In reality, Titanic was able to carry enough boats on board plus 60 extra, as noted in Tom Andrews Note Book, but a red line was threw the notes. The third class was neevr kept below because they was simply poor and third class, the barriers was always locked at all times to prevent class mixture, of the American port officals found out the ship would be moored for weeks while everyone underwent health and safety checks, costing a hell of alot of money, those ships always had tight schedules. During the sinking, the order was never given to release the barriers, at first nobody knew the situation understandably, why it was never given after is anyones guess, easy to slip the mind when you know 1300 are going to die. In the investigation one of the crewman said even when the bow was nearly under, we didnt think it would sink, we belived it would just stay like that and correct itself abit.