Daily Archives: April 11, 2010

Today is Submarine DAY!

Posted on April 11, 2010 by Heidi Richards Mooney

A submarine is a floating (powered) vessel designed for underwater operations that can also sail on the water’s surface. Aristotle described a submersible vessel used in 332 B.C. by the sailors of Alexander The Great. There is also evidence that a very primitive … Continue reading →

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