Russia as manufactured the first Poseidon nuclear super torpedo ammunition for the Belgorod special-purpose nuclear submarine. As part of the tests, the crew of the Belgorod nuclear submarine of project 09852 conducted a series of tests of the Poseidon in order to check the launch system and the behavior of the submarine after launch at various depths. The nuclear power plant of the torpedoes was also tested. The Poseidon is the largest and heaviest torpedo in the world and is often used as an unmanned underwater system. With a diameter of around 2 meters and a length of 24 meters, it can dive to a depth of 1000 meters. The torpedo is equipped with a warhead with a capacity of up to 100 megatons, an explosion of such power can cause a tsunami up to 500 meters high. Some consider these torpedoes to be doomsday weapons.