"CQD (come quick danger)...SOS (save our souls)...we have struck iceberg...sinking fast...Position 41.46 N. 50.14 W. CQD...SOS." This was the desperate message repeated by Titanic's Senior Marconi Wireless Operator to any ship that could hear it-many did-and come to their assistance in time. None could. Late on the night of April 14, 1912, in a remarkably perfect calm on the North Atlantic, the RMS Titanic collided with a massive iceberg and sank in less than three hours. As the story unfolded many questions demanded answers. How could the Titanic strike an iceberg in the perfectly calm...