A nuclear submarine is a type of military vessel that uses nuclear power to operate underwater for long periods. Unlike traditional submarines that rely on diesel engines, these submarines can stay submerged for months without needing to surface. This capability allows them to conduct stealthy missions and gather intelligence while remaining hidden from enemy detection. Equipped with advanced technology, nuclear submarines can carry a variety of weapons, including ballistic missiles and torpedoes. They play a crucial role in national defense, providing a powerful deterrent against potential threats. Their ability to operate silently and efficiently makes them a vital asset for navies around the world.