China's Nuclear Carrier Ambitions Take Shape as Reactor Research and Shipyard Activity Draw Scrutiny

A naval reactor project brings China's ambitions into focus

At a mountain site outside Leshan in China's southwestern Sichuan province, researchers have identified a prototype nuclear reactor intended for a large surface warship. Farther northeast, satellite images of the Dalian shipyard show structures that analysts associate with a possible new aircraft carrier. Together, those developments have sharpened the debate over whether China is preparing to join the United States and France in operating aircraft carriers powered by nuclear reactors.

As of January 20, 2026, the central uncertainty is timing: no date has been established for building or putting a Chinese nuclear carrier into service. Analysts also disagree over whether China's next carrier will use nuclear propulsion or refine the conventional design of its newest ship, the Fujian.

The Fujian, commissioned in November, is an 80,000-tonne vessel described as the world's largest conventional warship. It is also the first ship outside the United States equipped with electromagnetic catapults, which use magnetic force to launch aircraft. Its air wing can include fifth-generation stealth fighters, surveillance aircraft and drones.

The Shipborne Weapons Defence Review argues that the Fujian has design limitations that point toward nuclear propulsion for future carriers. The larger debate extends beyond engineering: China must decide how much to spend on ships capable of operating far from home, while developing the crews, maintenance facilities and supply arrangements needed to support them.

The United States operates 11 nuclear aircraft carriers. China has three carriers, and a Pentagon assessment says Beijing aims to field nine by 2035. Moving from three to nine would triple its carrier fleet, making the propulsion choice a major decision for its future navy.

What the Fujian changed

China's first two carriers, Liaoning and Shandong, followed Soviet designs and used ski jumps to launch aircraft. A ski jump is a curved ramp at the front of the flight deck that helps an aircraft become airborne as it accelerates off the ship.

The Fujian broke with that pattern as China's first indigenously designed carrier. Its electromagnetic launch system represents a major advance over the earlier ships and resembles the technology used aboard American Ford-class carriers.

Launch capacity is central to the comparison. The assessment of the Fujian's limitations describes two Chinese catapults against three aboard the most advanced American ships, allowing the American vessels to launch aircraft faster. The analysis of a possible future Chinese carrier discussed below uses a four-catapult American configuration as its benchmark.

Electromagnetic catapults attach to an aircraft's nose and rapidly propel it forward using large magnets rather than steam pistons. Their electricity demands are one reason analysts connect China's carrier development with its work on nuclear propulsion.

The Fujian can already carry a broader range of aircraft than China's earlier carriers. Once fully operational, its large air wing and launch equipment would allow it to project power across China's immediate surroundings, including areas central to Beijing's military planning.

Why nuclear propulsion appeals to Beijing

Nuclear carriers can operate for years without refueling their reactors, giving them effectively unlimited propulsion range and endurance. Conventional carriers burn fuel oil, which must be replenished during extended deployments. A reactor would allow a Chinese carrier to remain far from home for longer without frequent refueling of the ship itself.

Tong Zhao, a senior fellow at the Carnegie Endowment for International Peace, sees both strategic and symbolic value in that change. Nuclear carriers would place China alongside the United States and France in an exclusive group of naval powers, strengthening national prestige, domestic nationalism and its image as a leading global power.

Removing the need to store large quantities of propulsion fuel also frees space for aviation fuel and weapons. Aircraft would still need fuel, but the ship could carry more supplies for its air wing, extending its operational reach and combat capacity.

Nick Childs, senior fellow for naval forces and maritime security at the International Institute for Strategic Studies, says nuclear power would eventually give China more capacity to operate electromagnetic launchers, radars and new weapons technology. Collin Koh, of Singapore's Institute of Defense and Strategic Studies, similarly argues that reactors offer a stable, sustainable energy supply for frequent operations as China moves beyond the first island chain.

A shift from nearby waters to distant deployments

China's 2019 national defense white paper set out a change in the navy's responsibilities. It described the service as adjusting its strategic requirements by:

speeding up the transition of its tasks from defense on the near seas to protection missions on the far seas.

The U.S. Defense Department connects China's carrier expansion with its ability to protect ships operating beyond the reach of aircraft and defenses based on land. Its most recent report to Congress on Chinese military power stated:

China's growing force of aircraft carriers extend air defense coverage of deployed task groups beyond the range of land-based defenses, enabling operations farther from China's shore,

A carrier acts as a mobile airfield. Its aircraft can defend surrounding ships and conduct operations where land bases are too distant. Longer deployments would support China's growing emphasis on maritime operations and its demand for the navy to work farther from the mainland.

The first island chain, including Taiwan and disputed territories in the South China Sea, remains central to this strategy. Nuclear propulsion could also support deployments deeper into the Western Pacific and beyond, connecting China's regional objectives with its broader maritime ambitions.

Inside the Longwei reactor investigation

Researchers at the Middlebury Institute of International Studies in California concluded that China has built a land prototype reactor for a large surface warship. Their investigation combined satellite imagery with Chinese government documents and identified the Longwei, or Dragon Might, Project outside Leshan.

The prototype is housed at Base 909, a facility containing six other reactors in different states of operation. The site is controlled by the Nuclear Power Institute of China, a subsidiary of the China National Nuclear Corporation responsible for reactor engineering research and testing.

Jeffrey Lewis, a Middlebury professor involved in the investigation, described the Leshan prototype as the first solid evidence that China is developing a nuclear aircraft carrier. Operating such a vessel would mark another major step in the country's naval modernization.

The research drew on project tenders, personnel files, environmental impact studies and a citizen's complaint about construction noise and excessive dust. Procurement documents showed that the 701 Institute, formally the China Ship Research and Design Center, ordered reactor equipment for installation on a large surface warship under the Nuclear Power Development Project.

Contracts for steam generators and turbine pumps point to a pressurized water reactor with a secondary circuit. In that arrangement, heat from the reactor passes into another water circuit to produce steam that can drive machinery. The configuration is consistent with naval propulsion reactors. An environmental impact report described Longwei as a national defense construction project classified as secret.

What the dates and documents show

Satellite images covering 2020 to 2023 show homes being demolished and water intake infrastructure being built at the reactor site. Those changes indicate sustained construction, while procurement documents suggest the reactor is approaching operation.

Jamie Withorne, an analyst at the Oslo Nuclear Project who reviewed the findings, considered the argument convincing. Sarah Laderman, a senior analyst with Open Nuclear Network, described the investigation as carefully conducted and thoroughly researched, with a compelling case for a nuclear propulsion system intended for naval surface ships, probably aircraft carriers.

The main developments span several years:

• 2019: China's national defense white paper described a transition toward protection missions in distant seas.
• 2020 to 2023: Satellite imagery recorded demolition and water intake construction at the Leshan reactor site.
• November 2025: The Fujian entered service, bringing electromagnetic catapults into China's carrier fleet.
• January 20, 2026: Reactor research and Dalian shipyard activity were feeding debate over China's next carrier.
• 2035: The Pentagon assessment identifies this as China's target year for a fleet of nine aircraft carriers.

Some analysts suggest China could build two new carriers at the same time: another conventional Type 003 like the Fujian and a nuclear Type 004. That would allow continued expansion using a familiar design while pursuing a more demanding propulsion system.

Why Dalian's construction activity matters

Satellite images of the Dalian shipbuilding facility show an engineering prototype module containing two tracks or trenches. Five analysts assessed the structures as evidence of a new ship design unlike anything currently in China's fleet.

Michael Duitsman, a researcher at the James Martin Center for Nonproliferation Studies, said the tracks probably relate to testing equipment and layouts for the future Type 04 carrier. Analysts generally expect that design to have four catapults, matching the arrangement they identify aboard American carriers such as USS Gerald R. Ford.

The two visible tracks converge at an angle. Analysts connect that geometry with American supercarriers that have two parallel catapults at the bow and two along the waist, the side portion of the flight deck. Space limits mean the waist catapults converge rather than run parallel.

Accommodating four catapults would require a ship larger than the Fujian. Analysts expect a vessel approaching American carrier tonnage and powered by a nuclear reactor.

Seth Hosford, another James Martin Center researcher, explained that building prototype sections is warranted for complex electromagnetic systems. The two tracks in the Dalian module are close together, and he warned that intersecting electromagnetic catapults could create technical problems involving magnetic fields.

The Japan Institute for National Fundamentals also assessed satellite imagery as suggesting that construction of China's first nuclear carrier has probably begun at Dalian. It identified keel blocks extending more than 270 meters and internal frames measuring 16 meters high and 14 meters wide. The structures resemble those seen in American nuclear carriers under construction. Keel blocks support a ship while its hull is assembled.

The engineering leap is larger than changing engines

A nuclear carrier requires changes throughout the ship. Reactor installation affects weight, balance, internal arrangements, maintenance, crew training and supply needs. The transition is described as a greater technological challenge than China's earlier move from having no carriers to operating conventional ones.

The United States developed its nuclear carrier capability over decades, supported by extensive nuclear engineering knowledge and an established industrial base. Even with that experience, construction and maintenance have required enormous financial and logistical investment.

China has never built a nuclear surface warship. It operates submarines powered by reactors, but their designs remain a generation or more behind American and Russian submarines in noise reduction, reactor safety and operational reliability.

China's strong shipbuilding industry gives it substantial manufacturing capacity. A nuclear carrier, however, also requires suitable reactor engineering, integration of propulsion with the ship's other systems and personnel able to run and maintain those systems safely.

Matthew Funaiole, a senior fellow with the Center for Strategic and International Studies' China Power Project, doubts that China's next carrier will use nuclear propulsion. He expects the People's Liberation Army Navy's fourth carrier to improve the Fujian design through incremental changes.

Fuel savings do not replace a global support network

China's immediate military priorities remain in the Indo-Pacific, especially Taiwan, the South China Sea and the East China Sea. Conventional carriers may be adequate for those regional missions, making the case for nuclear propulsion less urgent than it would be for regular worldwide deployments.

A Chinese military observer speaking anonymously argued that a nuclear carrier would not be the most critical requirement for power projection beyond the Western Pacific. A carrier operates with other ships, and those escorts still consume fuel. Its aircraft also require frequent replenishment of aviation fuel.

China lacks the extensive regional logistical network available to the United States. The U.S. Navy can use allied territory to refuel ships and support overseas missions. A reactor would reduce one major fuel requirement, while leaving Beijing with the task of supplying the rest of the force.

Nuclear propulsion therefore changes how long the carrier itself can travel between refueling stops. Sustained operations also depend on supplies for aircraft, escorts, weapons, food, spare parts and maintenance. The logistical burden extends well beyond the carrier's engine room.

The cost and personnel demands

Ford-class carriers, their air wings and accompanying escorts cost enormous sums to build and operate, even for the United States. A Chinese nuclear supercarrier program could require investment reaching hundreds of billions of dollars.

China would make those decisions while facing slowing economic growth, demographic decline and financial instability. The issue is how much capability a nuclear carrier would deliver compared with other uses of the same resources.

Personnel requirements are another challenge. China operates 12 nuclear submarines, fewer than the United States and Russia, giving it a smaller base of experience for training crews to operate reactors aboard carriers.

Kitsch Liao, associate director of the Atlantic Council's Global China Hub, warned that expanding training pipelines could become difficult, especially if China simultaneously increases its nuclear submarine fleet. Both programs would need skilled personnel.

Some analysts favor greater investment in anti-ship ballistic missiles, submarines and cyberwarfare tools that complicate American operations, rather than matching the United States ship for ship. Their argument separates the prestige of a nuclear supercarrier from the military usefulness of alternative investments.

What longer deployments would mean around Japan and Taiwan

A nuclear carrier equipped with catapults could remain deployed in the Pacific longer than a conventional ship such as the Fujian. That endurance could support more sustained operations near Japan and across the first and second island chains.

Maki Nakagawa, a researcher at the Japan Institute for National Fundamentals, warned that commissioning a fourth carrier with nuclear propulsion could bring more persistent Chinese operations around Japan. Although China's carrier force still trails the United States, longer deployments would make surveillance and intelligence collection by Japan's Self-Defense Forces and the U.S. military more routine, requiring Japan to adjust its response.

Taiwan is another central concern. In a conflict, Chinese carriers could launch aircraft from the Philippine Sea east of the island, potentially deterring or hindering American intervention. Longer endurance would give commanders more flexibility to maintain a presence around strategic locations.

Zhao argues that nuclear carriers could extend Chinese operations deeper into the Western Pacific, further challenging American intervention in regional matters Beijing considers best resolved by countries in the region. Those deployments would complicate U.S. defense planning and calculations during a confrontation.

The Pentagon has expressed growing concern about China's rapid naval modernization, including carrier design and construction. Its report also described carrier deployments during Joint Sword exercises supporting simulated blockades of Taiwan. Alongside other Chinese ships and aircraft, the carriers challenged potential access by outside forces during a conflict.

Fleet size, industrial strength and the choices ahead

The United States retains a substantial carrier advantage. Its 11 nuclear carriers allow multiple strike groups to operate around the world, including the Indo-Pacific, while the Gerald R. Ford class represents its most advanced carrier technology.

China's fleet contains more than 370 ships and submarines, making it the world's largest navy by vessel count. Its shipyards build hundreds of vessels annually, compared with five or fewer in the United States, an industrial advantage that concerns American defense planners.

Vessel count captures only part of naval strength. A corvette weighing 1,400 tonnes and a Ford-class carrier weighing 100,000 tonnes each count as one ship, despite their very different capabilities. Tonnage and armament provide additional ways to compare the two navies.

The Pentagon's assessment that China aims for nine carriers by 2035 describes what would be the largest carrier expansion in the Indo-Pacific since World War II. Starting from three, that target would triple Beijing's ability to deploy carrier strike groups within the next decade.

Analysts considering China's options describe several possible routes. Beijing could refine its conventional fleet, operating three to six conventional supercarriers over the next decade to dominate regional waters. Alternatively, it could build a single experimental nuclear carrier in the 2030s and learn through operation, following the gradual approach the United States took with USS Enterprise in the 1960s.

Hypersonic missiles, drone swarms and advanced undersea weapons create another consideration: large surface ships face growing threats regardless of propulsion. Some analysts argue that China could gain more by improving weapons capable of sinking carriers than by building additional giant carriers itself.

One argument for the American response favors strategic patience and maritime restraint, conserving resources for affordable, resilient forces spread across more platforms rather than matching China carrier for carrier. China's nuclear carrier effort could become an expensive and risky prestige project, while successful development would expand its capacity for distant operations.

China's commitment to a navy capable of operating globally is among the major military developments of the 21st century. Reactor research, shipyard construction and the Fujian's arrival show the scale of that effort. Whether nuclear carriers become its centerpiece depends on engineering progress, operational needs, training and the resources Beijing commits.

The Bottom Line

• The Fujian entered service in November 2025 as an 80,000-tonne conventional carrier equipped with electromagnetic catapults.
• Researchers identified the Longwei prototype reactor at Base 909 outside Leshan as evidence of work toward nuclear propulsion for a large surface warship.
• Dalian satellite imagery suggests work on a larger carrier design, with analysts anticipating four catapults.
• Nuclear propulsion offers longer endurance and more space for aviation fuel and weapons, while escorts and aircraft still need fuel.
• China faces demanding reactor integration, maintenance, personnel training and financial requirements.
• Analysts disagree over whether the fourth carrier will be nuclear or an improved conventional design.
• The Pentagon assesses that China aims to expand from three carriers to nine by 2035.
• Longer Chinese deployments could increase pressure on Japan's surveillance operations and complicate American intervention around Taiwan.
• The United States operates 11 nuclear carriers, while China has the larger navy by vessel count and extensive shipbuilding capacity.
• Missiles, drones and undersea weapons remain part of the debate over the value of large carriers.