A 102-year-old letter from the chief engineer of Titanic to his son has revealed that the doomed ship almost crashed as it left Southampton, which would have changed the course of history.

From: http://www.dailymail.co.uk/news/article-2798241/was-titanic-nearly-saved-previously-unseen-letter-chief-engineer-reveals-ship-narrowly-avoided-collision-southampton-delayed-fatal-voyage.html