JEMC said:
If I'm not mistaken, what killed more people during the Titanic sinking were the fact that the lower classes had the "doors" closed and not all could escape in time and the fact that those who fall into the water (even the ones with life-jackets) died because of hypothermia. |
Yes and no. The staff prioritized telling the first class passengers, but still most of the lower class did wind up on deck. In fact, if you trust wikipedia then the lower class passengers actually had a soccer game with a block of ice going on during the sinking. And hypothermia did kill most of the ones there, eventuallly.
Still, there are things you can do. Wool was a popular outer clothing fabric because it retains something like 90% of it's insulative properties, even if it's wet. It's just a matter of making or finding a way to stay out of the water for extended periods of time. The movie required blind luck to find a big bit of flotsam, but really so many things float it's got to be doable in a more controlled way. I expect no one thought to try because MacGuyver wasn't around back then.