The name Titanic became synonymous with disaster after the ocean liner sank on its maiden voyage in 1912, causing more than 1,500 people to die. However, that tragedy is far from the world's worst maritime disaster, in terms of loss of life. History's deadliest shipwreck occurred in 1945, when some 9,000 people perished after a German vessel, the Wilhelm Gustloff, was torpedoed by a Soviet submarine in the Baltic Sea. Find out more about the sinking of the Wilhelm Gustloff, and four other other major shipwrecks you might not know about.