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Beneath the waves lurks a stealthy war machine. Capable of carrying nuclear weapons, submarines play a key role in the defense of many countries around the world today. Rarely seen, they patrol the world’s oceans, their crew alert, ready to take their enemy by surprise.

The earliest beginnings of submarines can be traced back to the time of Alexander the Great in 323 B.C. In 1776 American inventor David Bushnell designed and constructed the first military submarine. They’ve come a long, long way since then!