Nicki

Other mistake: During the submarine interior scene, there are several dead seamen shown floating about. One of them is pretty close to the camera and floating with his eyes open. He blinks before the shot ends.

Nicki

Factual error: During the flooding of the drill rig, Bud's wedding ring saves the day by preventing the barrier door from closing. Even titanium couldn't stop a moving hydraulic barrier, in ring form. It's very hard in terms of resisting scratches, but that doesn't mean it wouldn't deform or crack.

Nicki