Zumwalt-class destroyer

Zumwalt-class destroyer
National Museum of the U.S. Navy · Public domain · source
Name	Zumwalt-class destroyer
Caption	The lead ship, USS Zumwalt (DDG-1000), underway in 2015.
Builders	Bath Iron Works
Operators	United States Navy
Class before	Arleigh Burke-class destroyer
Built range	2009–present
In service range	2016–present
Planned	32 (original), 3 (final)
Type	Stealth guided-missile destroyer
Displacement	approx. 15,995 long tons (full load)
Length	610 ft (190 m)
Beam	80.7 ft (24.6 m)
Draft	27.6 ft (8.4 m)
Propulsion	Integrated electric propulsion, Rolls-Royce Marine Trent gas turbines
Speed	30.3 knots (56.1 km/h)
Sensors	AN/SPY-3 Multi-Function Radar, AN/SQQ-90 Sonar
Armament	Guns: 2 × Advanced Gun System (AGS), 2 × Mk 110 57 mm gun, VLS: 20 × Mk 57 Vertical Launching System cells (80 missiles), Aircraft: 2 × MH-60R Seahawk helicopters
Aircraft facilities	Enclosed hangar, flight deck

Zumwalt-class destroyer. The Zumwalt-class is a class of three United States Navy stealth guided-missile destroyers designed as multi-mission land-attack and surface warfare vessels. Conceived under the DD(X) program to replace older Spruance-class destroyers, the class represents a radical departure in naval design with its distinctive tumblehome hull, advanced automation, and integrated electric propulsion. Intended to operate as a key component of the Department of Defense's network-centric battle force, the program faced significant challenges, leading to a drastic reduction from an original fleet of 32 ships to just three completed vessels: USS Zumwalt (DDG-1000), USS Michael Monsoor (DDG-1001), and USS Lyndon B. Johnson (DDG-1002).

Design and development

The design lineage of the class originates from the SC-21 program and the subsequent DD(X) initiative, managed by the Department of the Navy and executed by a team led by Northrop Grumman and Raytheon. The primary goal was to create a next-generation surface combatant for the 21st century, emphasizing survivability, land attack, and littoral dominance. Key design decisions included the adoption of a wave-piercing tumblehome hull form, developed through extensive testing at the David Taylor Model Basin, to reduce radar cross-section and improve seakeeping. The program was overseen by the Naval Sea Systems Command (NAVSEA), with significant input from the Defense Advanced Research Projects Agency (DARPA) on integrated power systems and automation technologies.

Features and armament

The class's most prominent feature is its extensive use of stealth technology, including angled composite deckhouses and hidden sensors, giving it the radar signature of a small fishing boat. Its integrated power system, centered on Rolls-Royce Marine turbines, provides immense electrical capacity for future weapons like railguns and lasers. The primary offensive weapon was intended to be the twin 155mm Advanced Gun System (AGS), firing the Long-Range Land-Attack Projectile (LRLAP) for precise naval gunfire support. For missile defense, the ships are equipped with 80 launch cells in the Mk 57 Vertical Launching System, capable of firing a variety of missiles including the RIM-162 ESSM, RIM-174 Standard ERAM, and Tomahawk cruise missiles. Sensor suites are built around the AN/SPY-3 multi-function radar and the AN/SQQ-90 integrated undersea warfare system.

Construction and cost

Construction of all three ships was awarded to General Dynamics' Bath Iron Works shipyard in Maine. The lead ship, USS Zumwalt, was laid down in 2009, launched in 2013, and commissioned in 2016 in a ceremony at Baltimore. The program became one of the most expensive in modern naval history, with total acquisition costs for the three ships exceeding $22 billion. This staggering cost, driven by the ships' technological complexity and the shrinking of the class, rendered the specialized LRLAP ammunition prohibitively expensive, leading to its cancellation. Consequently, the AGS guns currently have no viable ammunition, a major operational limitation.

Service history

Following commissioning, USS Zumwalt was initially assigned to Surface Development Squadron One in San Diego for testing and development. The ship underwent a significant modernization period at Vigor Shipyards in Portland, Oregon, to integrate the Conventional Prompt Strike hypersonic missile system, replacing the inoperable AGS. USS Michael Monsoor was commissioned in 2019 and has participated in exercises like RIMPAC. The third ship, USS Lyndon B. Johnson, was commissioned in 2023. Their service has been marked by technical challenges, including propulsion system failures, but they serve as invaluable testbeds for technologies critical to the future U.S. Fleet, such as the Aegis Combat System Baseline 10 and integrated cyber warfare suites.

Future and legacy

The future role of the three Zumwalt-class ships is focused on surface strike, with the integration of the Common Hypersonic Glide Body as part of the Conventional Prompt Strike program. They are expected to operate as a unique squadron, providing a long-range precision strike capability for the Indo-Pacific Command. Despite its truncated production, the class's legacy is profound, pioneering technologies in stealth, automation, and electric propulsion that are directly informing the design of the U.S. Navy's next-generation warship, the DDG(X) program. Lessons learned from the Zumwalt program regarding cost control and requirements management continue to influence major acquisition programs within the Pentagon.

Category:Destroyer classes Category:Stealth ships Category:Ships of the United States Navy