Tourist mini sub missing off titanic

[pwd72s]

Originally Posted by otto_kretschmer

here is a retired sonar girl who's 2nd career is a youtuber



according to the chief (aaron) this craft was made from carbon fiber with a titanium hatch

my opinion is just as good as anyone here but..

I am a Navy veteran, I was on a submarine, I did get a BSME after I got out, I have some design experience in composite materials, and I have played around with carbonfiber and fiberglass making parts for my motorcycles

I would never ever never get on board a submarine made out of graphite reinforced plastic, aka carbon fiber. No no no no no....

The basic structure in compression is probably sound but what about all the joints and fasteners that are needed to make the craft? O-ring grooves, threaded fasteners in the hull?

No Effing Way squared

Just watch the video, guys...

[HobieMarty]

Sounds like this whole thing was doomed from the very first thought Stockton Rush had about building a submersible.

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[sc_rufctr]

... Thankfully some good news!

3 hr 26 min ago
Banging sounds heard during Titan search Tuesday, according to internal government memo

https://edition.cnn.com/americas/live-news/titanic-submersible-missing-search-06-20-23/index.html

[otto_kretschmer]

Originally Posted by unclebilly

But look at this other photo…

Why are there dents like that in the hull liner?

That's probably not the hull but insulation. There will be condensation on the surfaces from moisture in the air. The seawater temp will probably be in the 40s that far north.

I had a nuke friend talking about walking thru knee high fog when he was on the engine room lower level watch while on a patrol somewhere where its cold.

[otto_kretschmer]

Its depressing news. Maybe they're alive sitting on the bottom and can't surface or maybe they're caught in a net. Its happened before.

I like visiting submarines when I go on road trips. Most of the time its a WW2 fleet boat but I have seen the Trieste.



https://en.wikipedia.org/wiki/Trieste_(bathyscaphe)

The Trieste is old. The pressure hull is a welded titanium sphere. Buoyancy is controlled by a combination of tanks full of gasoline and some kind of lead or steel shot ballast.

If you run into a problem and want to get to the surface you release the shot and up you go. The gasoline tanks see sea pressure. Gasoline is lighter than seawater but is incompressible since it is a liqued.

Why this guy wanted to reinvent the wheel is beyond me.

[berettafan]

We toured that sub docked in Manhattan a few years back. I got panicky as heck the further we walked into it. Can not imagine the balls it takes to do this trip. Nor the feelings these people must be enduring.

I would imagine the builder is fully aware his life is ending and no help is coming.


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[The Synergizer]

If the other's haven't beat him to death already.

Originally Posted by berettafan

I would imagine the builder is fully aware his life is ending and no help is coming.


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[The Synergizer]

This is interesting

[unclebilly]

So they may have heard banging on 30 minute intervals and are redeploying the search equipment to where the banging sounds were detected. I hope this is the right strategy. Certainly if they are drifting around in the water column this will get the searchers closer. If they are at the titanic, this won’t help.

I’m not sure they have an ROV capable of reaching the titanic on scene yet (and may not in the next 24 hours). If they have, I’m sure we would have heard about it.

[Chocaholic]

Watched the Navy guy video. Lots of speculation with no real understanding of their actual program. Example…he said he liked to hire young, bright people, but didn’t say he did so exclusively as the video suggests. The Navy guy just took public information and assumed the worst when other information was unavailable. That’s no basis to jump to calling the guy suicidal or a murderer.

[VenezianBlau 87]

So, the ballast tanks are on the sled? If so, how would they have blown the tanks and risen? Or would they have metal shot ballast on the hull they could release like Trieste?

[911 Rod]

They have heard noise now.
I'd like to see the look on the crew's faces when you hand them little metal hammers as they enter the sub.

[craigster59]

I just can't understand how and why someone would pay an extreme amount of money to get on what seems to be a poorly assembled carnival ride at best.

Are they really that interested in an old sunken luxury liner or do they see themselves as the global explorers and adventurers of the past like Amundsen, Peary, Shackleton, etc. looking for some tales to tell at cocktail parties?

Getting in a tiny sardine can to plunge the depths isn't my idea of a good time, but then again, I don't have $250k lying around to spend on a whim.

[stomachmonkey]

Originally Posted by Bill Douglas

Quite literally. The sub wouldn't have toilets on board, and someone would have had to take a dump by now. Especially that Pakistani guy. Imagine the stench.

It's got a toilet, as rudimentary as it is.


Dawood lives in the UK and reportedly lived in Canadia for a month before the dive so his diet will reflect that.

And regardless, given the circumstances the comment was uncalled for.

[cockerpunk]

Originally Posted by craigster59

Are they really that interested in an old sunken luxury liner or do they see themselves as the global explorers and adventurers of the past like Amundsen, Peary, Shackleton, etc. looking for some tales to tell at cocktail parties?

once you've made/inherited a few billion, you gotta have something to be cooler than your new friends right? i herd one of the guys on the sub has been down into the Marianas trench.




these guys are dead. they might be banging on something, who knows, but they are dead. the notion that someone is going to be able to go down there and drag them up, is basically impossible. a rescue mission would be just as dangerous as the original mission was, if not more so. and there would be no way in the coming to hours to connect to them, and drag them up anyway. and remember, you gotta drag them up slow, or they will explode on the way up (the bends). its like a 5-6 hour trip up alone.

[unclebilly]

I don’t think they will get bends (I’m not an expert on this). The pressure inside the sub should still be atmospheric. I’m puzzled why they have ships on the scene with baro chambers.

I agree that there doesn’t appear to be a plan to catch the submersible and retrieve it. I gotta think an ROV could attach something to it and bring it to surface. Once there, perhaps they invert it so they can get the people out (if they are still alive).

[masraum]

It would be great if they were saved. It's surprising that folks think that there's evidence of them being around and alive. Now the race is on.

The logistics of a save are mind boggling.

The whole thing seems pretty insane.

I'm in IT, and work for a company that has a truly international presence with data circuits all over the world. For circuits between North America, Europe, and Asia, if there's an issue, it's occasionally a cut/break at the bottom of the ocean. When there's an "undersea cable cut" it usually takes at least 3-4 weeks to fix. Often the first 1-2 weeks is for one of the few (only a handful like 5-10) of the boats that have the capability to get to the spot where the cut is. Once they get there, a whole new slow process begins.

Traveling on the water isn't fast. Finding a sub in the water and then getting it to the surface is not likely to be fast. It's not like there are ships with appropriate ROVs onboard all over the world all of the time.

[masraum]

Originally Posted by unclebilly

I don’t think they will get bends (I’m not an expert on this). The pressure inside the sub should still be atmospheric. I’m puzzled why they have ships on the scene with baro chambers.

I agree that there doesn’t appear to be a plan to catch the submersible and retrieve it. I gotta think an ROV could attach something to it and bring it to surface. Once there, perhaps they invert it so they can get the people out (if they are still alive).

I wonder. I know that the pressure in an airplane changed a bit with altitude, but not a lot. I wonder if a sub does something similar, small increase (but < 1 atm). My dad spent some time on submarines (nuclear fast attack) but I don't remember that coming up. He was pretty tight lipped about what he did.

[911 Rod]

There is a reason military subs don't even go to 10% of the depth that they are at.

[sc_rufctr]

Where's Seahawk? We need some input!