How a submarine works and training (ww2 in german)
A video that explains how works a submarine using a nice transparent model .:hmm:
http://hk.youtube.com/watch?v=r6LNg-...eature=related
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But this ship can't sink!...
She is made of iron, sir. I assure you, she can. and she will. It is a mathematical certainty.
Strength and honor
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