Revealing mistake: When the purser's safe falls through the ceiling, the ceiling metal is far too thin. Bearing in mind also, that the on the other side of the ceiling metal is supposed to be the floor of the next deck up, and that too is a thin flimsy metal, that doesn't even appear that it could support any kind of weight.

Beyond the Poseidon Adventure (1979)
1 revealing mistake - chronological order
Directed by: Irwin Allen
Starring: Michael Caine, Sally Field, Peter Boyle, Telly Savalas
Revealing mistake: When the purser's safe falls through the ceiling, the ceiling metal is far too thin. Bearing in mind also, that the on the other side of the ceiling metal is supposed to be the floor of the next deck up, and that too is a thin flimsy metal, that doesn't even appear that it could support any kind of weight.
Castorp: Why is Crate 16 so important?
Captain Stefan Svevo: Only one other person knew the answer to that, and that's why she had to die.





Answer: I just assumed that it was the plutonium on board. But I may be misremembering. It could have been uranium.
ChristmasJonesfan