Origins and Flight I The
Chief of Naval Operations (CNO) from 1970 to 1974, Admiral
Elmo Zumwalt, sought to improve the U.S. Navy through modernization at minimal cost. Zumwalt's approach to the fleet was a "high-low mix"—a few high-end, high-cost warships supplemented by numerous low-end, low-cost warships. The introduction of the Aegis-equipped
Ticonderoga-class cruiser in the early 1980s filled the high end. The Navy started work to develop a lower-cost Aegis-equipped vessel to fill the low end and replace the aging and
Farragut class destroyers, along with the
Leahy and
Belknap class cruisers. In 1980, the U.S. Navy initiated design studies with seven contractors. By 1983, the number of competitors had been reduced to three:
Bath Iron Works,
Ingalls Shipbuilding, and
Todd Shipyards. On 3 April 1985, Bath Iron Works received a US$321.9 million contract to build the first of the class, USS
Arleigh Burke.
Gibbs & Cox was awarded the contract to be the lead ship design agent. The Navy contracted Ingalls Shipbuilding to build the second ship. Political restraints led to design restrictions, including the absence of helicopter hangars, a displacement limit of 8,300 tons, and a shorter hull than the
Ticonderoga's. To compensate for the limited length, a wide flaring bow was incorporated to maintain favorable seakeeping characteristics, and the originally planned 80,000-shaft-horsepower (shp)
LM2500 gas turbines were upgraded to 100,000 shp. The second ship, ordered two years after
Arleigh Burke, added a magazine for nine torpedoes and 150 sonobuoys adjacent to the helipad to allow for rearming of helicopters, as
Arleigh Burke was only capable of refueling them. This change was duplicated for all other Flight I ships.
Flight II The Flight II iteration of the class was introduced in FY1992. The
TADIX-B,
JTIDS Command and Control Processor, and
Link 16 improved communication with other assets. The SLQ-32 EW suite was upgraded to (V)3, and the
SPS-67(V)3 surface search radar was upgraded to (V)5. Flight II also gained the capability to launch and control the SM-2ER Block IV. An expansion of fuel capacity slightly increased the displacement.
Flight III (1988) Work on a much-improved variant known as Flight III began in 1988. It was of a
flush deck configuration and had a plug amidships to provide greater volume for combat systems and to increase the class's operational radius. Its main improvements were in ASW performance, with a helipad sized for
V-22 Osprey along with hangars and support facilities for two embarked
SH-60B LAMPS III helicopters and compatibility with the under-development
RUM-125 Sea Lance. The ship's
AAW performance was also enhanced, with 32 additional VLS cells forward,
Cooperative Engagement Capability (CEC), integrated Anti-Ship Missile Defense systems, and air warfare commander facilities to coordinate the actions of a
carrier strike group in air defense, as was found on the
Ticonderoga-class cruisers. The new AN/SAR-8 also provided the ship with an
infrared search and track capability, and
fiber optical cables replaced copper cables to improve bandwidth and reduce weight gain. To power the increased equipment load, the
AG9130 ship service gas turbine generator sets were replaced with the newer AG9140, increasing power generation from 2,500 kW to 3,000 kW each. Incorporating lessons learned from the attacks on
USS Stark in 1987 and
USS Samuel B. Roberts in 1988, five blast-resistant
bulkheads were incorporated into the ship to improve damage containment. Flight III was designed with several upgrades to be added on later ships, including new flank and towed sonar arrays,
intercooled recuperated gas turbines, and an improved fire-control system. The Phalanx CIWS systems were also to be removed, pending the availability of
RIM-162 ESSM. Despite this emphasis during the study phase, the selected design was one that did not compromise on the ship's existing performance beyond the mandated deletion of Harpoon and TACTAS. and featured numerous improvements used on Flight III. The two hangars and support facilities for LAMPS helicopters remained, albeit located differently in two hangars outboard of the aft VLS module. To accommodate the hangars, the length was increased to , and the rear-facing SPY-1D arrays are mounted one deck () higher to prevent a blind spot, as had been done on Flight III for the same reason. CEC, fiber optical data cables, redesigned propellers, blast-resistant bulkheads, were also carried over from Flight III. New to Flight IIA was the Kingfisher mine detection system, the replacement of the Strikedown cranes with six additional VLS cells, and a stern flap to reduce fuel consumption. Phalanx was temporarily retained due to developmental issues that delayed ESSM, only being removed starting with .
Congressional concerns over the retirement of the s saw the Navy begin a program to field the
Extended Range Guided Munition (ERGM) for the DDG-51 class in 1996. The ERGM was to extend the range of the class's 5-inch Mark 45 to , but required modifications to the gun. The longer 5-inch/62-caliber (127 mm) Mark 45 Mod 4 gun was installed starting with . Later ships featured several additional modifications. Starting with , the original AN/SPS-73(V)12 navigation radar was replaced by the BridgeMaster E. New signature reduction measures were incorporated: the hangars of
DDG-86 onward are made of
composite materials, and the exhaust funnels of
DDG-89 onward are shrouded by the superstructure. Ships of the class starting at this point were also slated to receive the new
AN/SLY-2 AIEWS electronic warfare suite in lieu of AN/SLQ-32, which replaced the existing jammer arrays with new ones located in both former Phalanx positions. However, AIEWS was cancelled in 2002 and no operational ship received it. However, only
Pinckney,
Momsen,
James E. Williams, and
Bainbridge were installed with the system before the RMS program was canceled in March 2016. During 2025, the destroyers' USS
Bainbridge and USS
Winston S. Churchill had been equipped with a pair of
Block 3/Coyote drone launchers to counter UAVs.
Modernization Work to design a retrofit stern flap for existing Flight I and II vessels modeled on that being used for Flight IIA began in 1996. It was first fitted to in February 2000 and was subsequently fitted to all Flight I and II ships. Trials conducted aboard that year showed the retrofit flap increased speed by 0.9 knots and reduced fuel consumption by 5.3%. The capabilities of modernized destroyers include CEC, Integrated Air and Missile Defense (IAMD), ESSM support, improved electronic support with Surface Electronic Warfare Improvement Program (SEWIP) Block 2, improved data processing with
Boeing's Gigabit
Ethernet Data Multiplex System, and improvements to
littoral warfare. In May 2014, USNI News reported that 21 of the 28 Flight I and II
Arleigh Burke-class destroyers would not receive the full mid-life upgrade that included electronics and Aegis Baseline 9 software for SM-6 compatibility; instead, they would retain the basic BMD 3.6.1 software in a $170 million upgrade concentrating on HM&E systems, and on some ships, their anti-submarine suite. Seven Flight I ships—DDGs 51–53, 57, 61, 65, 69—received the full $270 million Baseline 9 upgrade. In 2016, the Navy announced it would begin outfitting 34 Flight IIA
Arleigh Burkes with a hybrid-electric drive (HED) to lower fuel costs. The four LM2500 gas turbines of the class are most efficient at high speeds; an electric motor was to be attached to the main reduction gear to turn the drive shaft and propel the ship at speeds under , such as during BMD or maritime security operations. Use of the HED for half the time could extend time on station by 2.5 days before refueling. In March 2018, the Navy announced the HED would be installed on to test the technology, but installation on additional destroyers would be halted due to changed budget priorities. in July 2009 Also in 2016, four destroyers of the
U.S. 6th Fleet based in
Naval Station Rota, Spain (USS
Carney, USS
Ross, USS
Donald Cook, and USS
Porter) received self-protection upgrades, replacing one of their two Phalanx CIWS with a SeaRAM CIWS, which combines the Phalanx sensor dome with an 11-cell
RIM-116 launcher. This was the first time the system was paired with an Aegis ship. Another four ships (USS
Arleigh Burke, USS
Roosevelt, USS
Bulkeley, and USS
Paul Ignatius) have since been forward-deployed to Rota and also received a SeaRAM. It would be the first laser weapon put on a warship. In November 2019, had the
Optical Dazzling Interdictor, Navy (ODIN) system installed. ODIN differs from the
XN-1 LaWS previously mounted on in that ODIN functions as a dazzler, which blinds or destroys optical sensors on drones rather than shooting down the aircraft. HELIOS was delivered to the Navy in August 2022 and installed on . In 2024,
Preble successfully tested its HELIOS against a cruise missile. Also by 2018, all
Arleigh Burke-class ships homeported in the Western Pacific were scheduled to have upgraded ASW systems, including the TB-37U MFTA replacing the AN/SQR-19 TACTAS. In FY2019, the Navy started a program to procure the Mod 4 variant of the Mark 38 machine gun system to address "unmanned aerial systems (UAS) and high speed maneuverable
unmanned surface vehicle (USV) threats." Mod 4 will incorporate the 30 mm
Mk44 Bushmaster II instead of the 25 mm
M242 Bushmaster of previous variants. The Mk 38 Mod 4 is planned to be fielded on Flight IIA and III
Arleigh Burke-class destroyers. In October 2020,
National Security Advisor Robert C. O'Brien said that all three Flights of the
Arleigh Burke-class destroyer would field the
Common-Hypersonic Glide Body (C-HGB) missile developed under the
Conventional Prompt Strike program. However, the C-HGB is expected to be around wide, making it too large to fit in Mk 41 VLS tubes or on deck launchers. Installing them on
Arleigh Burke destroyers would require removing some Mk 41 cells to accommodate the larger weapon, an expensive and time-consuming process. There is criticism of this idea: the oldest Flight I ships would need a service life extension to justify refit costs that would only prolong their service lives a short time when they are already more expensive to operate, and the newest Flight III ships that are optimized for BMD would be given a new, complex mission requiring a major refit shortly after introduction. (DDG-91) near
Naval Base San Diego with DDG MOD 2.0 program adding in the AN/SLQ-32(V)7 SEWIP Block 3. About 20 Flight IIA destroyers will undergo further modernization under the DDG MOD 2.0 program. DDG MOD 2.0 will backfit SPY-6(V)4 and Aegis Baseline 10 to provide capabilities similar to Flight III ships, as well as upgrade cooling systems to support the new radar. DDG MOD 2.0 will also deliver the AN/SLQ-32(V)7 EW suite, which adds the SEWIP Block 3 electronic attack subsystem. In May 2021, the Navy approved a "Smart Start Plan" for four ships—DDGs 91, 93, 95, 97—to make a gradual transition to DDG MOD 2.0. These ships will undergo a DDG MOD 1.5 phase that provides the SLQ-32(V)7; in 2023, DDG-91 became the first destroyer to receive SLQ-32(V)7. They will then receive the SPY-6(V)4, Aegis Baseline 10, and cooling system upgrades during a later depot modernization period. It is unclear if ships with two Phalanx CIWS or ships already in a Phalanx-SeaRAM configuration will retain one Phalanx.
Production restarted was originally intended to be the last of the
Arleigh Burke class. The Navy planned to shift production to the
Zumwalt-class destroyer focusing on
naval gunfire support and littoral operations. At a July 2008 hearing however, Navy officials announced intentions to restart
Arleigh Burke production in place of additional
Zumwalts, testifying to the latter's inability to counter emerging ballistic missiles, anti-ship missiles, and
blue-water submarines.
Arleigh Burke-class destroyers have been in production for longer than any other
surface combatant class in the U.S. Navy's history. In April 2009, the Navy announced a plan limiting the
Zumwalt class to three units while ordering another three
Arleigh Burke-class ships from both Bath Iron Works and Ingalls Shipbuilding. In December 2009, Northrop Grumman received a $170.7 million letter contract for long lead-time materials. Shipbuilding contracts for DDG-113 to
DDG-115 were awarded in mid-2011 for $679.6 million–$783.6 million; these do not include government-furnished equipment such as weapons and sensors, which took the average cost of the FY2011/12 ships to about $1.843 billion per vessel. DDGs 113 through 115 are "restart" ships, similar to previous Flight IIA ships, but including modernization features such as OACE and the TB-37U MFTA, which are being backfit onto previous ships. The U.S. Navy was considering extending the acquisition of
Arleigh Burke-class destroyers into the 2040s, according to revised procurement tables sent to Congress, with the procurement of Flight IV ships from 2032 through 2041. This was canceled to cover the cost of the s, with the air defense commander role retained on one cruiser per
carrier strike group. In April 2022, the Navy proposed a procurement plan for nine ships, with an option for a tenth, to build two ships a year from 2023 to 2027. Some lawmakers pushed to add a third ship to be built in 2023, bringing the total of the proposed deal to eleven ships. This would follow the Navy's two-ship-per-year procurement from 2018 to 2022.
Flight IIA Technology Insertion DDG-116 to
DDG-124 and
DDG-127 will be "Technology Insertion" ships with elements of Flight III. For example, onward have the
AN/SPQ-9B, a feature of Flight III, instead of the AN/SPS-67. Flight III proper began with the third ship procured in 2016, (DDG-125).
Flight III (2013) In place of the canceled
CG(X) program, the U.S. Navy began detailed design work on a DDG-51 Flight III design in FY2013. The Navy planned to procure 24 Flight III ships from FY2016 to FY2031. In June 2013, it awarded $6.2 billion in destroyer contracts. Costs for the Flight III ships increased as requirements for the program grew, particularly related to the planned Air and Missile Defense Radar (AMDR) needed for the IAMD role. An AMDR with a mid-diameter of had been proposed for CG(X), while the DDG-51 Flight III design could carry an AMDR with a mid-diameter of only . The
Government Accountability Office (GAO) found that the design would be "at best marginally effective" because of the "now-shrunken radar". The U.S. Navy disagreed with the GAO findings, stating that the DDG-51 hull was "absolutely" capable of fitting a large enough radar to meet requirements. The Flight III's AN/SPY-6 AMDR with a mid-diameter of uses an active electronically scanned array with digital
beamforming, compared to the previous passive electronically scanned array AN/SPY-1D with a mid-diameter of . According to the SPY-6's contractor,
Raytheon, the 37-RMA SPY-6(V)1 is 30 times more sensitive and capable of detecting objects "half the size at twice the distance" compared to the SPY-1D. The Flight III's SPY-6 is integrated with Aegis Baseline 10. The new radar also requires more power; the three-megawatt, 450 V AG9140 generators were upgraded to four-megawatt, 4,160 V AG9160 generators. Other modifications include replacement of the
Halon-based fire suppression system with a water mist system and strengthening of the hull to support the design's additional weight. Flight III achieved IOC in 2024. a total of 24 Flight III ships have been ordered. Following the announcement of the
Trump-class battleship, commander of the Naval Surface Force, Vice Admiral
Brendan McLane said the Flight III could no longer accommodate new systems stating that the ship is now "maxed out" and that "there is nothing else we can put on the ship". ==Replacement==