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The first submarines were powered by either hand or foot cranks, and were very ineffective.

After the invention of the internal combustion engine they were a diesel electric hybrid of sorts. They would use there diesel engines near the surface to propel themselves as well as charge there battery banks. These engines ran using a snorkel device to get air from the surface while still being concealed under water. This was used up until about the cold war era where they began switching to nuclear submarines.

These submarines, which are used today, run using a miniature nuclear reactor. That is why these submarines can stay underwater for months at a time. The nuclear eractor is cooled by pumping water through the sytem.

Personal submmarines today are usuallly powered by a large battery bank wich is charged every time you want to use it.

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16y ago

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