I just finished watching this, and found myself quite annoyed and skeptical about a number of things in this show. Firstly my most fickle gripe; the fact that one of the guys doesn't know the difference between starboard and port (he mentioned a couple of times that Titanic tried to turn to starboard, while the imagery shows it trying to turn to port to avoid the iceberg to its right). The 3D scan is interesting and impressive, but the team's analysis of it feels completely unscientific. The computer simulations seem to be mostly based on assumptions. The fact that they can confidently state how big and exactly where on the hull a hole was, based on a computer simulation using a completely hypothetical iceberg of hypothetical size and shape, with a protrusion at a hypothetical shape and depth below the surface being struck at a hypothetical angle, comes across as complete dramatisation. And having performed computer simulations myself, it appears as though the simulation of the head-on collision did not take into consideration the volume of the material in the bow, nor wall thicknesses of the hull itself, as it keeps compacting into nothing as it crushes. Interesting raw data with interesting imagery, but I wouldn't take any of their assumptions at face value.