Fury (1923)

Captain Leyton treats his son, Boy, harshly to eliminate every weakness, but he is so overjoyed at Boy's courageous defense of the character of his sweetheart, Minnie, that he has a heart attack. Before he dies, Leyton charges Boy with avenging his mother's desertion of his father for another man. Boy finds his mother; discovers the other man to be Leyton's first mate, Morgan; hurls Morgan overboard; and returns to marry Minnie.