The amount of blood on Noemi's face changes between shots as she is being dragged by the zombies back below deck.
At the start of the film, when Noemi is speaking to Lil about Kathy being missing, Lil is writing on film boxes and also on a clipboard she's holding. When she turns the clipboard over, however, there's no paper on which to write.
When the boat catches fire near the climax of the film, the fire is too large and reveals the fact that it is a model that's burning, not a real ship.