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Debris found came from missing Titan sub, says friend of passengers

bbc.com

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Re: Debris found came from missing Titan sub, says friend of passengers

#151
post #137

Well that's better than slowly asphyxiating or dying of hypothermia, probably didn't even know what hit them.

It’s definitely better for them, but its infuriating that this CEO died thinking he was a genius for building this shitty sub with very few safety precautions.

At least he died doing it and not someone he employed.

Re: Debris found came from missing Titan sub, says friend of passengers

#152
post #6

I wonder if U.S. agencies (e.g. the Navy) had picked up the sound of the implosion days ago, back when the Titan was said to have lost communication, and knew all this time that the Titan had likely already been destroyed. But there's no incentive for them to publicly say anything, as it would hint to their underwater surveillance capabilities. And the "rescue effort" is good practice for their crews. I watched most…

Might explain why they denied offers from the British rescue sub (IIRC the only available one that could go to such depth) that wanted to come out to try to rescue the crew.

Re: Debris found came from missing Titan sub, says friend of passengers

#153
post #137

Well that's better than slowly asphyxiating or dying of hypothermia, probably didn't even know what hit them.

It’s definitely better for them, but its infuriating that this CEO died thinking he was a genius for building this shitty sub with very few safety precautions.

What's more infuriating is that they fired an employee who raised safety concerns.

https://www.forbes.com/sites/katherinehamilton/2023/06/21/oc...

(already submitted minutes ago)

Re: Debris found came from missing Titan sub, says friend of passengers

#154

Earlier quoted context omitted.

I'd imagine that location is the second most acoustically monitored part of the Atlantic (looking for ruskie subs coming from the north). https://en.wikipedia.org/wiki/SOSUS

What's the first?

I would guess the gap between Iceland and the U.K. for the same reason.

Re: Debris found came from missing Titan sub, says friend of passengers

#155

Earlier quoted context omitted.

I'd imagine that location is the second most acoustically monitored part of the Atlantic (looking for ruskie subs coming from the north). https://en.wikipedia.org/wiki/SOSUS

What's the first?

I assume it's: https://en.wikipedia.org/wiki/GIUK_gap

Re: Debris found came from missing Titan sub, says friend of passengers

#156
post #53

If it did implode in multiple pieces it means the experts were right; many said that carbon fiber was a poor choice because while it's light, it breaks like glass, contrary to steel which tends to "open" slowly.

I felt it was kind of telling that they found the two titanium end caps in the debris field, presumably intact, but only pieces of the pressure hull.

Re: Debris found came from missing Titan sub, says friend of passengers

#157
Here are a couple of quotes I pulled from the USCG press release:

> "debris is consistent with a catastrophic implosion of the vessel"

> "1600 feet (487 meters) from the wreck of the Titanic"

> "it is a smooth bottom", "there is no wreckage of the Titanic in the area"

> "size of the debris field is consistent with an implosion in the water column"

> "there doesn't seem to be any connection between the noises and the location of the debris on the seafloor"

Re: Debris found came from missing Titan sub, says friend of passengers

#159

Earlier quoted context omitted.

Yes on the sea floor but according to BBC: > Debris patch was found by an ROV from the Horizon Arctic, a Canadian commercial vessel which arrived last night near the Titanic wreckage site. > It was loaded with support equipment and was also carrying an Odysseus 6k ROV that can reach depths of 6,000m. https://www.bbc.com/news/live/world-us-canada-65967464?at_bb...

From the article it seems like this ROV doesn't have sonar, and can only search visually at a short distance. They claim a distance of around 20 feet. I'm surprised they could find a debris field so fast with such a small range of observation.

Turns out that the debris field was only a few hundred meters from the bow of the Titanic which is approximately where they lost contact in the water column, so I suspect their search consisted of diving to the last known location of the Titan and then just going to the sea floor from there.

Re: Debris found came from missing Titan sub, says friend of passengers

#160
post #4

Based on this it seems pretty likely that it immediately imploded and the ‘banging’ was from the Titanic debris itself.

Why is it more likely that it immediately imploded rather than after a few days? The latter is more probable to me as it has never been tested under water for more than a few hours at a stretch. This will also be consistent with your banging hypothesis which was only heard after a day or two when it got lost. And also with the fact that no immediate sound disturbance was registered with the controlling ship. I of cou…

Immediate implosion if a far more likely explanation because give that we knew it imploded the most likely time would be immediately after the pressure vessel reached maximum or near maximum stress and it failed. The time actually is not the biggest factor; it is the number of cycles the pressure vessel has endured. An implosion after a relatively low number of cycles is consistent with past incidents with pressurization failures.

As was pointed out, the submersible is pretty large and its a essentially a large cylinder which induces stress in the middle. Usually you make deep sea submersibles out of a sphere or spheroid because you don't have this failure modes.

It isn't surprising it failed. They were strong claims that the company did do enough test, rejected safety advice and even had the CEO claim that at one point the titan wouldn't be able to reach the titanic because it (a model maybe?) had experience a pressurization failure. To say nothing of the materials they were using.

Just comically bizarre that anyone involved in the project thought it would somehow survive let alone be safe.

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