While waiting for my car being repaired at the dealer, I managed to get control of the waiting room remote, and turned off Ellen Degenerate. I put History on, and caught the last 10 minutes of what had to be the Ballard show. Very good - damn, those photo mosaics were incredible, as was the mapping of the ocean floor, as well as the analysis that led to the conclusion that the stern had been spiraling down, whereas the bow section glided
The one thing they pointed out was that the design of the ship was the primary reason it stayed upright. They pointed out that with the Andrea Doria, the Lusitania and the recent grounding off Italy, they all rolled when they took on water. The Titanic did not, even when sinking. Might have been the trimming efforts, they thought it was based on the design of the ship.