Due to the popularity of the film”Titanic”, almost everyone knows this tragic shipwreck. As one of the largest cruise ships in the world at that time, the Titanic, as the United States, cost as much as $7million at that time. No one believes that such an expensive luxury cruise ship will sink. When driving on the cold sea that night, it accidentally hit an iceberg, and finally the cruise ship sank. About 1500 people lost their lives in the accident.