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65-619: USS Sam Nunn (DDG-133) is a planned Arleigh Burke -class guided missile destroyer of the United States Navy , the 83rd overall for the class. She was named on 6 May 2019 by Navy Secretary Richard V. Spencer in honor of Samuel Augustus Nunn, Jr. Nunn was a U.S. Senator representing Georgia, who served in Congress from 1972 to 1997, and was chairman of the Senate Armed Services Committee and

130-583: A $ 170.7 million letter contract for USS  John Finn  (DDG-113) 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. DDG 113-115 are "restart" ships, similar to previous Flight IIA ships, but including modernization features such as OACE and

195-415: A SeaRAM. In February 2018, Lockheed Martin received a contract to deliver its High Energy Laser with Integrated Optical-dazzler and Surveillance (HELIOS) system for installation onto an Arleigh Burke destroyer. HELIOS is a "60+ kW"-class laser, scalable to 120 kW, that can "dazzle" or destroy small boats and UAVs up to 8.0 km (5 mi) away. It would be the first laser weapon put on

260-485: A contract to modernize 11 ships. 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

325-454: A floating structure they will need to be calculated for all six motions and for all relative wave headings. Ship motions are important for determining dynamic loading on the crew, passengers, ship system components, secured cargo, and structural elements. Excessive ship motions may hinder the vessel's ability to complete its mission such as the deployment and recovery of small boats or aircraft. A measure of an individual's ability to complete

390-482: A given amount of exposure time. A commonly accepted limit of MSI is 20% occurrence of sea sickness over a four-hour exposure period. A small percentage of people are very susceptible to sea sickness and become ill even in the slightest conditions, while other people rarely get sea sick despite severe conditions. It has also been shown that most people acclimate to ship motions within a period of about four days, but some never acclimate at all. Seakeeping directly impacts

455-823: A secondary anti-ship role. The SM-2 uses semi-active radar homing (SARH); up to three targets may be simultaneously intercepted as the Arleigh Burke s have three AN/SPG-62 fire-control radars for terminal target illumination. The SM-6, which provides over-the-horizon defense, and the SM-2 Block IIIC feature a dual-mode seeker with active radar homing (ARH) capability; they do not have to rely on external illumination, so more targets may be intercepted simultaneously. Flights IIA and III—and modernized Flight I and II ships—can carry RIM-162 Evolved SeaSparrow Missiles (ESSMs), which provide medium-range air defense and are also capable of targeting other ships. ESSM

520-615: 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. 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 similar capabilities to Flight III ships, as well as upgrade cooling systems to support

585-524: A specific task while on board a moving ship is the motion-induced interruptions (MII). It gives an indication of the number of events in which a standing person will look for support in order to maintain balance. MII is measured in occurrences per hour. Ship motions have physiological effects on ship passengers and crew. The magnitudes and accelerations of ship motions, (particularly heave, roll and pitch ) have adverse effects on passengers and shipboard personnel. Sea sickness will have negative effects on

650-431: A steel hull with a superstructure made of lighter aluminum to reduce top weight, but the lighter metal proved vulnerable to cracking. Aluminum is also less fire-resistant than steel; a 1975 fire aboard USS  Belknap gutted her aluminum superstructure. Battle damage to Royal Navy ships exacerbated by their aluminum superstructures during the 1982 Falklands War supported the decision to use steel. Other lessons from

715-529: A total of four or eight Harpoons, providing an anti-ship capability with a range in excess of 65 nautical miles (120 km; 75 mi). During Exercise RIMPAC 2024, DDG-62 , a Flight I ship, launched a Naval Strike Missile (NSM); the launchers for the Harpoons were removed to make room for the NSM's proprietary launch boxes. The class can perform tactical land strikes with VLS-launched Tomahawks . With

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780-689: A warship. In November 2019, USS  Dewey  (DDG-105) had the Optical Dazzling Interdictor, Navy (ODIN) system installed. ODIN differs from the XN-1 LaWS previously mounted on USS  Ponce 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 USS  Preble  (DDG-88) . Preble

845-504: Is important to pre-determine the behavior of the ship or floating structure when it is subjected to waves. This can be calculated, found through physical model testing and ultimately measured on board the vessel. Calculations can be performed analytically for simple shapes like rectangular barges, but need to be calculated by computer for any realistic shaped ship. The results of some of these calculations or model tests are transfer functions called response amplitude operators (RAOs). For

910-921: Is named for Admiral Arleigh Burke , an American destroyer officer in World War II and later Chief of Naval Operations . With an overall length of 505 to 509.5 feet (153.9 to 155.3 m), displacement ranging from 8,300 to 9,700 tons, and weaponry including over 90 missiles, the Arleigh Burke -class destroyers are larger and more heavily armed than many previous classes of guided-missile cruisers . These warships are multi-mission destroyers able to conduct anti-aircraft warfare with Aegis and surface-to-air missiles ; tactical land strikes with Tomahawk missiles ; anti-submarine warfare (ASW) with towed array sonar , anti-submarine rockets , and ASW helicopters ; and anti-surface warfare (ASuW) with ship-to-ship missiles and guns. With upgrades to their AN/SPY-1 radar systems and their associated missile payloads as part of

975-506: Is small enough to be quad-packed into a single Mk 41 VLS cell. ESSM Block 1 uses SARH, guided similarly to older SM-2s. ESSM Block 2, which achieved initial operating capability (IOC) in 2021, features a dual-mode seeker with ARH capability. The SM-3 , SM-6, and SM-2ER Block IV provide Ballistic Missile Defense (BMD), the SM-3 being an exoatmospheric interceptor and the latter two having terminal phase anti-ballistic capability. So vital has

1040-613: 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, USS  Jack H. Lucas (DDG-125). 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

1105-600: The AN/SPY-1 D passive electronically scanned array (or the AN/SPY-6 active electronically scanned array on Flight III ships), which allows continual tracking of targets simultaneous to area scans. The system's computer control also allows centralization of the previously separate tracking and targeting functions. The system is resistant to electronic countermeasures . The Standard Missile SM-2MR / ER and SM-6 provide area air defense, though they may also be used in

1170-685: The AN/SQQ-89 ASW combat system, which is integrated with Aegis. It encompasses the AN/SQS-53C bow-mounted sonar and a towed array sonar, though several Flight IIA ships do not have a towed array. The towed array is either the AN/SQR-19 Tactical Towed Array Sonar (TACTAS) or the newer TB-37U Multi-Function Towed Array (MFTA). The ships can carry standoff RUM-139 vertical launch anti-submarine rockets . A Mark 32 triple torpedo tubes mount on each side of

1235-674: The AN/WLD-1 Remote Minehunting System (RMS). However, only Pinckney , Momsen , and Bainbridge were installed with the system before the RMS program was canceled. Efforts to modernize the Arleigh Burke class began amid congressional concerns over the retirement of the Iowa -class battleship . In 1996, the Navy began a program to field the Extended Range Guided Munition (ERGM) for

1300-512: The Aegis BMD role become that all ships of the class are being updated with BMD capability. By January 2023, there were 51 BMD-capable Arleigh Burke -class destroyers. Flight III ships have been delivered since 2023 with AN/SPY-6(V)1 radars and improved BMD capabilities; Flight IIA ships are also planned to receive these upgrades with AN/SPY-6(V)4 radar retrofits. Flights I and II carry two stand-alone Harpoon anti-ship missile launchers for

1365-543: The Aegis Ballistic Missile Defense System , as well as the introduction of the AN/SPY-6 radar system, the class has also evolved capability as mobile anti-ballistic missile and anti-satellite platforms. The lead ship of the class, USS  Arleigh Burke , was commissioned during Admiral Burke's lifetime on 4 July 1991. With the decommissioning of the last Spruance -class destroyer, USS  Cushing , on 21 September 2005,

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1430-566: The Arleigh Burke -class ships became the U.S. Navy's only active destroyers until the Zumwalt class became active in 2016. The Arleigh Burke class has the longest production run of any U.S. Navy surface combatant . As of October 2023, all seventy-three built are active, with nineteen more planned to enter service. The Arleigh Burke -class destroyer has four variants, referred to as "Flights". Newer Flights incorporate technological advancements. The Arleigh Burke -class ships are among

1495-513: The Arleigh Burke s are more heavily armed than many preceding guided-missile cruiser classes. The Arleigh Burke -class destroyer is equipped with the Aegis Combat System , which combines information from the ship's sensors to display a coherent image of the environment and guides weapons to targets using advanced tracking and fire control. Their main radar differs from traditional mechanically rotating radars. Instead, Aegis uses

1560-595: The Conventional Prompt Strike program. However, the C-HGB is expected to be around 3 ft (0.91 m) 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

1625-424: The Optical Dazzling Interdictor, Navy (ODIN), a directed energy weapon that can target unmanned vehicles. DDG 88 is equipped with the higher-power High Energy Laser with Integrated Optical-dazzler and Surveillance (HELIOS). Flights IIA and III have two hangars for stowing MH-60 helicopters. Their Light Airborne Multi-Purpose System (LAMPS) helicopter system improves the ship's capabilities by enabling

1690-680: The Permanent Subcommittee on Investigations . This article about a specific ship or boat of the United States Armed Forces is a stub . You can help Misplaced Pages by expanding it . Arleigh Burke-class destroyer The Arleigh Burke class of guided-missile destroyers (DDGs) is a United States Navy class of destroyer centered around the Aegis Combat System and the SPY-1D multi-function passive electronically scanned array radar . The class

1755-639: 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

1820-580: The 11-cell SeaRAM. It is unclear if ships with two Phalanx CIWS or ships already in a Phalanx-SeaRAM configuration will retain one Phalanx. USS  Michael Murphy  (DDG-112) 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 NGFS and littoral operations. However, at a July 2008 hearing, Navy officials announced intentions to restart Arleigh Burke production in place of additional Zumwalt s, testifying to

1885-495: 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

1950-561: The AN/SPS-73(V)12. Subsequent Flight IIA ships employ additional signature-reduction measures: the hangars of DDG 86 onwards are made of composite materials , and the exhaust funnels of DDG 89 onwards are shrouded by the superstructure. The use of the improved SPY-1D(V) radar, starting with USS  Pinckney  (DDG-91) , enhances the ships' ability to filter out clutter and resist electronic attack. Several Flight IIA ships were constructed without any Phalanx CIWS because of

2015-500: The DDG 51 class. The ERGM was to extend the class's 5-inch Mark 45 gun range to 63 nautical miles (117 km). It necessitated a modification of the gun; the 62-caliber Mark 45 Mod 4 was created and installed on DDG 81 and onwards in anticipation of the ERGM. However, the ERGM was canceled in 2008. The current DDG 51 modernization program is designed to provide mid-life upgrades to ensure

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2080-723: The Falklands War led to the Navy's decision to protect the Arleigh Burke class's vital spaces with double-spaced steel layers, which create a buffer against anti-ship missiles (AShMs), and Kevlar spall liners. Arleigh Burke destroyers are equipped with AN/SLQ-32 electronic warfare (EW) suites that provide electronic support . Vessels with the SLQ-32(V)3, SLQ-32(V)6, or SLQ-32(V)7 variant can jam radars. The destroyers have Mark 36 infrared and chaff decoy launchers, as well as Nulka decoy launchers, for spoofing incoming AShMs. For defeating incoming torpedoes,

2145-521: 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 22 feet (6.7 m) had been proposed for CG(X), while the DDG 51 Flight III design could carry an AMDR with a mid-diameter of only 14 feet (4.3 m). The Government Accountability Office (GAO) found that

2210-508: The MH-60 to monitor submarines and surface ships, launch torpedoes and missiles against them, and provide fire support during insertions/ extractions with machine guns and Hellfire anti-armor guided missiles. The helicopters also serve in a utility role, able to perform vertical replenishment , search and rescue , medical evacuation , communications relay, and naval gunfire spotting and controlling. In March 2022, an Arleigh Burke destroyer

2275-506: 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. DDG-116 to DDG-124 and DDG-127 will be "Technology Insertion" ships with elements of Flight III. For example, USS  Delbert D. Black  (DDG-119) and onwards have

2340-612: The SM-2ER Block IV. An expansion of fuel capacity slightly increased the displacement. The Flight IIA design was first procured in FY1994. Among the additions are two hangars and support facilities for ASW helicopters, Cooperative Engagement Capability (CEC), the Kingfisher mine detection system, and five blast-resistant bulkheads . To accommodate the hangars, the length was increased to 509.5 ft (155.3 m), and

2405-484: The SPY-6(V)4, Aegis Baseline 10, and cooling system upgrades during a later depot modernization period. Starting in 2025, the Navy will replace Phalanx CIWS on the destroyers with RIM-116 Rolling Airframe Missile (RAM) launchers to improve their point defense capability. Arleigh Burke s with the latest Aegis baselines will receive the 21-cell Mk 49 RAM launcher; Arleigh Burke s with older Aegis software will receive

2470-591: 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 Columbia -class submarines , with the air defense commander role retained on one cruiser per carrier strike group . In April 2022,

2535-480: 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

2600-505: The ability of crew to accomplish tasks and maintain alertness and will obviously distress passengers. An important metric in evaluating sea sickness is the motion sickness incidence (MSI). The most important study on MSI was published in Aerospace Medicine by O'Hanlon and McCauley in 1974, which established common subjective thresholds of MSI tolerance. MSI is measured in percentage of people who experience sea sickness during

2665-407: The aging Charles F. Adams destroyers. 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

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2730-508: The angled (rather than traditional vertical) surfaces and the raked tripod mainmast, which make the ship more difficult to detect by radar. Its designers incorporated lessons from the Ticonderoga -class cruiser , which the Navy deemed too expensive to continue building and difficult to upgrade further. For these destroyers, the U.S. Navy returned to all-steel construction, except the mast made of aluminum. The Ticonderoga s had combined

2795-567: The class has two AN/SLQ-25 Nixie towed countermeasures. The ships' Prairie-Maskers can reduce their radiated noise. A collective protection system makes the Arleigh Burke class the first U.S. warships designed with an air-filtration system against nuclear, biological, and chemical warfare (NBC). Other NBC defenses include double air-locked hatches, pressurized compartments, and an external countermeasure washdown system. The class's electronics are hardened against electromagnetic pulses . Fire suppression equipment includes water sprinklers in

2860-610: The class was introduced in FY1992. The incorporation of the AN/SRS-1A(V) Combat Direction Finding enhanced detection of signals. 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

2925-472: 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 50-foot shorter hull than the Ticonderoga 's. The designers were forced to make compromises, such as a wide flaring bow. To compensate for the limited length,

2990-465: The design of a vessel. Ship motions are considered when determining the principal dimensions of the ship and in developing the general arrangements of the ship's internal spaces. For example, in most vessels the far forward parts of the ship experience the worst ship motions and are commonly unacceptable for berthing passengers or crew. In exceptional cases where ship motions pose a threat to crew, structure or machinery, or when ship motions interfere with

3055-680: 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. Seakeeping In 1976, St. Denis suggested four principal terms needed to describe a seakeeping performance. These are: A drillship and a ferry have different missions and operate in different environments. The performance criteria will be different as well. Both may be considered seaworthy, although for different reasons based on different criteria. In ship design it

3120-409: The destroyers remain effective with service lives of at least 35 years. Modernization of existing ships provides commonality with in-production ships. The program's goals are reduced manning, increased mission effectiveness, and reduced total cost. Mid-life modernization of Flight I and II ships is done in two phases: the first phase updates the hull, mechanical, and electrical (HM&E) systems, while

3185-680: The development of the Tomahawk Block V, all existing Block IV Tomahawks carried will be converted to the Block V. The Tomahawk Block Va version is called the Maritime Strike version, and it provides anti-ship capability in addition to its land attack role. The Block Vb version features the Joint Multi-Effects Warhead System for hitting a wider variety of land targets. Arleigh Burke -class ships have

3250-535: The first ship was $ 1.1 billion, the other $ 778 million being for the ship's weapons systems. USS Arleigh Burke was laid down by the Bath Iron Works at Bath, Maine , on 6 December 1988, and launched on 16 September 1989 by Mrs. Arleigh Burke. The Admiral himself was present at her commissioning ceremony on 4 July 1991, held on the waterfront in downtown Norfolk, Virginia . Orders for Flight I ships continued through 1995. The Flight II iteration of

3315-556: The forward Phalanx CIWS. Flight IIA ships were initially built without the AN/SQR-19 TACTAS, though later units were subsequently installed with TACTAS. Starting with USS  Winston S. Churchill  (DDG-81) , the longer 5-inch/62-caliber (127 mm) Mark 45 Mod 4 gun was installed. Later Flight IIA ships starting with USS  Mason  (DDG-87) use the BridgeMaster E as their navigation radar instead of

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3380-481: The full $ 270 million Baseline 9 upgrade. Deputy of surface warfare Dave McFarland said that this change was due to the budget cuts in the Budget Control Act of 2011 . In 2016, the Navy announced it would begin outfitting 34 Flight IIA Arleigh Burke s 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

3445-572: The largest destroyers built in the United States; only the Spruance , Kidd (563 ft or 172 m), and Zumwalt classes (600 ft or 180 m) are longer. The Arleigh Burke class was designed with a new large, water-plane area-hull form characterized by a wide flaring bow, which significantly improves seakeeping ability and permits high speed in high sea states . The class's design incorporates stealth techniques , such as

3510-491: 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

3575-457: The living quarters and combat information center (CIC). The CIC is below the waterline. The Arleigh Burke class are multi-mission ships with numerous combat systems, including anti-aircraft missiles, land attack missiles, ship-to-ship missiles, and an anti-submarine warfare (ASW) system. Missiles are stored in and fired from Mark 41 Vertical Launching System (VLS) cells; with 90 cells on Flights I–II and 96 cells starting with Flight IIA,

3640-615: 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

3705-459: The originally-planned 80,000 shaft horsepower (shp) LM2500 gas turbines were upgraded to 100,000 shp. No main gun was included in the original design, later amended to include an OTO Melara 76 mm , before finally selecting the 5-inch/54-caliber Mark 45. Despite their constraints, the designers benefitted from insight gained from previous classes; for example, they chose an all-steel superstructure to improve survivability. The total cost of

3770-444: The planned Evolved SeaSparrow Missile; the Navy had initially decided that ESSM made Phalanx redundant. However, the Navy later changed its mind and decided to retrofit all IIA ships to carry at least one Phalanx CIWS by 2013. DDGs 91–96 (USS Pinckney , USS  Momsen , USS  Chung-Hoon , USS  Nitze , USS  James E. Williams , and USS  Bainbridge ) were built with superstructure differences to accommodate

3835-538: The rear-facing SPY-1D arrays are mounted one deck (eight feet) higher to prevent a blind spot. Flight IIA replaced retractable missile loading cranes on the forward and aft VLS with a total of six additional cells. The propellers are of a different design to reduce cavitation . New fiber optics improved bandwidth and helped reduce weight gain. Systems removed from Flight IIA include the Harpoon missile launchers and, starting with USS  McCampbell  (DDG-85) ,

3900-711: The second phase focuses on Aegis Combat System upgrades and introduces an Open Architecture Computing Environment (OACE). By 2017, modernization technologies were introduced to production ships, and the Navy started modernization of Flight IIA ships through a single process combining both phases of upgrading. 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 July 2010, BAE Systems announced it had been awarded

3965-587: The ship can fire Mark 46 , Mark 50 , or Mark 54 lightweight torpedoes for short-range ASW. The ships can detect anti-ship mines at a range of about 1,400 meters. All ships of the class are fitted with at least one Phalanx close-in weapon system (CIWS), which provides point defense against air and surface threats. Eight ships ( DDG 51 , DDG 64 , DDG 71 , DDG 75 , DDG 78 , DDG 80 , DDG 84 , DDG 117 ) are equipped with one SeaRAM CIWS for improved self-defense. Arleigh Burke s can also carry two 25 mm Mk 38 machine gun systems , one on each side of

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4030-685: The ship, designed to counter fast surface craft. There are numerous mounts for crew-served weapons like the M2 Browning . Located on the forward deck is the 5-inch (127 mm) Mark 45 gun . Directed by the Mark 34 Gun Weapon System , it can be used in anti-ship, anti-air, and naval gunfire support (NGFS) roles. It can fire 16–20 rounds per minute and has a range of 13 nautical miles (24 km). Arleigh Burke s can stow 680 5-inch rounds. As of 2023, six destroyers ( DDG 100 , DDG 104 , DDG 105 , DDG 106 , DDG 111 , DDG 113 ) are equipped with

4095-508: Was deployed with an AAI Aerosonde unmanned aerial vehicle (UAV). The aircraft is under demonstration for Flight I and II ships, which do not have accommodations for permanently storing helicopters. The Aerosonde has a small enough footprint to be stowed on those destroyers. It can perform missions such as intelligence, surveillance, and reconnaissance at a much lower cost than manned helicopters. The Chief of Naval Operations (CNO) from 1970 to 1974, Admiral Elmo Zumwalt , sought to improve

4160-761: Was expected to begin at-sea testing of the HELIOS in FY2023. 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

4225-569: Was to be attached to the main reduction gear to turn the drive shaft and propel the ship at speeds under 13 knots (24 km/h), 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 USS  Truxtun  (DDG-103) to test the technology, but upgrades of further destroyers would be halted due to changed budget priorities. Also in 2016, four destroyers of

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