The worst error concerned the bow thruster at the end.
Also, it seemed that from the ballast tank (by definition and appearance at the bottom of the ship) they seemed to travel UP a few levels, thus in reality placing them above the bottom of the ship.
I found it a bit hard to believe the Captain could have convinced anyone to stay in an underwater room with giant windows showing the ocean behind the glass.
- Why was it still running? Almost all other electrical power was out, and a bow thruster would not be on an emergency circuit.
- When Richard Dreyfuss opens the hatch into the bow thruster shaft, a hurricane force of wind blows into the room. Ship propellers are slow-turning compared to aircraft propellers (so as to avoid cavitation) and are not going to move large quantities of air - hardly any, in fact, as they're not shaped to move low density air.
- There seemed to be a propeller on either side of the shaft. For air to blow inward, both props would have to be pulling air towards each other. The idea in a bow thruster is to pull water in one end and out the other.
- Nobody would build an inward-opening hatch below the waterline.
Also, it seemed that from the ballast tank (by definition and appearance at the bottom of the ship) they seemed to travel UP a few levels, thus in reality placing them above the bottom of the ship.
I found it a bit hard to believe the Captain could have convinced anyone to stay in an underwater room with giant windows showing the ocean behind the glass.