Nuclear submarines are advanced underwater vessels powered by nuclear reactors. This technology allows them to operate for long periods without needing to surface for fuel, making them ideal for stealthy military operations. They can travel at high speeds and remain submerged for months, which enhances their strategic capabilities. These submarines are equipped with various systems, including torpedoes and ballistic missiles, enabling them to carry out a range of missions. They play a crucial role in national defense, providing deterrence and surveillance while maintaining the ability to respond to threats from other nations.