Another me?

I think I got to see another me.

I was on a boat, like a ferry, and it was a nice day, and the top floor of the deckhouse was filled with people just wandering around. They were all different and in all different forms of dress and different ages and everything, just a collection of humanity over time and space. And for some reason the boat was sinking, but no one was worried about it except this one girl. I started talking to her and she was really upset that the boat was sinking. I asked her why she was so upset, and she said because she didn't want to drown. "That doesn't matter," I said "you're already dead anyway." She was shocked like this was a revalation to her...and that was where the dream ended.