The Titanic was supposed to be an unsinkable ship, so what happened? After years of searching the ocean floor, a team of scientists found the wreckage of a ship that was supposed to be unsinkable. This massive vessel was the Titanic, which sank in 1912 after hitting an iceberg and became one of the most famous ships in history. For decades people have developed many theories suggesting other reasons for why the ship sank. Learn about the final days of the Titanic, the theories of why it sank, and the expedition and technology that led to the discovery of the remains.