The story describes a world in which a series of wars has depleted the reserves of oil and other minerals, which has led to the impossibility of creating ballistic missiles. Now the war is waged with the use of heavy artillery. This video shows a model of the artillery submarine of the Airbash empire. The hull of a nuclear submarine is a huge barrel through which 50 megaton ballistic projectiles are fired. The episode shows the surfacing of a submarine. When there is a full video, there will be an addition with another model.