diesel-electric submarine

A diesel-electric submarine is a vessel that uses diesel engines and electric batteries to operate underwater and on the surface. When on the surface or near the surface, it runs the diesel engines to recharge its batteries and power systems. When submerged, it switches to battery power, making it quieter and more discreet. This combination allows the submarine to stay underwater longer than traditional diesel-only designs, without relying solely on nuclear power. Diesel-electric submarines are widely used for defense and research because of their ability to remain hidden beneath the water’s surface.