Continuity mistake: Alex is telling Annie to get on a lifeboat and is getting soaked. A minute later, when he enters the bridge, his suit is completely dry. (00:42:00)
Continuity mistake: When Alex rescues Drew, it is the middle of the night. There are a few consecutive events, then it is instantly daylight. But the events are all consecutive. There is no way the sun could rise that fast.
Continuity mistake: When Alex surfaces from under the ship, he chucks his mask off and it floats away. Once Geiger has forced Annie to drop Alex back into the water, he suddenly has the mask back. (01:21:00)
Answer: The ship has no way to stop or steer. By hitting land it would bring the ship to a stop (at a considerable cost) where as if they go out to sea, they would just continue to keep going until out of fuel or hit something they can't avoid and risk everyone drowning. A risk that is not present if they hit land.
Ssiscool