There was a book called either Wreck of the Titan or Futility (It had 2 names) where a large ship that was incredibly similar to the Titanic hits an iceberg and sinks. The ships had similar water displacement, side, speed, and capacity, and both carried many wealthy passengers. The ships also were both described to be "unsinkable". The thing is, the book was released in 1898. That's 14 years before the sinking of the Titanic.