Hello, everyone! When the ship originally sank in 1912, the official report stated that it did not break in 2, but went down in 1 piece. I'm a member of the Marine Forensics Committee, and author or co-author of three peer-reviewed papers on the “Titanic”. Second Officer Lightoller, at the American and British Inquiries, His privately published account of the Titanic sinking helped oceanographer Robert Ballard determine the ship's final resting place - and proved beyond all doubt the Titanic had indeed split in half before she went … James Cameron’s 1997 film Titanic shows the stern section rising to about 45 degrees and then the ship splitting in two from the top down, with her boat deck ripping apart. Thayer did have some posthumous vindication. There were more witnesses both supporting and denying the break-up than R9 stated, but many more than not said the ship broke up.

by Bill Wormstedt Up until 1985, when Bob Ballard discovered the wreck of the Titanic on the ocean floor, it was generally believed the Titanic sank intact, in one piece.
Until this discovery it was generally accepted that Titanic had sunk in one piece, despite a number of witnesses who said that they saw her break in half. This would have been very dramatic. Not one of the survivors on the boat deck of Titanic remembered the deck splitting in half while Titanic was still on the surface. The Facts - What did the Survivors See of the Break-up of the Titanic?

The latter is the basis of the very influential delineation, graphic and otherwise, of the break-up in Ballard’s Discovery of the Titanic (1989), Lynch and Marschall’s Titanic: An Illustrated History (1992), Cameron’s film Titanic (1997), and Quinn’s Titanic at Two (1997: 87). Here's a good article on the sinking of the Titanic (PDF File). The gist of the article seems to be that there were a total of 82 passengers/staff that presented testimony before the two inquiries (US and UK) an of those 82 people, only 4 claimed that the ship sank intact, 13 provided statements that either were implicit or explicit in that the ship broke apart.