Rather than deck chairs, I thought all of those lovely sideboards filled with fine china would work very well, particularly if you filled them up with life jackets and lashed them to each other. It would be a pain getting them up on the deck, but fear of death and ample time would have made it quite doable. Also, going into the kitchen and smearing-up your body with lard might be a good idea too. Those English Channel swimmers do that. Still, the wisest course of action would have been to either A) not hit an iceberg or B) not build a ship that was guaranteed to sink if it did (please: emails on the superior craftsmanship of the Titanic should be kept to a minimum).