Until recently, China lacked a reliable nuclear second-strike capability. Its ballistic missile submarines, which can deliver a nuclear weapon, are changing that. Now, the United States is pursuing these subs in a cat-and-mouse contest reminiscent of the Cold War.
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Satellite imagery reveals the regular presence of nuclear-powered ballistic missile submarines at the strategic base near the resort city of Sanya. Specialized surface warships and aircraft designed to protect the subs are prowling key waterways off the coast. Facilities at the base appear to have been built to store and load ballistic missiles. Antenna arrays that support the hunt for foreign submarines have appeared on Chinese-held islands in the hotly contested South China Sea. And a veteran submariner has been appointed to command Chinese forces in the south of the country.
Taken together, this means China has a force of missile submarines that can launch nuclear attacks from beneath the waves and now appear to be heading out on patrols, according to serving and retired naval officers, diplomats and security analysts. That gives Beijing something it has until recently lacked: a more reliable “second strike” capability if its land-based nuclear arsenal comes under attack.
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After six decades of battling to master complex and challenging subsea military technologies, China has joined the United States, Russia, the United Kingdom and France in the nuclear ballistic missile submarine club. In its most explicit assessment so far of this Chinese capability, the Pentagon in its latest annual report on China’s military, published in August, said that Beijing now has a “credible” and “viable” sea-based nuclear deterrent.
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Each of China’s four Jin-class submarines is armed with up to 12 ballistic missiles that can carry a nuclear warhead with an estimated range of 7,200 kilometers (about 4,500 miles), according to the Pentagon. That would put the United States within striking distance from the Western Pacific. Analysts at the Washington-based Center for Strategic and International Studies estimate these missiles could fly at least 8,000 kilometers. The U.S. believes China has up to 100 nuclear missiles based on land.
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"An armed Jin-class SSBN will give China an important strategic capability that must be countered,” Admiral Harry Harris, then head of the U.S. Pacific Command, told a congressional committee last year.
That response appears to be happening. The United States and its allies are expanding their anti-submarine naval deployments across East Asia. This includes stepped-up patrols of America’s advanced, sub-hunting P-8 Poseidon planes out of Singapore and Japan.
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As it strengthens and improves its nuclear arsenal, Beijing is the only major nuclear power to be adding warheads to its stockpiles. China is developing an air-launched ballistic missile and plans to build a long-range stealth bomber capable of carrying nuclear weapons. With the sea-based second-strike deterrent in place, those programs suggest Beijing eventually intends to field a triad of air, sea and land-based nuclear weapons like the United States and Russia.
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Commercial satellite images of the submarine base give insight into the furtive force stationed there. They appear to show missile submarines regularly tied up alongside long piers in the harbor. Satellite images from Google Earth in June last year show what appear to be three Jin-class missile submarines at the base.
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