Looking at the wreck photos and maps, I realized that the Forward Tower, the structure beneath of the 3rd funnel didn't have sufficient data other than some partial pictures and the undistinguishable structure(which actually is the forward tower) near the two double bottom pieces.
Are there any overall diagrams/pictures of the forward tower from the sides or possibly the break section? If there is one is the break section clean or crushed?
Also if that structure broke away from the stern during stern implosion like the CGI visualizations, why was it so close to the double bottom pieces, which broke away the other way? And if the structure broke away during the breakup, how did it drift away from the stern wreck, unlike the boilers from boiler room 1?
Was the aft expansion joint a major factor of this structure to break away from the rest of the stern?
Survivor William Lindsay was close to the ship. He said:
"I was on the ship till the water came up to the funnel and got away on a raft. There were 39 of us on it. Oh, but the sight was awful. I shall never forget it, for she broke in three pieces."
Survivor Mrs. Chaffee was in lifeboat 4 which was very close to the ship. She said:
"The ship sank steadily until just at the last, when it plunged rapidly. Just before going down it seemed to writhe
(twist), breaking into the three parts into which it was divided. First the middle seemed to go down, lifting bow and stern into the air. Then it twisted the other way, throwing the middle up. Finally the bow went under, and it plunged, stern last."
Forensics have proven that the broken double bottom pieces were separated when the ship was in a V position, or to put it more accurately an L shape. The pieces are upside down on the sea floor and the edges are bent downward
This would mean that right side up they broke when the ship was in this position:
The breaking of the double bottom and the collapse of the tower debris above it would have been the first signs to the public that she had broken apart as they would first hear a terrific noise and witness the middle falling down.
Nellie Becker
"She seemed to break right in the middle, and the middle fell in."
Mrs. Chaffee
"First the middle seemed to go down"
Mrs. Hippach
"The steamer sank towards the center."
During the initial stages of the evacuation the water rose up to the waterline and the bow only tilted down as far as E-deck. There were reports of a large number of open portholes along her broadside and this would accelerate the bodily flooding of the ship. Once the ship's bow had settled down as far as E-deck the water would wash up the corridors and down into the central parts of the ship, accelerated by the open portholes, and this would cause the forward tilt to ease back and allow the ship to settle down much more bodily by her entire broadside.
I recall several Third class passengers berthed in the stern could not return as they found water all the way aft, no doubt caused by open portholes, primarily on the port side. There was also a report of a collapsed wall / door in boiler room 5 which would allow the water to significantly filter out of the bow and flood further aft through the breached wall / door, with also the possibility of partially opened watertight doors further aft, and the collapse of walls throughout the ship that were not supported with bulkheads, which would accelerate the flooding of the middle of the ship.
As the downward tilt eased back, the survivors watched her decks settle down together in unison.
When the water spilt into the upper decks (before it had time to filter down into the lower sections and boiler rooms) it would create a dangerous 'top heavy' motion of the ship and the passengers were ordered to balance the ship by moving from the port side to the starboard side and back again in order to keep the ship balanced. Survivors noticed the ship appeared to right herself at various times during the evacuation, and when the top heavy motion increased over time it became harder and harder to keep the ship balanced on a level keel.
Mr. Hemming
"The captain was there, and he sung out: "Everyone over to the starboard side, to keep the ship up as long as possible."
Miss Glynn
"We watched the Titanic rolling and bobbing like a cork."
Mr. Haggan
"The ship was shaking very much".
Mr. Barkwork
"I remember somebody shouted: 'Go gently!' as if a sudden shift of weight would have disturbed the ship's position."
Mr. Lightoller
"The ship seemed to be heaving tremendous sighs."
As the ship settled down bodily with an enormous increasing weight in the middle sagging her down, and the constant rolling of the ship from side to side, I believe the stresses on the hull were too much, as the bow would lean heavily over to port and the stern would be pulled over with it, and owing to the flexibility of her structure and the slight delay in the stern responding to the twist of the bow, I believe the friction of this constant rolling had created tears along her side which rapidly grew as she settled deeper in the water, until one more roll became one too many and her hull breached open in the middle.
Like a suspension bridge twisting in the wind.
This would account for the twisting motion that Mrs Chaffee witnessed when she saw the ship break into three on the surface.
Mr. Thayer could hear the steel breaking and he witnessed the bow moving forwards in the water. Percy Oxenham also noticed the bow moving away from the stern as she broke and this would mean the bow and stern would not have compressed into each other as the bow broke away and moved forwards, and possibly the distance of the bow and stern on the seafloor could be very similar to the distance they were in before each section sank independently.
The forward momentum of the bow would allow itself to detach from the stern and prevent it from crushing and compressing into it as the bow drew away from the stern.
Mrs. Chaffee
"Just before going down it seemed to writhe
(twist), breaking into the three parts into which it was divided. First the middle seemed to go down, lifting bow and stern into the air. Then it twisted the other way, throwing the middle up. Finally the bow went under, and it plunged, stern last."
Mr. Oxenham
"When the big ship parted and the hulks drifted apart before going under we all sat still shivering and afraid. It was the most wonderful and at the same time awful thing I ever saw. The halves seemed to rise out of the water, gaining impetus for the great trip to the bottom 2,000 fathoms deep."
Mrs. Hippach
"We heard a fearful explosion. I saw the ship split open. At the same time the ship's bow rose up in the air as the steamer sank towards the center."
Ellen Walcroft
"She just broke in two and the ends were sticking up."
Jack Thayer
"The ship appeared to split well forward to midship, and bow or buckle upwards."
Susie Webber
"There was an explosion, and then I saw the leviathan part in the middle. The stern rose high in the air. The bow less high."
William Mellors (On the ship - near the bridge)
"Suddenly, her nose (the bow) on which I was on, seemed to suddenly rise from underneath the water."
Eugene Daly (On the ship - near the bridge)
"I reached a collapsible boat that was fastened to the deck by two rings. It could not be moved. During that brief time that I worked on cutting one of those ropes, the Titanic gave a lurch downward and we were in the water up to our hips. She rose again slightly, and I succeeded in cutting the second rope."
Thomas Dillon (On the stern)
"The bow seemed to bob up and then break off like a piece of carrot."
A rough idea.