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)
Suggested correction: Maybe Katie moved it?
Plot hole: After the small boat blows up, all the characters are off the big ship. They magically appear back on top of the main ship, but had absolutely no way of getting up there. (00:46:50)
Suggested correction: Wasn't Murphy still on the board of the big ship during the explosion? He could pull them on the rope or something.
What rope? They got up on a crane. Some soaking wet natural fiber rope from the 60s? What about the injured guy? Nah.
Continuity mistake: When Munder goes through the floor, we get a shot from beneath seeing him dangling down the hole from his waist. But when it cuts, we see Epps reaching for Munder down the hole. The upper half of his body should be sticking up from the hole. (00:20:30)
Suggested correction: As Munder is pulled back up we get shown that there is a large space between the ceiling of the room he almost falls into and the rotten floor of the deck above it. The upper half of his torso would be in this space, hence not being visible.
Factual error: The wire which cuts the dancing characters in half severs their torsos in a neat line a few inches below their armpits - but their arms remain intact. They should have been severed too, a few inches below the shoulder, and should fall away from their bodies separately.
Suggested correction: The dancers for the most part have their arms extended roughly horizontally around their partner, hence the wire generally passing below and leaving them attached.
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.
Suggested correction: It was implied that if they sinned in their life they could be marked not immediately before death. That is also why the demon explained that he couldn't mark Katie because she never committed any sins.
Plot hole: After the tugboat is sunk, the crew try to repair a very old ocean liner - the ghost ship - using equipment that could only have come from the tugboat, which had the latest scuba gear and welding gear, but they are all at the bottom of the ocean in the blown-up tugboat.
Suggested correction: The salvage crew are shown very early on bringing a variety of equipment onto the liner long before their own ship is sunk. It is obviously intended to insinuate where the salvage gear required later came from.
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.
Suggested correction: I think the captain's ghost did that just like Francesca had the lit cigarette inside the ash tray.
I amended my entry to reflect your suggestion, thank you.
