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on video How does a Submarine work?

The oceans are most turbulent where wind meets water: on their surface. The waves racing across the sea are a sign of energy, originally transmitted by the sun and transformed into winds, racing from one side of the planet to the other. Ships battle and stagger through rough seas where no fish - worth its salt - ever swims. Sailing ships take advantage of the wind, harnessing the gusts of wind to create a very efficient means of propulsion. Diesel ships stay on the surface for a different reason: their engines need a steady supply of oxygen to burn fuel. In theory, it should be easier for ships to swim below the waves where the water is calmer and there is less resistance; In practice, this creates a different set of problems.


If you have ever gone snorkeling or snorkeling, you will know that life underwater is very different from life on the surface. It's dark and hard to see, there's no air to breathe, and the extreme water pressure makes everything feel uncomfortable and claustrophobic. Submarines are pieces of ingenious engineering designed to transport people safely through this extremely harsh environment. Although they were originally invented as military machines, and most large submarines are still built for the world's navies, a few smaller submarines serve as scientific research vessels. Most of these submarines (generally small, non-motorized, one- or two-person submarines, moored to scientific research vessels while they are in operation).





 

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