Nuclear submarines are marvels of modern engineering, capable of operating for over 30 years without a single refueling stop. While it is a common myth that they carry only a few kilograms of fuel, they actually use highly enriched uranium—the same grade used in nuclear weapons—to achieve an incredible energy density. This specialized fuel allows the reactor to produce unlimited electricity, which the ship uses to desalinate seawater for drinking and split water molecules into oxygen for the cre