Original: In 1912 , the upper-class 17-year-old Rose ( Kate Winslet ) boards the ship in Southampton , England with her fiancé Caledon '' Cal '' Hockley ( Billy Zane ) , the son of a Pittsburgh steel tycoon , and her mother , Ruth DeWitt Bukater ( Frances Fisher ) .
Simplified: In 1912 , 17-year-old society girl Rose DeWitt Bukater boards the ship 's first class suites with her fiance , steel magnate Caledon Hockley , and her mother , Ruth DeWitt Bukater , in Southampton .