China’s Type 004, the world’s largest aircraft carrier, may be nuclear-powered; launch likely in 2027 | Details

The Type 004 is China's reported fourth aircraft carrier, now being built at Dalian Shipyard. It matters because it could be the country's first carrier powered by a nuclear reactor. That would represent a significant advance in China's naval technology and its effort to project military power overseas.

Satellite images show rapid construction since prefabricated hull sections appeared in early 2025. By October 2026, the ship measured about 322 metres long and 46 metres wide. Structures fitted inside the hull also appeared broadly consistent with spaces for containing a nuclear reactor.

The reactor's exact design and performance remain uncertain. In general, nuclear propulsion can support long operations without frequent refuelling, but the article does not provide technical performance figures. The carrier may launch as early as 2027, although its larger size and complex propulsion system could cause delays.

The Type 004 could be launched as early as 2027, according to estimates by US researchers. That timing could coincide with the People's Liberation Army's centenary on August 1. China has previously used major military milestones to showcase advances in defence capabilities, making the date symbolically important.

The main evidence comes from a CSIS assessment. It found that the Type 004 had reached a construction stage in May 2021 comparable to the Fujian's stage. The Fujian was launched in June 2022, roughly one year after that comparison point. This history suggests a 2027 launch is possible, not certain.

The timetable remains difficult to predict. The Type 004 is larger than the Fujian and may use a more sophisticated propulsion system. Unexpected construction problems could also slow work. Satellite imagery nevertheless shows rapid progress since hull sections first appeared in early 2025.

The completed Type 004 could become one of the world's largest aircraft carriers. Current estimates suggest it may exceed the roughly 333-metre length of the US Navy's Nimitz-class carriers. It could also approach or surpass the 337-metre Gerald R. Ford class, although its final dimensions remain uncertain.

Janes has separately estimated a final hull length of 336–339 metres. By October 2026, the developing vessel was already about 322 metres long and 46 metres wide. Its dimensions are expected to grow as construction advances on the bow and flight deck. The carrier is also expected to have a displacement approaching 110,000 tonnes.

This scale would place the Type 004 close to, or potentially beyond, the size of America's biggest carriers. A larger hull can provide more room for fuel, weapons, machinery, crew quarters and maintenance facilities. It can also support a bigger air wing and more simultaneous flight operations.

A nuclear reactor could give the Type 004 a powerful source of onboard energy and reduce dependence on conventional fuel during long deployments. That matters for a carrier intended to operate far from China's shores. The article indicates that hull structures resemble arrangements for containing a reactor, but it does not confirm the reactor's final design or capabilities.

The ship is also expected to use an electromagnetic aircraft launch system. Such a system uses controlled electromagnetic force instead of older launch methods. In general, it can provide more precise acceleration and may handle different aircraft weights more flexibly. The source confirms the planned system but does not provide launch rates or aircraft specifications.

Together, these systems could make the carrier more capable at sea. Nuclear propulsion may support sustained operations, while electromagnetic launching could improve flight-deck efficiency. The Type 004's larger size would add space for aviation fuel, weapons, maintenance, machinery and aircraft, but technical results remain uncertain.

A larger carrier gives China more room for aviation fuel, weapons, aircraft, maintenance facilities, crew quarters and machinery. Its expanded flight deck could support more aircraft and allow launch and recovery operations to happen simultaneously. These features could make each carrier more useful during sustained operations far from home.

The article links this capacity to China's broader fleet plans. A larger carrier fleet could broaden China's military options by allowing it to sustain carrier operations in the Indian Ocean and western Pacific. Several carriers could also support a more continuous presence than a small fleet, although the article does not specify deployment schedules.

China's 2025 fleet expansion goal is ambitious. The navy aims to add at least six carriers by 2035, potentially growing from three to nine vessels. Analysts say this would require a major increase in shipbuilding, including possibly constructing several carriers at the same time. More carriers would expand China's ability to project power overseas.

China's navy aims to add at least six aircraft carriers by 2035. The 2025 Pentagon report cited in the article said this could expand the fleet from three vessels to nine. Such growth would significantly increase the number of platforms available for training, deployment and sustained operations.

The target would require more than completing the Type 004. Analysts said China would need to ramp up shipbuilding considerably. That could mean constructing several aircraft carriers at the same time, demanding greater capacity at shipyards, supply networks and supporting industries. The article does not identify a detailed construction schedule.

If achieved, the larger fleet could broaden China's military options. It could help sustain carrier operations in both the western Pacific and Indian Ocean. The Pentagon described China's progress in carriers, sixth-generation fighters and nuclear weapons as historic, and said these developments were making the United States increasingly vulnerable.

An aircraft carrier is a large warship with a flight deck and facilities for operating military aircraft. It carries aircraft, fuel, weapons, crew and maintenance equipment at sea. This makes it a mobile airfield that can move with a naval force rather than remaining fixed on land.

Its key mechanism is the flight deck. Aircraft launch from and recover onto the ship, allowing the carrier to provide air operations in distant waters. The article highlights how a larger deck could support more aircraft and simultaneous launch and recovery operations. It also notes that carriers carry aviation fuel, weapons, maintenance facilities and machinery.

That mobility helps a country project military power far from its shores. China's planned fleet expansion illustrates the idea: analysts say a larger carrier force could sustain operations in the western Pacific and Indian Ocean. The Type 004 could strengthen that capability through its size, possible nuclear propulsion and electromagnetic launch system.