As of my last update in October 2023, Russia has approximately 11 operational nuclear-powered submarines. This number includes several classes, such as the Borei and Delta IV submarines, which are capable of carrying ballistic missiles. The exact number may vary due to ongoing developments and maintenance in the Russian Navy.
The US, Russia, Great Britain, France, China and (recently) India have nuclear submarines.
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From Wikipedia: Today, six countries deploy some form of nuclear-powered strategic submarines: the United States, Russia, France, the United Kingdom, People's Republic of China, and India Several other countries, including Argentina and Brazil, have ongoing projects in different phases to build nuclear-powered submarines.
As of end of 2010, the Russian Navy included 12 strategic submarines of four different types. The submarines can carry 160 sea-launched ballistic missiles (SLBMs) that can carry 576 nuclear warheads.
The PLA navy has more than 225,000 personnel and is thought to have as many as 70 submarines, 10 of them nuclear-powered
Russian submarines are primarily built at several key shipyards, with the most notable being the Sevmash shipyard located in Severodvinsk, which specializes in nuclear submarines. Other significant facilities include the Admiralty Shipyards in St. Petersburg, known for conventional submarines, and the Rubin Design Bureau, which designs many of Russia's submarines. These shipyards play a crucial role in maintaining and expanding Russia's naval capabilities.
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170
USA has the most nuclear submarines
nearly 155
Argentina had diesel-electric submarines while the British had nuclear-powered submarines.
1, 200,000 Soldiers 30 Warships 11 Submarines.