"The dining room set was built inside a steel frame structure, much like what you'd find inside a skyscraper. Everything had to be bolted onto that steel frame so the set could withstand the pressure of the set being raised and lowered, with tons of water dumping into it. A normally built set would just have collapsed. Because of the flooding, we also had to take a lot of safety precautions in regard to the lighting. "First we'd film the scenes in which everything looks as elegant as possible, representing all the hope and innocence of the time; then, after some modifications to the set, we'd sink it and watch everything go belly up. Take two in the sinking of the dining room set was horrendous, because there were hundreds and hundreds of props: chairs, tables, lamps that had to stay on, china, all of that. It took hours and hours to set up correctly." -- Russell Carpenter, ASC