On Sunday 14 April 1912, the Titanic was just four days into its first voyage when it struck an iceberg. But how long did it take for the ocean liner to sink? 11.40pm - Titanic hits iceberg Within minutes of hitting the iceberg the boat begins to take on thousands of tonnes of sea water through holes in its hull. The man that designed the ship, Thomas Andrews, is on board and goes to look at the damage. He tells the captain that the ship is going to sink. 12.30am, 15 April 1912 - Lifeboats are l