Continuity mistake: When Epps first walks into Katie's cabin, there is a straw hat underneath a suitcase on top of the clothes rack. Yet when Epps gets up again after looking at the dress, the hat is now on top of the suitcase without her having moved it. (00:53:40)
Other mistake: Ferriman says he can only mark someone if they do something sinful first. Dodge shouldn't have been marked as he technically shot Ferriman in self-defense, which isn't considered a sin, but near the end Epps sees her dead crewmates and Dodge is also shown as well as marked.
Factual error: When Murphy goes into the "Cabina de Capitano" (Captain's Cabin), he sees the glass with a little alcohol in it, and the bottle standing next to it, without a cork or stopper. If left standing open like that, after 40 years, the liquid would have evaporated. However, it can be said that the Captain's ghost made it appear to entice Murphy.