In an effort to produce the largest, fastest and most luxurious ship afloat, the British built the S.S. Titanic. It was so superior to anything else on the seas that it was dubbed ‘unsinkable’. So sure of this were the owners that they provided only twenty life boats and rafts, less than one-half the number needed for the 2,227 passengers on board. Many passengers were aboard the night it rammed an iceberg only two days at sea and more than halfway between England and its New-York destination. Because the luxury liner was travelling so fast, it was impossible to avoid the ghostly looking iceberg. An unextinguished fire also contributed to the ship’s submersion. Panic increased the number of casualties as people jumped into the icy water or fought to be among the few to board the life boats. Four hours after the mishap, another ship, the ‘Carpathia’, rescued 705 survivors.What is the main idea of the passage?