U.S. Navy’s Next-Gen Destroyer: SASC Pushes DDG(X) and New Battleship
The U.S. Navy stands at one of the most consequential crossroads in its modern history. Congress is now pushing the service to simultaneously develop two entirely new classes of warships — a next-generation guided-missile destroyer and a vessel the Trump administration is calling a battleship — for the first time since World War II. The stakes couldn’t be higher, and the price tag is staggering.
The Senate Armed Services Committee (SASC) made its position clear in the FY27 National Defense Authorization Act: the Navy must continue pursuing the DDG(X) next-generation destroyer program in tandem with the newly proposed BBG(X), colloquially dubbed the “Trump-class battleship.” What’s driving this dual mandate, what would these ships actually do, and can the United States realistically build both at once? The answers reveal just how ambitious — and complicated — American naval modernization has become.
This isn’t just a story about ships. It’s a story about strategic priorities, congressional power, industrial capacity, and what the future of naval warfare might actually look like. From the limitations baked into today’s Arleigh Burke destroyers to the eyebrow-raising $13 billion price tag on a 21st-century “battleship,” the details are as fascinating as they are consequential.
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The DDG(X) Program: Why the Navy Needs a New Destroyer
The Problem With the Arleigh Burke — At Least the Older Ones
The Arleigh Burke-class guided-missile destroyer (DDG-51) has been the backbone of the U.S. surface fleet since USS Arleigh Burke commissioned in 1991. Over three decades and multiple upgrade “flights,” it has proven remarkably adaptable. But adaptability has limits.
The older Flight I and Flight II variants are now aging out of relevance. Flight I ships began joining the fleet more than 30 years ago, and they’re scheduled to start leaving service in the 2030s. The Navy needed a plan to replace them — and that plan is the DDG(X).
The more pressing technical concern, however, involves the newest Burke variant: the Flight III. While Flight III ships represent a significant leap in capability — most notably through the AN/SPY-6 Air and Missile Defense Radar — they’ve essentially exhausted the hull’s growth potential. Engineers describe the problem in terms of SWaP-C: Space, Weight, Power, and Cooling.
Modern and future weapons systems — directed energy weapons, hypersonic missile launchers, next-generation electronic warfare suites — demand enormous amounts of electrical power and generate tremendous heat. The Flight III hull simply doesn’t have the physical room or power-generation headroom to accommodate these systems at scale. You can’t add a megawatt-class laser to a ship that wasn’t designed to generate or cool that kind of power.
DDG(X): Built for the Technologies of Tomorrow
The DDG(X) program addresses SWaP-C limitations from the keel up. Rather than modifying an existing design, the Navy is developing an entirely new hull form — one engineered to support the power-hungry weapons and sensors of the 2030s, 2040s, and beyond.
Key design objectives include:
– Massively increased electrical generation capacity to power directed energy weapons and advanced radar systems
– A modular architecture allowing weapons and sensor upgrades without major structural work
– Advanced stealth characteristics baked into the hull design itself
– Next-generation combat management systems capable of integrating with unmanned platforms and multi-domain operations
– Hypersonic missile compatibility, with the internal volume and power to support future long-range strike weapons
The FY2026 budget included research and development funding for preliminary design work, and the SASC has explicitly stated it expects the Navy to stick to that timeline. This isn’t a program the committee is willing to let slide — particularly given the looming retirement of Flight I Burkes.
Congressional Research Service analyses confirm that DDG(X) is considered a critical priority for maintaining the Navy’s surface warfare edge against peer competitors, particularly China’s rapidly expanding PLAN surface fleet.
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The “Trump-Class Battleship” (BBG(X)): What Is a 21st-Century Battleship?
How This Idea Came to Be
The concept of building a new American battleship surfaced publicly when the Trump administration announced in December 2025 its intention to construct the first U.S. battleship since the 1940s. The announcement triggered immediate comparisons to the Iowa-class battleships of World War II — massive, gun-armed leviathans that projected raw firepower and national prestige.
But the BBG(X) wouldn’t fire 16-inch shells at enemy coastlines. It wouldn’t be armored in 12-inch steel plate. The name “battleship” carries enormous symbolic weight — and considerable political value — but the actual concept is something quite different from its historical namesake.
What BBG(X) Would Actually Be
Think of the BBG(X) as a floating magazine the size of a small aircraft carrier. The Navy’s FY2027 30-year shipbuilding plan categorizes it as a large surface combatant (LSC) — a new category altogether. The service has been explicit: BBG(X) “is not a destroyer replacement.”
What would a ship like this actually do? Based on available planning documents and defense analyst assessments, the BBG(X) concept centers on several mission sets:
– Mass strike capability: A ship large enough to carry hundreds of VLS (Vertical Launch System) cells, providing a deep magazine for land-attack and anti-ship missiles that no existing destroyer or cruiser can match
– Layered missile defense: The scale to host the most powerful air and missile defense radar and weapon systems, providing a hard-kill umbrella for an entire carrier strike group
– Command and control hub: Physical space and communications infrastructure to serve as a fleet command node
– Directed energy weapons: The power generation capacity to field high-powered lasers and railgun-type systems if and when they mature
– Power projection and deterrence: The raw symbolic and strategic mass that a vessel of this size communicates to adversaries
It’s less “battleship” in the WWII sense and more “arsenal ship with a very good publicist.” Defense analysts have compared the concept to proposals that circulated in the 1990s for a dedicated missile-launching platform — an idea that kept getting deferred due to cost.
The Numbers That Raise Eyebrows
Cost is where the BBG(X) concept runs headlong into reality. Current estimates peg the unit cost at $12.0 billion to $13.0 billion per ship. The Navy plans to submit its first BBG(X) procurement in the FY2028 budget, with the Pentagon’s fiscal outlook projecting $17 billion in procurement funding for that first hull alone.
For context, a Flight III Arleigh Burke costs roughly $2.3 billion. The Gerald R. Ford-class aircraft carriers cost approximately $13.3 billion each. The BBG(X), as currently scoped, would be priced comparably to a nuclear carrier — without the aviation wing.
That cost reality is precisely why SASC made the decision it did.
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SASC’s Dual Mandate: The Logic Behind Building Both
Why the Committee Said “Both”
The Senate Armed Services Committee’s position, as outlined in the FY27 NDAA markup, rests on straightforward logic: the BBG(X) is too expensive to serve as a one-for-one replacement for retiring Arleigh Burke destroyers.
The Navy currently operates approximately 90 Arleigh Burke-class ships. If even 40 of those eventually need replacing, building 40 BBG(X) hulls at $13 billion each would cost over half a trillion dollars in procurement alone. That math doesn’t work. DDG(X), as a destroyer-class replacement, needs to be procured in volume at a much lower unit cost.
The SASC’s reasoning is therefore this: BBG(X) fills a distinct capability niche — the large surface combatant role left vacant when the Navy retired its Ticonderoga-class cruisers and never replaced them — while DDG(X) handles the essential high-volume destroyer replacement mission. Neither program substitutes for the other.
The $1 Billion Withheld: Caution, Not Cancellation
Notably, the committee did not authorize the $1 billion in advance procurement funding the Navy requested for BBG(X) in the FY27 defense policy bill. This is a significant signal — not a cancellation, but a clear statement of skepticism about moving too fast on a program that carries enormous financial risk.
The committee wants design and concept work to proceed, but it isn’t prepared to cut a billion-dollar check for a ship whose design requirements aren’t yet fully defined. Given the Navy’s history of cost overruns on complex programs — the Zumwalt-class destroyers ballooned dramatically from initial projections — that caution is well-founded.
An Unprecedented Simultaneous Development Challenge
It’s difficult to overstate how unusual it is for the Navy to develop two entirely new major surface combatant classes simultaneously. Each program requires its own design teams, its own systems engineering workforce, its own test and evaluation infrastructure, and its own eventual shipyard capacity.
The U.S. shipbuilding industrial base is already under strain. The congressional mandate that all Navy ships be built in American shipyards under the Jones Act framework means a limited pool of yards capable of handling this scale of work. Bath Iron Works and Huntington Ingalls Industries are the two primary surface combatant builders — and both carry existing backlogs for submarines, carriers, and current-generation destroyers.
Critics argue that pursuing two such programs simultaneously risks diluting the design talent and industrial resources needed to do either one well. Proponents counter that the threat environment — a PLAN fleet that has added dozens of major surface combatants per year — demands ambition, not caution.
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Implications for the Future Fleet
Where These Ships Fit the Big Picture
The Navy has long articulated a desire for a 381-ship force-level goal. As of mid-2026, the fleet sits at roughly 296 battle force ships. Getting from here to there requires sustained shipbuilding at a pace that exceeds recent historical output.
DDG(X) and BBG(X) represent the top end of that construction ambition. Both programs are central to the Navy’s vision for competing with China in the Western Pacific — a theater defined by long ranges, anti-access/area-denial (A2/AD) environments, and the need for ships that can survive and strike in heavily contested airspace.
The DDG(X) would likely form the workhorse of carrier strike groups and surface action groups, providing distributed lethality across a large number of hulls. The BBG(X), by contrast, would serve as a power concentration node — a ship whose presence in a theater changes the strategic calculus for an adversary contemplating aggression.
The Risks Nobody Can Ignore
Military programs this complex and this expensive carry inherent risks. The history of Navy shipbuilding over the past two decades offers cautionary tales: the Littoral Combat Ship struggled with mission module development for years; the Zumwalt-class was truncated from 32 planned hulls to just 3 due to cost escalation; the Ford-class carrier faced serious delays with its advanced weapons elevator system.
Key risk areas for both programs include:
– Requirements creep: Adding capability requirements after design lock drives costs upward exponentially
– Technology readiness: Directed energy weapons and hypersonic integration are not yet mature; building ships around unproven systems has historically led to expensive retrofits
– Schedule compression: Congressional pressure to field ships quickly can push programs into production before designs are stable
– Budget competition: Both programs will compete internally for funds against submarine production, which many defense analysts consider the highest strategic priority
The workforce dimension is also real. Shipbuilding requires skilled welders, pipefitters, electrical workers, and engineers — a workforce that takes years to develop and has been shrinking relative to demand.
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FAQ: U.S. Navy DDG(X) and BBG(X) Programs
What is the DDG(X) program?
DDG(X) is the U.S. Navy’s next-generation guided-missile destroyer program, designed to replace aging Arleigh Burke Flight I destroyers beginning in the 2030s. It will feature a new hull form with substantially more power generation capacity to support future weapons and sensors that current destroyers cannot accommodate.
What is the Trump-class battleship (BBG(X))?
The BBG(X) is a proposed large surface combatant announced by the Trump administration in December 2025. Despite the “battleship” designation, it would function as an advanced guided-missile platform with massive vertical launch capacity, powerful air and missile defense systems, and potentially directed energy weapons — not the gun-armed steel giants of World War II.
Why is SASC pushing for both programs simultaneously?
The Senate Armed Services Committee argues that the BBG(X) is too expensive to replace Arleigh Burke destroyers on a one-for-one basis. The Navy needs DDG(X) as an affordable, high-volume destroyer replacement, while BBG(X) fills the large surface combatant niche left by retired Ticonderoga-class cruisers.
How much will the BBG(X) cost?
Current estimates put the unit cost at $12.0 billion to $13.0 billion per ship, with the Pentagon projecting $17 billion in procurement funding for the first hull in FY2028. The SASC declined to authorize $1 billion in FY27 advance procurement funding, signaling caution about the program’s pace.
When will these ships enter service?
The Navy is pursuing DDG(X) preliminary design with FY2026 R&D funding and intends to submit the first BBG(X) procurement request in FY2028. Given typical shipbuilding timelines, neither class would likely commission before the mid-to-late 2030s at the earliest.
Can U.S. shipyards handle building both programs?
This remains a serious concern. The American shipbuilding industrial base — centered primarily on Bath Iron Works and Huntington Ingalls Industries for surface combatants — already operates under significant backlogs. Simultaneously developing and eventually constructing two new major warship classes will require workforce expansion and potentially new facility investment.
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Conclusion: The High-Stakes Bet on American Naval Power
The U.S. Navy’s dual-track pursuit of DDG(X) and BBG(X) represents one of the most ambitious surface combatant development efforts in generations. The SASC has made its strategic judgment clear: America needs both a next-generation destroyer in sufficient numbers and a large surface combatant capable of concentrated firepower and advanced defense — and it needs to develop them at the same time.
The logic is defensible. The financial and industrial risks are real. A $13 billion “battleship” alongside a new destroyer class, competing for funding in a constrained defense budget, with a shipbuilding industrial base already stretched thin, is not a formula for smooth execution. History warns us that ambitious naval programs frequently cost more and take longer than projected.
What’s not in doubt is the strategic imperative driving all of it. China’s naval expansion is not slowing. The window for the United States to maintain surface fleet dominance is closing faster than many anticipated. Whether DDG(X) and BBG(X) deliver on their promise — or become cautionary tales of overreach — will shape American naval power for the next half-century.
For anyone tracking the future of military technology and global power, this is one of the most consequential stories unfolding right now. The ships haven’t been built yet, but the decisions being made in Congress and the Pentagon today will determine what sails the Pacific decades from now.