REDOCTOBER

Red October

Red October is a fictitious modified Typhoon class submarine in the Tom Clancy novel The Hunt for Red October and the film that followed. She was built with a revolutionary stealth propulsion system called a "caterpillar drive", which is described as a pump-jet system in the book. In the film however, it is shown as being a magnetohydrodynamic drive.

The above text is a snippet from Wikipedia: Red October (submarine)
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