Meet the First Submarine Used in Combat

The "Turtle" was the first submersible used in underwater combat. Even though it wasn’t completely successful, it did set the precedent for submersible combat. Subscribe to Science Channel: http://bit.ly/SubscribeScience #ImpossibleEngineering http://www.sciencechannel.com/tv-shows/impossible-engineering/ Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq