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philip964 wrote: Thu Jun 22, 2023 5:13 pm https://apple.news/AA1VfoiWiQQ-NXwOmmxMQ9w

All 5 members of submersible tourist craft are dead.

RIP

Craft imploded. Article above is about Navy hearing it when it happened.

Implosion would not have been my first thought about how it went down. Caught on debris, electrical failure or a small leak that flooded the craft would have been my fist guesses.

jb2012 wrote: Thu Jun 22, 2023 8:01 pm

philip964 wrote: Thu Jun 22, 2023 5:13 pm https://apple.news/AA1VfoiWiQQ-NXwOmmxMQ9w

All 5 members of submersible tourist craft are dead.

RIP

Craft imploded. Article above is about Navy hearing it when it happened.

Implosion would not have been my first thought about how it went down. Caught on debris, electrical failure or a small leak that flooded the craft would have been my fist guesses.

The thing is, at that depth, a small leak means instant decompression of the sub. There is no small leak when you're talking about thousands of pounds of pressure per SQUARE INCH. As soon as the craft lost internal pressure at those depths, it was immediately crushed, and the internal temperatures likely rose by incredible amounts instantly.

Grayling813 wrote: Thu Jun 22, 2023 6:34 pm

FastCarry wrote: Thu Jun 22, 2023 6:23 pm Submersible requires a launch craft, submarine doesnt

I have left a submerged submarine onto an attached submersible, DSRV Mystic, and descended about 3/4 mile deep. I’ll never forget what those of us who were “taking a ride” were told once the Mystic detached from the submarine and began descending: “Don’t worry, if anything bad happens we’ll all be dead before we realize what is happening.”

eyedoc wrote: Thu Jun 22, 2023 9:44 pm "The US Navy’s undersea listening system is good enough for the operators to hear the difference between an implosion and an explosion."

It was that good in the 70s when my uncle heard a sub implode with it.

eyedoc wrote: Thu Jun 22, 2023 9:44 pm "The US Navy’s undersea listening system is good enough for the operators to hear the difference between an implosion and an explosion."

It was that good in the 70s when my uncle heard a sub implode with it.

philip964 wrote: Fri Jun 23, 2023 5:27 pm “ The Titan’s hull was constructed from two different materials: carbon fiber-reinforced plastic and titanium.”

Your kidding me?

powerboatr wrote: Thu Jun 22, 2023 10:26 pm

eyedoc wrote: Thu Jun 22, 2023 9:44 pm "The US Navy’s undersea listening system is good enough for the operators to hear the difference between an implosion and an explosion."

It was that good in the 70s when my uncle heard a sub implode with it.

YES
it is despite what you hear on the budget floor
man made sounds are very very different from nature.
a crushing collapse , would be very noisy in the scheme of things

a leak in a drop or a spray in a submarine...maybe they could fix it, but its not a submarine.
its a really thin walled bubble and a leak would go from HEY its wet, to HEY we are dead extremely fast


not so sure about the sudden HEAT from imploding, but i can see it from a science standpoint
lots of energy to displace really fast
think boat propeller cavitation and the bubbles that eat at a prop surface

those people probably only had time to think Oh, if at all

a shame

And indeed he will. Just not for the reason he probably hoped.

The carbon fiber and titanium – there’s a rule you don’t do that,” Rush said, speaking of the materials used to construct the sub. “Well, I did. It’s picking the rules that you break that are the ones that will add value to others and add value to society, and that really to me is about innovation.

It is very difficult to test and verify. ...Metallic hulls have elasticity to them. We know how they behave. ... But carbon fiber – very, very strong in tension. They’re not so strong in compression. And we know that. But it is how do they react under extreme pressure that leaves a lot of research.

Rush was also definitely warned that this approach was, at best, incredibly risky. The BBC obtained emails from 2018 between deepsea submersible expert Rob McCallum where McCallum begged him to hold off on using the Titan until it was thoroughly tested and independently classified. Rush’s response was that he was “tired of industry players who try to use a safety argument to stop innovation.” According to McCallum, the email exchange stopped because OceanGate’s lawyers threatened to take legal action against him.

“I think you are potentially placing yourself and your clients in a dangerous dynamic,” McCallum told Rush. “In your race to Titanic you are mirroring that famous catch cry: ‘She is unsinkable.’” In another message, Rush told McCallum, “We have heard the baseless cries of ‘you are going to kill someone’ way too often. I take this as a serious personal insult.”

The Annoyed Man wrote: Sat Jun 24, 2023 11:24 am According to this video, Rush fired his own in-house engineer who repeatedly told him that this submersible design MUST be NDT and NDI tested for pressure-rating before being used for human exploration. The plaintiff's case is writing itself when all of this goes to court against Rush's estate.

Incidentally, the company’s website has been taken down.

https://youtu.be/TKLamhyJ6bE