Poseidon

• Movie Goof (continuity error): In the ballast tank they open the valves to allow water in. Though ballast tanks have holes at the bottom of the ship the ship is not completely submerged. Where does the water come from?
• There was only one day of exterior filming done on the entire shoot. It was to get footage of Josh Lucas jogging that was eventually composited into the opening CG shot of the ship.
• Movie Goof (factual errors): There couldn't have been any working electricity. After the ship capsized, the generators wouldn't have been able to maintain a fuel supply, not to mention generators were falling and the fuel was burning up and exploding. This also means the thrust propellers wouldn't have been able to be running.
• Movie Goof (errors made by characters, possibly deliberate errors by the filmmakers): Robert Ramsey, who "used to be a fireman", stands right in front of a hot door when Dylan Johns opens it. Definitely the ex-fireman never heard of "back draft" or he would stand to the side and definitely ask everyone to stand back.