Basic structural parts of the ship?

Here is a Summary of the movie Titanic. So a rich girl named Rose goes on titanic with her mother and finance who is also rich. Then a poor artistsaves her life after she almost fell off the back of the ship. Soon disaster strikes and don't leave Jack (the penniless artiest) side. They both go in the water which is about freezing and Jack dies and Rose says i will never let go and she then is saved but misses Jack. At the end of the movie she either dies or has a dream and sees jack and all those such as Mr.Andrew,Mr.Murdoch, The Captain, Cora and many more people. 1500 lives went in the sea that night and all are there at the ending. I think she dies because she sees all those who died that night.