Submersible tour boat joins the Titanic
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@LuFins-Dad said in Submersible tour boat joins the Titanic:
So if they heard the implosion at the time, why didn’t they say anything until yesterday?
My guess is, while it was consistent with an implosion sound, they couldn’t know for sure if that’s what it was, and didn’t want people to call off the search based on any statement they made.
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@George-K said in Submersible tour boat joins the Titanic:
THey're also blaming the implosion on repeated stress on the hull.
I know nothing about undersea vehicles, but when we test for structural integrity under pressure there's a couple of things we do:
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Test a sample to considerably higher pressure than it's actually going to be subjected to - i.e. 1.5 times or 4 times the rated pressure
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We don't allow use of the prototype we've actually done the tests on in the field.
It looks like what these guys did was test the safety of the submarine by actually just using the submarine, and since it was ok, they just carried on using it.
William Kohnen, chairman of the Manned Underwater Vehicles Committee, has told the BBC that regulations for building submersible vessels were "written in blood".
Yeah, these people just ignored all the data that was already out there. Also, they avoided having to comply with legislation by only operating in international waters. People should go to jail for this, except of course the guy making the decisions is dead.
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@LuFins-Dad said in Submersible tour boat joins the Titanic:
So if they heard the implosion at the time, why didn’t they say anything until yesterday?
To the public, maybe. I believe the Navy was coordinate with search and rescue efforts to narrow their search area.
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It was painless.
So what happens when a submarine implodes?
A sub descending to the depths of the wreckage of the Titanic is under enormous pressure from the water outside. If the submarine were to implode, the hull would be crushed at unimaginable speed.
A former submarine expert explained what this might be like. Dave Corley, a retired Navy Captain, said: "When a submarine hull collapses, it moves inward at about 1,500 miles per hour - that's 2,200 feet per second.
"A modern nuclear submarine's hull radius is about 20 feet. So the time required for complete collapse is 20 / 2,200 seconds = about 1 millisecond. A human brain responds instinctually to the stimulus at about 25 milliseconds. Human rational response is at best 150 milliseconds.
"The air inside a sub has a fairly high concentration of hydrocarbon vapors. When the hull collapses it behaves like a very large piston on a very large Diesel engine. The air auto-ignites and an explosion follows the initial rapid implosion Sounds gruesome but as a submariner I always wished for a quick hull-collapse death over a lengthy one like some of the crew on Kursk endured."
John Jones, a former member of the US Navy Submarine Force, added: "Implosion events occur within milliseconds, far too quickly for the human brain to comprehend."
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Somebody noted that at the depth we're talking about, if a diver's compressed air tank had a hole knocked in it, water would rush in rather than air rushing out.
Which kind of makes the lackadaisical attitude to safety even more shocking. It's like going to the moon and not worrying about safety.
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Not a big fan of James Cameron, but he makes some good points in this short interview:
“Little by little I am learning the art of being quite content by doing very little slowly” ~ Lionel Hardcastle
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@Renauda said in Submersible tour boat joins the Titanic:
Not a big fan of James Cameron, but he makes some good points in this short interview:
He said that on Monday, when he heard the sub had gone missing, "I immediately got on the phone to some of my contacts in the deep submersible community.
So that's why I was getting so many busy signals.
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Ben Shapiro: "Hard to think of a better way to undermine institutional credibility than to spend days pretending that a submersible may be at the bottom of the ocean and that the entire world should hold its breath, while knowing for days the thing imploded."
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@bachophile said in Submersible tour boat joins the Titanic:
what the hell was the rhythmic knocking heard after that
Chinese man #1: How can we measure the US Navy's listening capability?
Chinese man #2: Blow up a submersible and see if they hear it.
Then go knock on the Titanic to see if they can hear that. -
@Jon said in Submersible tour boat joins the Titanic:
I’ll repeat what I said earlier - they probably didn’t know with certainty.
They knew with a high probability. That's why they didn't expedite the submersible from the UK that was ready to go. At first, the U.S. said "Hurry", then turned around in a short period and said, "Standard deployment".
Always remember, Operation Valkyrie was an act of sedition.
Warning: I post things that interest me. Read and comment at your own discretion. -
@Jolly said in Submersible tour boat joins the Titanic:
@Jon said in Submersible tour boat joins the Titanic:
I’ll repeat what I said earlier - they probably didn’t know with certainty.
They knew with a high probability. That's why they didn't expedite the submersible from the UK that was ready to go. At first, the U.S. said "Hurry", then turned around in a short period and said, "Standard deployment".
I agree that they likely knew with high probability. All the same, there is controversy surrounding the offer to deploy the Megellan from the onset. Seems that there was never really any hurry to have it on site and when it was decided to bring it, other technical issues ensued.
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@bachophile said in Submersible tour boat joins the Titanic:
what the hell was the rhythmic knocking heard after that
Skip to 6:50 for the answer
1950s movie on the beach
Link to video -
I always imagined there were people rolling their eyes at the hope for a successful rescue. I didn't know some had more information than others, but I don't think more information was ever necessary to know they were irretrievably gone. There was never a plausible explanation other than catastrophe, and there was never a plausible hope of rescuing them from 12k down.
