james cameron should of done his homework.........in the scene where the little boy is spinning the toy top on the deck of the ship was done before docking on the west coast of ireland. but in the film he is spinning his top after leaving the west coast of ireland heading towards new york. in history the top spinning was between cherbourg france and queenstown cobh, ireland. the photograph was taken by a priest just before getting off the titanic at queenstown ireland. ( this comment added the next day ).......> I think this film explains it very well why the titanic sank. calm sea's made it hard to detect icebergs because of no breaking water at the base.