Supercavitating Torpedoes: Russia and Iran Have Them (The U.S. Navy Doesn’t)

Two of America’s primary foes, Russia and Iran, possess a supercavitating torpedo. Germany and the U.S. round out the list as the only other countries known to operate these novel weapons. As the name suggests, a supercavitating torpedo uses supercavitation to move through the water at higher velocitie...