Titanic tourist sub goes missing

[dogmush]

Yeah, but it seems like the guy who caused it took himself out as well.

The families can sue, but I bet there isn't much in the way of assets left already.

[WLJ]

The sea doesn't respect fools

[K Frame]

Yeah, but it seems like the guy who caused it took himself out as well.

The families can sue, but I bet there isn't much in the way of assets left already.

Yep, I know that.

[WLJ]

Here's Scott Manley looking at some of the new info as well as new footage of the wreckage.

Wreckage Of Titan Submersible Reveal How It Imploded
https://www.youtube.com/watch?v=CxBtZmyPzVA

He's thinking the hull failed at the ring at the front which is why the front dome shot off cleanly while much of the hull and the occupants got compress towards the rear dome.

________

Whats left of them is probably in that mess in the photo on the left
Note: The below video thumbnail was the only good photo I could find so far

https://www.youtube.com/watch?v=ucIHRndCfTk

[HankB]

. . .
He's thinking the hull failed at the ring at the front  . . .

So the joint between the front dome and the carbon fiber hull failed? Not very surprising - dissimilar joints can be tricky to do properly, especially when highly stressed.

[WLJ]

In the comments

Hi Scott, I was the Head of Composite Materials Department for cryogenic high pressure vessels (up to 1000 atm) at the Russian space company "RKK Energia" from 1979 to 1989. My PhD thesis was related to the strength of composite materials and the technology of developing sealed high pressure vessels with complex temperature and baric loads. I dealt with all kinds of composite materials including Al-Bor, Carbon, Kevlar and many others. Combining metal and composite in a high pressure vessel without losing the integrity of the structure was part of my job. When I saw how they "glued" a metal ring to a composite body.... I would have fired them all. It was a recipe for a death sentence for vessel users. It is incredible how people with little understanding of such complex technologies create structures for human use! All metal connections are usually made during the formation of the composite material, winding it inside the cylinder between layers of materials. This is the ABC that professionals have been using for decades.
Alexander Bakharev

[Hawkmoon]

Here's Scott Manley looking at some of the new info as well as new footage of the wreckage.

Wreckage Of Titan Submersible Reveal How It Imploded
https://www.youtube.com/watch?v=CxBtZmyPzVA

He's thinking the hull failed at the ring at the front which is why the front dome shot off cleanly while much of the hull and the occupants got compress towards the rear dome.

Very interesting. Thanks.

[WLJ]

The front fell off

[Hawkmoon]

The front fell off

I see what you did there ... 

[WLJ]

Better pictures

I don't know if that silt or a chunk was blown out of the front sphere

[Brad Johnson]

When looking at the photos, my amazement at the destruction and the engineering failure aspects is tempered greatly by the knowledge that five bodies are crushed into that endcap.

Brad

[230RN]

When looking at the photos, my amazement at the destruction and the engineering failure aspects is tempered greatly by the knowledge that five bodies are crushed into that endcap.

Brad

That's been a question of morbid curiosity for me.  How did they separate the hamburger of the bodies... clothing?  And how were they buried?

Wow.  Five bodies and 400 atmospheres...

I've been a bit reluctant to bring that up ever since they announced that human remains had been found.

Ick.

Terry, 230RN

[WLJ]

That's been a question of morbid curiosity for me.  How did they separate the hamburger of the bodies... clothing?  And how were they buried?

Wow.  Five bodies and 400 atmospheres...

I've been a bit reluctant to bring that up ever since they announced that human remains had been found.

Ick.

Terry, 230RN

We had a fairly in depth (pun!) discussion on what happens to the human body in an implosion at that kind of depth earlier in this thread and it's not pretty. But of all the ways you could pick to go out it's MAYBE short of sitting on a nuke the quickest way. Lights out quicker than your brain can fire off a neuron.

[MechAg94]

We had a fairly in depth (pun!) discussion on what happens to the human body in an implosion at that kind of depth earlier in this thread and it's not pretty. But of all the ways you could pick to go out it's MAYBE short of sitting on a nuke the quickest way. Lights out quicker than your brain can fire off a neuron.

That said, I am not sure how much of the bodies would be left in wreckage.

[WLJ]

That said, I am not sure how much of the bodies would be left in wreckage.

Probably not much more than goo and shattered bone.
I highly doubt we've ever see it and for good reason.

[lee n. field]

That's been a question of morbid curiosity for me.  How did they separate the hamburger of the bodies... clothing?  And how were they buried?

Wow.  Five bodies and 400 atmospheres...

I've been a bit reluctant to bring that up ever since they announced that human remains had been found.

Nope.  Just leave it.  Burial at sea.

[Hawkmoon]

https://www.cnn.com/2024/09/20/us/oceangate-mission-specialist-testimony/index.html?iid=cnn_buildContentRecirc_end_recirc

Diving in the Titan “was never supposed to be safe,” OceanGate mission specialist Fred Hagen said during his testimony Friday.

“Anyone that felt safe going to depths in the Titan was deluded or delusional, it was an experimental vessel, it was clear that it was dangerous,” said Hagen. “You don’t do it because it’s safe, you do it because it’s an adrenaline rush.”

That's not what Stockton Rush was telling prospective customers ...

Antonella Wilby, a former OceanGate engineering contractor, testified Friday she repeatedly voiced concerns and was repeatedly dismissed.

During Dive 79 of the 2022 Titanic expedition in July, Wilby was working navigation when parts of the Titan’s navigation and acoustic communications systems broke down.

When Wilby raised concerns about the breakdown, she was told she did not have an “explorer mindset.” She was worried escalating her concerns to the board of directors would break her nondisclosure agreement.

She was also told she was not “solution-oriented” and was eventually removed from the communications and navigation teams. At some point, Wilby said she told them, “This is an idiotic way to do your navigation.”

“No aspect of the operation seemed safe to me,” she said. “When you answer specific questions with that’s just what the company founder wants, instead of actual design decisions and data and analysis, it was a red flag to me.”

[230RN]

Nope.  Just leave it.  Burial at sea.

So is that what they did?  A simultaneous multiple sea burial makes sense, if the families would go along with it.

I saw the descriptions of the results in this thread and used the term "hamburger" myself.

As I said, just morbid curiosity about the recovery and treatment of the remains.

[WLJ]

Scott Manley
@DJSnM
Finally, images of the forward ring and the C-Channel showing that it separated cleanly from the barrel section. Note that the inner flange is completely missing around the circumference.  There was glue left across parts of it, but in other place it had pulled away from the titanium. In the glue there are imprints of wrinkles in the layers of the composite.
For the flange to be sheared off the failure of the hull likely started near here, pushing inwards and spreading around the circumference.
I'm not saying the glue itself was a weak point BTW, I'm saying that the performance of the hull was weaker than intended and this put extra stress in these sections as they contracted and expanded at different rates.

https://x.com/DJSnM/status/1838990454500839548

[WLJ]

Scott Manley
@DJSnM
The long section of hull visible in photos of the aft section ran the entire length of the pressure vessel and terminated at the machined end, there was adhesive still attached in one place.
I'm thinking that this is likely to be the section on the opposite side of the initial failure.

https://x.com/DJSnM/status/1838992868045914152

[dogmush]

Better pictures

I don't know if that silt or a chunk was blown out of the front sphere

They raised the front dome back when it happened (there's pics earlier in the thread). Thee acrylic dome that was in the center of the forward titanium dome was blown out. That hole is probably what the silt is coming through.

For that matter, they said they had "recovered human remains" back last year. Looking at these video stills makes me think they brought that crushed hull section up as well.

[WLJ]

Manley dropped another video looking at what's come out of the hearing since the last video and includes some new videos, lots of new photos and detailed analysis of the wreckage.

A metric crap ton to digest in this one. Of note
Questions to how the CF cylinder was constructed.
They found sections where the glue between the CF layers had been ground/crushed to a powder in spots leading to thinking there was movement between the layers.
The monitoring system was indicating issues with the hull on previous dives but Rush dismissed the warnings.
Waiting on the NTSB report

OceanGate Wreck Shows Why Sub Wasn't Strong Enough To Survive - NTSB Shares Important Details
https://www.youtube.com/watch?v=FAAQVntpk00

He says they had to pull the wreckage apart to get to the remains.
So yeah, they're in there