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Global submarine production has reached the highest pace since the Cold War, with 77 launches since 2021. China leads in quantity, variety of projects, and industrial expansion, while traditional powers, new nuclear programs, technology transfer agreements, and export markets transform international naval strategy
The global submarine industry is experiencing the most active period since the Cold War. In the past five years, 16 countries have launched about 77 vessels, expanding military spending and capabilities for deterrence, intelligence, and maritime security.
China leads this expansion. Since 2021, the country has launched approximately 24 submarines, double that of Russia, with 12, and more than three times the total of the United States, with seven.
Submarine construction returns to the pace of the 1980s
The level of global production is approaching that observed in the 1980s. The difference is that now the construction is distributed among more countries, not just the traditional naval powers.
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Of the 77 submarines launched since 2021, 33 have nuclear propulsion. These vessels were built by China, Russia, the United States, the United Kingdom, France, and India, countries that concentrate this technology.
Other countries are advancing in this direction. Brazil and North Korea are building nuclear submarines, while South Korea and Australia plan nuclear fleets.
The expansion reflects a shift in naval strategy. Submarines have gained a role in deterrence, intelligence gathering, and maritime protection, stimulating markets and national programs.
China accelerates projects and expands variety of classes
The Chinese advantage is not limited to quantity. In the past five years, the country has added seven new classes of submarines to the fleet, a pace superior to that of competitors.
Russia launched only one new class, the Khabarovsk, whose construction took more than 11 years. The United States maintained the Virginia class program.
The speed does not necessarily mean that each Chinese vessel is more advanced. Even so, the ability to launch new concepts shows how the country’s submarine industry is rapidly changing.
China also leads the development of large unmanned underwater vehicles, known as XXLUUVs. They have dimensions similar to manned submarines, and no other country is known to build submersible drones of this size.
Another advancement involves air-independent propulsion with nuclear energy. The Type-041 Zhou class submarine uses a system described as a small nuclear power plant, technology called nuclear-AIP.
Three shipyards boost Chinese nuclear capacity
For years, the Huludao shipyard in northern China was solely responsible for building the country’s nuclear submarines. Now, Wuchang in Wuhan and the JN shipyard in Shanghai are also involved in production.
Wuchang is expected to build the Type-041 Zhou class. The Shanghai shipyard launched a larger nuclear attack submarine, belonging to a new class. Huludao launched an identical vessel into the water a few days later.
There is little information about this project, and its relation to the Type-095 program remains uncertain. With three active facilities, estimates indicate that China could launch about six nuclear submarines annually, three times the American target.
Exports open new international markets
The Chinese industry also works for foreign buyers. Recently, it built four Hangor class submarines for Pakistan, under an agreement that provides for shared production.
Germany and France remain important exporters, while Spain and South Korea emerge as new participants. Technology transfer agreements and local manufacturing also help countries develop their own capabilities.
The United States and the United Kingdom are expected to incorporate new classes in the future. Even so, the current pace of construction, technological diversification, and industrial expansion indicates that China is likely to remain the main force in global submarine production today.
How do you assess this new submarine race and China’s advancement in the face of traditional powers? Leave your opinion in the comments.
Also tell us if this expansion represents greater defense capability, increased international tensions, or an inevitable transformation of naval strategies.
