The Titanic was the largest ship ever built at the time of its construction. The Titanic was deemed unsinkable due to its turn-of-the-century design and technology. According to her designers, even in the worst-case scenario of two ships colliding at sea, the Titanic would remain afloat for two to three days, giving time for nearby ships to aid.
However, on April 14, 1912, the Titanic collided with a massive iceberg and sank in less than three hours. The largest ship ever built sank in a fraction of the time estimated for her worst possible sea accident after what appeared to be a minor collision with an iceberg.