Excluding Russia, these nations have 132 nuclear submarines containing the same number of reactors. In addition, there are 52 nuclear submarines with a total of 101 reactors which have been retired from service, but that still contain their nuclear fuel. All five of the countries that already possess nuclear submarines are continuing to develop and build new vessels. In the United States, there are nine nuclear submarines and two aircraft carriers being built. Great Britain is building seven nuclear submarines, while France is developing four nuclear submarines and a new aircraft carrier.
China plans to build two entirely new classes of nuclear submarines.
India also has plans to build nuclear powered submarines and has entered into a cooperative venture with Russia to develop the reactors for the new class of submarines. India will thereby become the sixth of the world's nations to be in possession of nuclear submarines. The Murmansk Shipping Company has eight nuclear icebreakers and a nuclear powered container ship from its base in Murmansk on the Kola Peninsula. Between the nine vessels, there are a total of 15 nuclear reactors. Hence the Kola Peninsula along with Severodvinsk on the White Sea, has the greatest concentration of nuclear reactors in the world.