Below

Matthew Davis plays Odell, a curious and insightful officer aboard the US Navy submarine.

Bruce Greenwood portrays Brice, the commanding officer of the submarine who grapples with the eerie happenings on his vessel.

Olivia Williams plays Claire, a determined and strong-willed survivor picked up by the submarine's crew.

Zach Galifianakis takes on the role of Weird Wally, an eccentric and superstitious crew member on the submarine.

Scott Foley plays Coors, one of the submarine's officers who must confront the paranormal activities around him.

Holt McCallany portrays Loomis, a crew member aboard the haunted submarine, dealing with the tension and fear within its steel walls.

Nick Chinlund is Chief, a higher-up on the submarine who contributes to the decision-making in the face of the supernatural threats.

Jason Flemyng takes the role of Stumbo, a sailor aboard the submarine, trying to survive the grim circumstances.

Dexter Fletcher portrays Kingsley, a crew member whose experience aboard the submarine is marked by mysterious and disturbing events.

Andrew Howard plays Hoag, one of the submariners facing a series of unexplainable and frightening incidents.

Christopher Fairbank acts as Pappy, an older and seasoned sailor on the submarine, coping with the psychological stress of the journey.

Matthew Leitch appears as Zap, a member of the submarine's crew who must navigate through the tense and supernatural occurrences.