Poseidon

Poseidon

Poseidon

Dylan Johns

Robert Ramsey

Richard Nelson

Jennifer Ramsey

Elena Morales

Christian

Lucky Larry

Marco Valentin

Gloria

Captain Bradford

Chief Officer Reynolds

Emily

1st Officer Chapman

John

Jay

Nick

Mary

Security Officer

Poker Dealer

Deejay

Nightclub Hotty

Wine Steward

Passenger #1

Passenger #2

Passenger #3

Passenger #4 (as Vincent DePaul)

Woman on Cell

Crying Girl (uncredited)

Bridge Officer (uncredited)

Bouncer (uncredited)

Ballroom Dancer (uncredited)

Bridge Officer (uncredited)

Andre (uncredited)

Hero Passenger (uncredited)

Passanger (uncredited)

Captain's Table Guest (uncredited)

Ballroom Dancer (uncredited)

Headwound Harry (uncredited)

Champagne Waitress (uncredited)

Waitress (uncredited)

Doctor Anderson (uncredited)

New Year's Eve Band Bass Player (uncredited)

Club Dancer (uncredited)

Wine Steward (uncredited)

Passenger #2077 (uncredited)

Doctor (uncredited)

Ballroom Dancer (uncredited)

New Year Eve Party Passenger (uncredited)

Server (uncredited)

Drunk (uncredited)

Bearded Businessman (uncredited)

Dying Woman (uncredited)

Chef (uncredited)

Young Waiter (uncredited)

Bridge Officer (uncredited)

Passenger (uncredited)

Waitress (uncredited)

Des (uncredited)

Passenger #5 (uncredited)

Dancer (uncredited)

Screaming Girl (uncredited)

Ballroom Dancer (uncredited)

Healthy Bandmember (uncredited)

Dancer (uncredited)

Nightclub Goer (uncredited)

Many members of the cast and crew came down with minor infections due to being in dirty water for so many hours a day.

Dylan Johns (Josh Lucas) jogging on the deck of the ship during the beginning credits the evening before the ship capsizes pays homage to the original film, The Poseidon Adventure (1972). In it, James Martin (Red Buttons) jogs on the deck of the ship before the night of capsizing. Mr Martin starts off by taking a deep breath at the deck railing before starting off, and Dylan ends his jog at the deck railing. Both wear a full jogging suit which are both the same color.

Lindsay Lohan was originally offered the role of Jennifer Ramsey, but turned it down. Emmy Rossum was eventually cast for the part.

After climbing into a ballast tank, the passengers need to fill the tank in order to open the pressure relief valve that will spill them into the next tank. Aside from the fact that the tank would be impossible to fill (the pump suction is in the air and the tank vent is underwater), and the fact that the pressure relief valve would not open (there will not be enough pressure at the top of the tank), this valve should not exist. A pressure relief valve in a ballast tank allowing water to flow into the adjacent ballast tank would defeat the purpose of having separate ballast tanks. Tanks are kept separate to trim or heel the vessel as necessary, while preventing water from sloshing and de-stabilizing the ship. Having one tank spill over to the next via a pressure relief eliminates that control, effectively creating a "Titanic" scenario where the tanks keep spilling over, forcing the ship to take on an extreme trim and potentially "nose dive" or roll. In the event that a ballast tank is over-filled, the water would simply spill out the tank vent.

According to the original novel and The Poseidon Adventure (1972) on which this film is based, the huge wave was caused by an underwater earthquake. In reality, such waves would be barely, if at all, noticeable by people on a ship in mid-ocean and would certainly not cause the boat to capsize as depicted. Waves caused by undersea quakes increase in size only when they reach shallow areas near the coast, resulting in devastating tsunamis.

The scene in which Dylan (Josh Lucas) grabs Elena to force her into the air duct she screams "No Josh."

Richard Nelson: [when Elena passes on her crucifix in flooding shaft] Oy vey, that would be ironic.

Richard Nelson: Thank you, gorgeous!

Lucky Larry: You know, I forgot. Big hero. Rescued all those women and children from the fires. Got elected. Man of the people. But you're not the boss anymore. Hm? You quit. Couldn't hack it. If I recall correctly, you couldn't even hang onto your wife. Come on. Come on.