A manufacturing firm, ACME Whistles, has discovered it supplied whistles to the Titanic, discovering the connection during a scene where Kate Winslet's character Rose blows a whistle to attract rescuers. The company had supplied 30 whistles for use on the Titanic in 1912, which were used by officers to signal commands, co-ordinate lifeboats and maintain order during evacuation. The discovery was made as the world marks 114 years since the ship sank.