end of the Cold War and the removal of the need for an advanced ASW capability. By 1994 all ships of this class had been retired from the US Navy, although some remain in service with foreign nations such as Egypt, Taiwan, Thailand, Turkey and Mexico. For other uses, see Cold War (disambiguation). ...

Chi Yang Class

In the 1990s the US agreed to transfer 8 Knox-class Frigates to the Republic of China (Taiwan)'s Navy (ROCN). The ROCN planned to upgrade these ships with new air defense, anti-submarine, and electronic warfare capabilities, including new radar, towed active sonar, CIWS guns, VL air defense missiles, active/passive electronic warfare systems, etc. However, due to budget considerations and acquisition of newer ships, only few upgrades have actually been implemented. These frigates were named Chi Yang Class and assigned to the ROCN 168 Patrol Squadron. [1]

By 2005 the ROCN had removed several systems from the old Gearing-class Frigate upgrade program, and transferred them to the Chi Yang Class FFG. These systems include SM-1MR standard missile in box launchers, H-930 modular combat system, DA-09 air/surface search radar, and the Mk 75 76/62 rapid-fire gun (replacing the older Mk 42 127 mm/5" gun). Each Chi Yang class frigate has 10 SM-1 missiles installed in 2 x forward twin box launchers on top of the helicopter hanger, and 2 x triple box launchers installed between the stack and the hanger, pointing to port and starboard. [2]

The anti-submarine capability of the Chi Yang class FFG is provided by its SQS-26 bow-mounted sonar, SQS-35(v) VDS, SQR-18(v)1 passive TAS, MD500 ASW helicopter, Mk-16 8-cel Harpoon/ASROC box launcher, and 4 x Mk.46 324 mm torpedoes. While on ASW patrol, the frigate will carry 2 x Harpoon SSM and 6 x ASROC's in its Mk-16 box launcher. [3]

Specifications

• Displacement: 3,011 tons (3,877 full load) [3,059 metric tons (2923 t full load)]
• Length overall: 438 ft (133.5 m)
• Beam: 46 ft 9 in (14.25 m)
• Draught: 24 ft 9 in (7.6 m)
• Propulsion: one westinghouse steam turbine. total 35,000 shp, maximum
• Speed: over 27 knots (50 km/h)

Units

USS Knox (FF-1052), originally (DE-1052) and the second to be called Knox, was the prototype and lead ship in a new class of destroyer escorts in the United States Navy. ... USS Roark (FF-1053), originally USS Roark (DE-1053), was laid down on 2 February 1966 by the Todd Shipyards Corp. ... The USS Gray (FF-1054) was a United States Navy Knox class frigate. ... The USS Hepburn (FF-1055) was a United States Navy Knox class frigate named for Arthur Japy Hepburn. ... The USS Connole (FF-1056) was a Knox class frigate. ... The USS Rathburne (FF-1057) was a Knox class frigate of the US Navy. ... The USS Meyerkord (FF-1058) was a Knox class frigate of the US Navy. ... The USS (FF-1059) was a Knox class frigate. ... USS Lang (FF-1060) was a Knox class frigate of the US Navy. ... The USS Patterson (FF-1061) was a Knox class frigate. ... The third USS Whipple (DE-1062) was a Knox-class destroyer escort, later redesignated as a frigate (FF-1062) in the United States Navy. ... USS Reasoner (FF-1063) was a Knox class frigate of the US Navy. ... USS Lockwood (FF-1064) was the 13th Knox class Destroyer Escort, redesignated a Fast Frigate in 1975. ... The third USS Stein (DE-1065) was a Knox-class destroyer escort, later redesignated as a frigate (FF-1065) in the United States Navy. ... USS Marvin Shields (FF-1066) was a Knox class frigate of the US Navy. ... Mariano Abasolo (1780?-1819) was a Mexican revolutionist, born at Dolores, Guanajuato. ... The Francis Hammond (FF-1067) is the ninth Knox class frigate. ... USS Vreeland (FF-1068) was a Knox class frigate of the US Navy. ... USS Bagley (FF-1069) was the 18th ship in the Knox-class frigate. ... USS Downes (DE-1070/FF-1070) was the 19th in the series of the Knox class frigates. ... USS Badger (FF-1071) was a Knox-class destroyer escort, originally designated as DE-1071 and reclassified as a frigate (1975) in the United States Navy. ... USS Blakely (FF-1072) was a Knox-class destroyer escort, originally designated as DE-1072 and reclassified as a frigate (1975) in the United States Navy. ... The USS (FF-1073) was a Knox class frigate. ... USS Harold E. Holt (FF-1074) was a Knox class frigate named after Harold Holt. ... USS Trippe (FF-1075) was a Knox class frigate of the US Navy, built at Westwego, Louisiana, was commissioned in mid-September 1970. ... USS Fanning (FF-1076), a Knox-class frigate, is the 3rd ship of the United States Navy to be named for Nathaniel Fanning. ... 12 December 1970 -- 3 August 1993 USS OUELLET (FF-1077) was the first ship of the United States Navy to bear the name of Seaman David George Ouellet. ... HTMS Phutthaloetla Naphalai (FFG 462) is the former USS Ouellet (FF-1077), Knox class frigate. ... USS Joseph Hewes (FF-1078) was a Knox class frigate of the US Navy. ... USS Bowen (FF-1079) was a Knox class frigate built for the United States Navy by Avondale Shipyard, Westwego, Louisiana. ... The USS Paul (FF-1080) was a Knox class frigate built for the United States Navy by Avondale Shipyard, Westwego, Louisiana. ... The USS Aylwin (FF-1081) was a United States Navy Knox class frigate. ... Five ships of the United States Navy have been named USS Montgomery, the first four after the Revolutionary War general Richard Montgomery, and the fifth after Admiral John B. Montgomery (though sometimes said to be after Richard Montgomery also). ... The USS Cook (FF-1083) was a Knox class frigate built for the United States Navy by Avondale Shipyard, Westwego, Louisiana. ... The USS McCandless (FF-1084) was a Knox class frigate of the US Navy. ... The USS (FF-1085) was a Knox class frigate. ... The USS Brewton (FF-1086) was a Knox class frigate. ... USS Kirk (FF-1087) was a Knox-class destroyer escort, originally designated as DE-1087 and later reclassified as a frigate in the United States Navy. ... USS Barbey (DE-1088/FF-1088) was a Knox class frigate of the US Navy. ... USS (De/FF/FFT-1089) was named after the first African-American Naval Aviator in the US Navy. ... The USS Ainsworth (FF-1090) was a Knox class frigate. ... USS Miller (FF-1091), originally (DE-1091) was a Knox class frigate of destroyer escorts in the United States Navy. ... The USS Thomas C. Hart (FF-1092) was a Knox class frigate, named for Admiral and Senator Thomas C. Hart. ... USS Capodanno FF 1093. ... USS Pharris (FF-1094) was a Knox-class destroyer escort, originally designated as DE-1094 and later reclassified as a frigate in the United States Navy. ... Named after Quincy Hightower Truett, who received the Navy Cross posthumously. ... HTMS Phutthayotfa Chulalok (FFG 461) is the former USS Truett (FF-1095), Knox class frigate. ... The USS Valdez (FF-1096) is the forty-fifth Knox class frigate and was built by Avondale Shipyard, Oswego, Louisiana, but Originally assigned as a KNOX class destroyer escort and was assigned (DE-1096). ... The USS Moinester (FF-1097) was a Knox class frigate. ...

External links

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Knox class frigates

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