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in submarines •  7 years ago 

virginia_class_submarine_8.jpg

Some submarines can remain under the water for several months at a time.

submarines water months time under
7 years ago by

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      ·  7 years ago 

    Thanks for information I hope you follow me

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      1 vote
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        ·  7 years ago 

      Sub bro i have upvote you i hope u follow me :)

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          ·  7 years ago 

        How do they stay under water for several months at a time? It would seem that they would need some really cool systems and or need to store a lot of food and water.

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