An estimated 100,000 people gathered at the dock in Belfast, Ireland on March 31, 1911, to watch the launch of the Royal Mail Ship (RMS) Titanic. Considered to be an “unsinkable” ship, Titanic was the largest and most luxurious cruise liner of its day, measuring more than 882 feet long from prow to stern—the length of four-city blocks—and 175 feet high, and weighing more than 46,000 tons. It boasted state-of-the-art technology, including a sophisticated electrical control panel, four elevators and an advanced wireless communications system that could transmit Morse Code. Yet on the night of April 14, 1912, just four days after leaving Southampton, England on its maiden voyage to New York, the Titanic struck an iceberg off the coast of Newfoundland and sank. Now, more than a century after the Titanic went down, experts are still debating possible causes of this historic disaster that took the lives of more than 1,500 passengers and crew. Most of them agree that only a combination of circumstances can fully explain what doomed the supposedly unsinkable ship.