Interesting, however these men did not do their homework before heading out, or they would have known ahead of time that Paul Mathias located one of those pieces of keel when he did his survey of the wreck site back in 99. In fact, throughout this doc I kept asking myself "If these men are so hell bent on examining a piece of TITANIC's keel, why not seek out the piece Paul Mathias found?" But, this program did make me rethink the nature of the break-up, at least somewhat, it is entirely possible that what they concluded was the case, but it's nothing really Earth shattering in the grand scheme of things, and contrary to what they said, Thomas Andrews gave a very precise time frame for the ship's survival, there was none of this assuming the ship would become it's own life boat and stop sinking (WTF), it was going to go down, Andrews made no mistake about that. The only time the passengers thought the ship may become it's own life boat was after the stern had broken away from the bow and settled back into the water momentarily before rising up again for the final plunge. This documentary was an interesting revision of what happened, but again nothing Earth shattering, and like I said Paul Mathias spotted and filmed one of those pieces already, if they had dug deeper in their research in preparation for this expedition, they would have known that. Heck, Mathias even mapped it LOL! I'm embarassed for them thinking that if I, a simple TITANIC enthusiest with not a shred of under sea exploratory experience, had been there with my copy of TITANIC: Anatomy of a Disaster, I could have saved them A LOT of time and effort LOL.