Which country operates the largest nuclear submarine fleet?
As of January 2026
Representational Image. Photo: Collected
The United States remains the world's leading operator of nuclear submarines, including fast-attack, ballistic-missile, and guided-missile types. However, the most significant shift in the undersea balance of power is China's rapid expansion, which has recently seen it overtake Russia to become the world's second-largest operator of nuclear-powered submarines.
Infograph: Ashrafun Naher Ananna/TBS Creative
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