U.S. Navy Begins USS Thomas G. Kelley Arleigh Burke-class Flight III Destroyer for Indo-Pacific Deterrence.

Bath Iron Works has begun fabrication of the future USS Thomas G. Kelley (DDG 140), marking another step in the U.S. Navy’s effort to expand its Flight III Arleigh Burke-class destroyer fleet as demand grows for more capable air and missile defense warships. The ceremony, held at the shipyard’s Structural Fabrication Facility in Bath, Maine, also underscored the Navy’s focus on sustaining high-end surface combat power in contested maritime environments across the Indo-Pacific and other strategic theaters.

As the seventh Flight III destroyer to enter production at Bath Iron Works, DDG 140 will carry the AN/SPY-6 radar and upgraded combat systems designed to improve detection, tracking, and engagement against advanced missile and air threats. The continued expansion of the Flight III fleet strengthens the Navy’s ability to conduct integrated air defense, escort carrier strike groups, and maintain deterrence against near-peer naval competitors.

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DDG 140 is expected to operate the Aegis Baseline 10 combat system, which combines air defense, ballistic missile defense, and surface warfare functions within a unified architecture (Picture source: AI generated by Army Recognition)

BIW President Charles F. Krugh states during the ceremony that the shipyard continues adapting its industrial processes to meet the U.S. Navy’s growing requirements regarding production schedules, construction quality, and operational readiness. His remarks also draw a direct connection between the yard’s current mission and Kelley’s wartime leadership while commanding river assault craft under enemy fire in Vietnam. That continuity between operational heritage and industrial modernization remains central to the U.S. Navy’s messaging surrounding the destroyer program, particularly as maritime competition with China intensifies and high-end naval warfare scenarios return to strategic planning discussions.

The future USS Thomas G. Kelley belongs to the Flight III evolution of the Arleigh Burke-class program, a variant designed to strengthen the U.S. Navy’s integrated air and missile defense capabilities. Flight III destroyers primarily introduce the AN/SPY-6(V)1 Air and Missile Defense Radar (AMDR), developed around Active Electronically Scanned Array (AESA) technology using gallium nitride modules. Compared with the SPY-1D radar installed aboard earlier destroyers, the SPY-6 provides substantially greater detection and tracking capacity against multiple threats, including ballistic missiles, low-observable cruise missiles, and maneuvering targets operating in electronically contested environments. Bath Iron Works confirms on May 21, 2026, that DDG 140 becomes the seventh Flight III destroyer to begin construction at the company’s Maine facility.

Integrating the SPY-6 radar nevertheless requires major modifications throughout the ship itself. To support the higher electrical and thermal demands generated by the new system, Flight III destroyers receive a modernized electrical architecture and expanded cooling capacity. Despite these internal redesigns, the vessel’s overall hull dimensions remain close to previous Arleigh Burke variants, allowing the U.S. Navy to reduce industrial risk while preserving logistical continuity with ships already in service. The changes notably affect machinery spaces, power distribution networks, and combat-system integration areas in order to maintain future modernization margins over the vessel’s service life.

Like other Flight III destroyers, DDG 140 is expected to operate the Aegis Baseline 10 combat system, which combines air defense, ballistic missile defense, and surface warfare functions within a unified architecture. The ship will likely retain the standard 96-cell Mk 41 Vertical Launching System (VLS), capable of deploying several missile families, including the SM-2, SM-6, Tomahawk Land Attack Missile (TLAM), and RIM-162 Evolved Sea Sparrow Missile (ESSM). The SM-6 gives the destroyer especially valuable operational flexibility because the missile can engage aircraft, cruise missiles, certain terminal ballistic missile threats, and surface targets at ranges exceeding 200 nautical miles, depending on engagement profile and targeting support.

Anti-submarine warfare capabilities also remain central to the Flight III operational profile. The ships continue using the AN/SQQ-89(V)15 undersea warfare suite combined with hull-mounted sonar and towed-array sensors designed to detect submarines operating at extended distances. Embarked MH-60R Seahawk helicopters further extend detection and engagement range through the use of sonobuoys, lightweight torpedoes, and electro-optical sensors. At the same time, Link 16 and Cooperative Engagement Capability (CEC) tactical data links allow the destroyer to exchange targeting information in near real-time with U.S. and allied carrier strike groups, reducing sensor-to-shooter timelines during complex naval operations.

Operationally, Flight III destroyers are designed to protect carrier strike groups, amphibious formations, and strategic maritime traffic against layered aerial threats. Their radar architecture becomes particularly relevant in the Indo-Pacific theater, where U.S. planners increasingly prepare for scenarios involving coordinated salvos of ballistic missiles, supersonic anti-ship missiles, and unmanned systems. The SPY-6 radar improves early-warning timelines while maintaining track quality against low-signature or maneuvering threats at long range. Combined with Aegis Baseline 10 and SM-6 interceptors, Flight III destroyers therefore provide the U.S. Navy and allied forces with a broader integrated air and missile defense capability across contested maritime environments.

The start of fabrication for the future USS Thomas G. Kelley also reflects the industrial and geopolitical dimensions of current American maritime strategy. Washington continues relying heavily on Bath Iron Works and Huntington Ingalls Industries to sustain destroyer production while the future DDG(X) program remains under development. That industrial continuity directly supports evolving operational requirements facing the U.S. Navy across both the Indo-Pacific and the Middle East. In the Western Pacific, Arleigh Burke-class destroyers remain at the center of the American naval posture around Taiwan, the South China Sea, and freedom of navigation operations conducted near disputed maritime zones. Forward-deployed destroyers assigned to the U.S. 7th Fleet and based in Yokosuka, Japan, maintain a near-permanent presence throughout the region while providing rapid-response capabilities against Chinese naval expansion and long-range missile forces.

Current tensions involving Iran around the Strait of Hormuz also reinforce the operational relevance of the Arleigh Burke class. In recent months, U.S. destroyers have participated in maritime security and mine-countermeasure support operations following renewed tensions between Washington and Tehran. In a confined maritime environment where threats can emerge simultaneously from anti-ship missiles, drones, naval mines, and fast attack craft operated by the Islamic Revolutionary Guard Corps Navy, Arleigh Burke destroyers retain high strategic value because of their combination of Aegis-based air defense, electronic warfare systems, embarked helicopters, and network-centric command capabilities. Flight III variants equipped with the SPY-6 radar further improve the U.S. Navy’s ability to detect and react against saturation attacks or low-signature targets launched from coastal areas, an increasingly important requirement in both the Persian Gulf and the Red Sea. Across the Indo-Pacific, the Gulf region, and the North Atlantic, destroyers capable of simultaneously condu

Written By Erwan Halna du Fretay - Defense Analyst, Army Recognition Group
Erwan Halna du Fretay holds a Master’s degree in International Relations and has experience studying conflicts and global arms transfers. His research interests lie in security and strategic studies, particularly the dynamics of the defense industry, the evolution of military technologies, and the strategic transformation of armed forces.