3. Introduction. For centuries, people have been interested in creating a craft, that could take a human passenger underwater safely. From diving bells to nuclear submarines with ballistic missiles, history has an interesting tale to tell of the expeditions under the sea. The main idea of a submarine is to go under water, and how it does that is not without an interesting tale of it’s own. Ballast tanks take in water, and that forces it to go under. When resurfacing is needed, they will simply release the water. That is what later subs did. The first one, the Turtle, couldn’t resurface. Early subs, used mostly mines, but some, like the CSS Hunley, had a rammer with a torpedo on the end.

4. Famous early subs! The Turtle Various mines and charges A British barge and the HMS Cerberus The British captured it, and when trying to transport it, it sunk. Operated by the Thirteen Colonies. First sub to be documented as a ship of war. Powered by the pilot, David Bushnell. Picture ArmamentVictims Fate Notes Navy

5. Picture ArmamentVictims Fate Notes Navy USS Alligator Two limpet mines. None, but they blew up a bridge during the Civil War, allowing gunboats to pass. Due to bad weather, they let the ocean sink it. This was the first sub for the US Navy, because when the Turtle was used, there was no real US Navy. US Navy.

6. Picture ArmamentVictims Fate Notes Navy CSS Hunley A rammer, with a torpedo on the end. USS Housatonic, and five of her sailors. Unknown how they sunk, maybe they ran out of air. The Hunley killed more of her men than of the enemy, 13 vs 5. How- ever, it did beat it’s pur- pose. The Rebel Navy

7. Nuclear Sub disasters Loss of USS Thresher The nuclear submarine was doing training trials, but water froze in the ballast tanks, forcing it to go deeper and deeper. The last very garbled message said they might have gone down 1,700 feet below their lowest depth before it sunk. No one escaped. Loss of USS Scorpion Another nuclear submarine, which disappeared in the Bermuda Triangle. With very high tech equipment, and 99 out of 99 of her crew. Loss of the Kursk This Russian Nuclear sub sunk, after two explosions, and 118 of her crew died. This happened in 2000, during a drill.