Corrected entry: In the scene where Josh Lucas and Kurt Russell are looking at a map of the ship, Josh points to the right side of the ship, and says they have to go in that direction to get to the engines. If the ship is upside down, and Josh is pointing to the right, then they would have to go to the left. That would be the correct direction if the ship were upright. It's not a character mistake because once the debris has been cleared, they end up going towards the right.
Jane Doe
15th May 2006
Correction: I'm not sure which scene you're referring to, but all through the movie every map they look at is upside-down... even at the end when Kurt Russell pulls the map off of the wall. He holds it upside-down, so he was pointing in the right direction.
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