Would death by implosion of a submarine past it's crush

>>33066498
*its

>>33066498
Its like the kids joke, what's the last thing to go through a bug's mind when it hits your windshield?

His butt.

that thing implodes in nanoseconds. The massive pressure changes would instantly render the squishy occupants into puddles of gelatinous goo.

Never work in a machine that can kill you if they don't take the trash out right.

>>33066498
>Would death by implosion of a submarine past it's crush depth be instantaneous?

So long as the part you were in actually crushed.

>>33066498

It depends on what part of the submarine you're in. If you're in the part of the submarine where the initial breach occurs, then yes it would be damn near instantaneous. Otherwise, it would only be semi-instantaneous.

>>33066667
You're a joke, kid. It's crushed when it goes past it's limits. It's not like it instantaneously achieves critical mass and vaporizes everything in a 1 mile radius.

>>33066769
no, its not vaporizing anything except what's inside it. humans don't handle that kind of pressure shift without instadeath. Crush depth is at a pressure of 75 atm or so for modern seawolfs. you wouldn't have time to think about if it hurt or not.

>>33066769
Look up the Byford Dolphin accident for an example of what rapid pressure changes (in this case depressurization) can do to the human body.

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>>33066969

https://en.wikipedia.org/wiki/Byford_Dolphin#Diving_bell_accident

>Subsequent investigation by forensic pathologists determined Hellevik, being exposed to the highest pressure gradient and in the process of moving to secure the inner door, was forced through the 60 centimetres (24 in) in diameter opening created by the jammed interior trunk door by escaping air and violently dismembered, including bisection of the thoracoabdominal cavity which further resulted in expulsion of all internal organs of the chest and abdomen except the trachea and a section of small intestine and of the thoracic spine and projecting them some distance, one section later being found 10 metres (30 ft) vertically above the exterior pressure door.

>>33066769

Properly engineered structures are designed so that when they fail from loading, they fail everywhere at once.

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>>33066498
Submarines have regulator valves that allow water pressure to be equalized before it does any major structural damage.
The submarine is never just gonna implode, it would fill with water and everyone would drown before the pressure difference would cause any damage to the structure.

>>33067033
And that was only 9 atm.

>>https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)

>>According to Rule the SOSUS data indicates an implosion of Thresher at 09:18:24, at a depth of 2,400 feet (730 m), 400 feet (120 m) below its predicted collapse depth. The implosion took 0.1 seconds, too fast for the human nervous system to perceive.

basically the ship's interior goes from 15psi to about 1100psi in the time it takes you to blink. Soggy sausage is all you're gonna have left.

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>>33067033

>>33067174
>they did this so the sub could be recovered, dried out, refitted, and recrewed

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>>33067033
>basically this

https://www.youtube.com/watch?v=L4_-rVenLVs

>>33067174
>instantly filled with water at 75ATM
>Implosion in fractions of a second
>crushed before you drown

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>>33067265

>According to newly declassified information, the Navy sent Commander (Dr.) Robert Ballard, the oceanographer credited with locating the wreck of RMS Titanic, on a secret mission to map and collect visual data on both Thresher and Scorpion wrecks.[15] The Navy used Ballard's search for Titanic as a screen to hide the mission. Ballard approached the Navy in 1982 for funding to find Titanic with his new deep-diving robot submersible. The Navy saw the opportunity and granted him the money on the condition he first inspect the two submarine wrecks. Ballard's robotic survey discovered that Thresher had sunk so deep that it imploded, turning into thousands of pieces. The only recoverable piece was a foot of marled pipe.[16] His 1985 search for Scorpion revealed such a large debris field that it looked "as though it had been put through a shredding machine." Once the two wrecks had been visited, and the radioactive threat from both was established as small, Ballard was able to search for Titanic. Due to dwindling funds, he had just 12 days to do so, but he used the same debris-field search techniques he had used for the two subs, which worked, and Titanic was found.

>>33067174
>>33067315
>>33067488
So I guess the pressure difference would instantly crush anything organic, providing a very quick death.
But would the structure of the sub be entirely crushed as well? I figure that once the weakest point of the hull fails the water pressure would be equalized, which should keep the majority of the structure largely intact?
I originally imagined the actual structure caving in and crushing everyone, not the water pressure crushing them

>>33067608
Well according to
>>33067488
>His 1985 search for Scorpion revealed such a large debris field that it looked "as though it had been put through a shredding machine."
The sub fucking vaporized

>>33067292
That makes alot of sense in a horrifyingly pragmatic sort of way.

Of course I guess burning chemicals to launch tiny pieces of metal out of tubes into people is similarly pragmatic.

https://www.youtube.com/watch?v=Zz95_VvTxZM

>>33067769
why?

>>33067769
this one has slow-motion interior shots at the end. i can easily imagine it to be a submarine interior. horrifying.
https://www.youtube.com/watch?v=0N17tEW_WEU

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>>33067608
>>33067488
I've done some research, and it appears that the first point to fail is usually the front.
However, the subs are constructed in sections, which allows for multiple implosion points across many points on the structure.
Once the outer hull is compromised, the many smaller sections of the inner hull will follow, along with the various air and gas tanks.
All of those sections would create quite a bit of debris, but I think that the overall structure of the outer hull would still be recognizable.

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>>33067833
another interesting pic

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>>33067636
>The sub fucking vaporized

Not really correct. Most of the pressure hull imploded, but the bow, stern, and sail are relatively intact and were identifiable pieces of wreckage.

>>33067313
but that's just one atmosphere

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submariner here, it's less than 1/10 of a second. its faster than the human body can register. it's also all at once not in sections. AMA I guess as long as it isn't classified

also this guy >>33067174 is a fucking idiot he has no idea what he is talking about.

>>33068283
>submariner here
Is is spoopy to be in a long metal tube hundreds of feet below the surface of the ocean pissing in the face of God daring him to do something?

Friendly reminder that Delta P is your worst enemy

https://www.youtube.com/watch?v=AEtbFm_CjE0

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>>33068298
eh you get over it and you get paid more too!

>>33067769
>>33067817
That oil car is killed by a pressure differential of one atmosphere, 15 psi or so. Here's the hard numbers to remember - that's 15 pounds of force on literally every square inch of that sub, per 32-33 feet of depth. Easier numbers to work with, that's 2160 pounds of force per square foot. Per 33 feet. At 2400 feet...that 73ish atmospheres ranks up 157,680 pounds per square foot...or about 77 tons. Imagine a fully-loaded M1A2HA balancing its weight on your one-square-foot face.

How big is the sub? Well, very poor models of it using a cylinder 279 feet long and 32 feet wide give us a surface area of 29,656 square feet...round it off to 30,000 square feet for simplicity and that's a total pressure of 2.3 million tons of water trying to crush the sub when it hit 2400 feet.

That tank car, by comparison, failed catastrophically with 1872 tons of pressure (assuming 12x40 dimensions) around it. That should tell you how insanely tough a modern submarine is...

>>33068345
Didn't a whale impact cripple a sub nose though?

>>33068379
the sonar dome and the pressure hull are two very different things

>>33068283

It's weird for me to think about someone choosing to live in a tiny, cramped tube without sunlight for long periods of times. I guess we are on 4chan though.

>what country?
>what kind of sub? (nuke?)
>how long ya been doing it for?
>do you enjoy your average day? what's it like?
>are you lovers with your bunk mate?

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>>33067033
Fuck that shit.

>>33068283
So what's the protocols for mutiny and in the event that fails a rogue sub?

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>>33068379
What
>>33068392
said, as well as the demonstration in the video from the Mythbusters. As long as the surface of the oil tank car isn't damaged, the circular shape means that all that air is pressing equally inwards, in all directions. As soon as it took that big dent, there was a structural weakness that compromised the circular structure, and...blort.

That said, sonar domes in the nose of the ship are not part of the heavy pressure hull, and are as close to sonically transparent as it can get. Notice how thick the bulkhead behind the dome is here....

>>33068425
Obviously you get to be attacked by a Soviet attack sub and have a person inside your sub be a plant of the government (protip: the cook)

>>33066498
No, it takes a horrifying long time, depending on where you are on the sub.

1 part overpressures and fails, if you're standing next to it you get instagibbed, otherwise you are subjected to the horrifying sound of tearing metal, massive changes in pressure, and/or drowning while being crushed.

I mean, I said horrifyingly long time, but it's probably under over a second if you're in an area that fails. However, subs aren't one uniformly connected piece, and if overpressure is likely, they'll probably seal the bulkheads, which, if you are on the other side, will probably give you enough time to realize you are about to die horribly before another section of the ship fails.

http://www.uboataces.com/ref-submarine-sounds.shtml

www.uboataces.com/sounds/submarine-sinking-2.wmv

Note that this WWII tech.

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>>33068475
...and here's a Soviet Yankee-class (I'm assuming being dismantled), where you can see the outer 'skin' of the ship and then the reinforcement structure surrounding the pressure hull itself.

Hell of a piece of hardware.

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>>33068529
how the fuck do you perform maintenance on something like that.

>>33068597

You just run it as long as it runs and then ditch it.

>>33067904
Wow, look how the pressure affected the skin of the rudder elements. You can see the strings

>>33068528

That second one always scares the hell out of me no matter how many times I listen. Fuck that noise.

>>33066498
Pretty much. The stern of the USS Scorpion slammed forward crushing the machinery spaces and forward control room to less than 6 feet in 3/10th's of a second. The atmosphere also ignited very briefly too during the compression. 3/10 th's of a second, about the blink of an eye.

The USS Thresher clapped inward then exploded outward into millions of pieces. No large recognizable hull sections survived.

I couldn't imagine going through that.

>>33068529

this makes me sad for some reason

>>33068724
>>The atmosphere also ignited very briefly too during the compression.

>> The operations compartment was largely obliterated by sea pressure and the engine room had telescoped 50 ft (15 m) forward into the hull by collapse pressure, when the cone-to-cylinder transition junction failed between the auxiliary machine space and the engine room.

Assuming she was at a similar crush depth as Thresher at 2400 feet, that's a 73:1 compression ratio. A high performance diesel might run 20:1 or a little more; it basically turned the submarine into a one-cylinder two-stroke engine. Once.

>>33068724
>uss thresher
Tragically apt

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>>33068788
>it basically turned the submarine into a one-cylinder two-stroke engine. Once.

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>>33068788
That's fucking intense

>>33068597
VERY carefully

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>>33067033

>>33066962
>modern seawolfs
You mean the Jimmy Carter? We only made 3 Wolfjobs.

>>33068379
>Didn't a whale impact cripple a sub nose though?
Sea Hull != Pressure Hull

>>33068392
Does the Sea Hull provide some partial pressure relief to the Pressure Hull?

>>33068529
Soviet Navy - we give "cramped" a whole new meaning.

What a cramped mess. Imagine you'd have to do fire drills 300 feet below. Good night.

>>33068788

anyone pretending to not use what they mean of who they aren't, especially when they are in the not or the word

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>>33068788
>It basically turned the submarine into a one-cylinder two-stroke engine.
>Once.
no

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>>33068528
>Large Object pass by

question to submariners (if any):
what you can do if something attaches itself to the hull and hinders mobility, like debris, fishing nets, magnetic mines that failed to detonate and... sigh... gigantic squids?
you have surface to deal with them, get towed?

>>33068528
WWII
Watertight bulkheads don't really help at depth, and aren't really used anymore. There might be one.

>>33070227
Yes.

>>33071332
Subs have been caught on fishing boat cables. The boat is in more danger.
Mines are a kill; submarines have very little reserve buoyancy.

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>>33071332

One of the more infamous IJN submarine war crimes was the tying of about 60 Indian merchant seamen to a long rope, then attaching it to the hull of submarine I-8 before submerging to drown them.

Not sure if a string of poo-in-the-loos would hinder mobility though.

>>33066667
>that thing implodes in nanoseconds
No

>>33071498
I suppose it only would cause trouble if the rope and corpses got to the propeller.
also, fuck those crazy japs, that was fucked up, if you want them dead, just leave them there

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>>33066667
No
>>33066684
Still no
>>33066755
> Semi instant
Maybe? Would still be scary and shitty and a really fucked way to go. Better than dying in the Kursk, not as fast as getting turned into street art in Hiroshima
>>33066962
Yes, you would. It's a submarine getting crushed, not you directly.
>>33067033
Not the same at all, yes, pressure is a hell of a drug, but being in a crushed section of sub isn't going to play out like that.
>>33067174
This guy is also wrong
>>33068283
Civilian engineer here, worked on subs before, I was under the impression that a crush is mostly gradual because of the superstructure of the sub? Reluctant to believe alot of what u say, not because I doubt your a submariner, but because military guys always seem to think they know everything despite the glaringly obvious fact that the private sector does just about everything better, and just because you work on a sub doesn't make u an authority on all things related.
> He could be a cook
>>33068724
Yea, if you get crushed you get crushed. I would imagine it would be like a bad car accident, could be instant, could take a few min.

>>33067033
reenactment

https://www.youtube.com/watch?v=AMHwri8TtNE

>>33068311
There's a book called 'Descent into Darkness' about the salvage divers who raised the ships after Pearl Harbor, it's amazing they only lost a few Navy and civilian divers in the process.

>>33071753

Is he okay?

>>33071771
Im sure he made a total recovery

I enjoyed this one as well.


https://www.youtube.com/watch?v=Rh6aQ51b_ZQ

>>33072021
looks like the cunt did it on purpose.

>>33072021
that ROV operator is a dick

>>33072051
Yeah... so?

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>>33066498
It would be extremely messy

>>33072371
What the fuck

>>33072717
That is why you dont open the door to a diving bell at 9 bar. Google byford dolphin.

>>33072717
see
>>33067033

>>33068283
>it's also all at once not in sections
actual Sub wrecks disagree with you on this

>>33072730
>>33072750

Yeah i already had seen but still i somehow wasnt expecting it to be so......bad

Dont think i want a submarine anymore, or to be anywhere near a preassure chamber

>>33072371
Oh fuck yes I've always wanted to see photos of the aftermath of the Byford Dolphin

>>33072371
for you

>>33072793
I had a chance to work in a hospital, essentially as an orderly for the hyperbaric chamber. The obvious use of it was to help divers with the bends (they even had pilots from a nearby AFB come in for high altitude ejection training), but mostly it was wound care. Putting people in the chamber with high pressure and 100% O2 helps woulds heal faster. You can't bring in any metal, or anything that may possibly make a spark, since the entire chamber was essentially a giant fuel-air bomb. It's pretty intimidating when you actually started thinking about it. Yet on multiple occasions patients would try to sneak something in, cell phone, etc.

>>33066498
Can I become an MM on submarines on a four year contract?

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>>33070166

>>33072371

Did he make it?

>>33072912
How much faster and at what pressures? I live near an oxygen supply and I've been wondering what I could do with it.

>these experts posting all of these opinions
How the fuck would you know the answer to this, exactly?

>>33071751
>3/10 of a second
>could be instant, could be few min

I don't think you're an engineer based on that retardation right there. Seventy three atmospheres worth of pressure outside of you, one atmosphere inside of you. If you can't understand the basic fact that that will kill you faster than a neuron can send a signal to your brain you're positively retarded.

>>33072764
Anon, do you for some reason believe the connection between interior bulkheads and the hull is able to resist anywhere near the same pressure as the hull itself, at a 90 degree angle to its connection to the hull? Even if only one part of the sub crushed, the rest would be annihilated very quickly as the interior bulkheads were separated from the hull and forced away from the crushed section. Hell, if it was strong enough to crush the hull, which is a cylinder, what makes you think the pressure can't force any thinner weaker barrier out of the way, literally near-instantly?

>>33073532
By not being a dumbass, anon. The pressure hull is uniformly the strongest part of the submarine by a lot (excluding maybe the pressure vessel of the reactor), if it gets squish, everything inside does too. At 70+ atmospheres, that would happen in a way that could be described charitably as extremely fast.

>>33066498
You would feel an increase in pressure proportionate to the rate at which pressure increases.
ie; if you descend at a rate of 10 ft per second you will feel an increase in pressure proportionate to that rate of descent.
So, really it depends on how fast the pressure increases, and if it was gradual, you would feel it long in advance.

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>>33067313

Jesus


>>33068528

>Sounds more terrifying than any horror game I've seen

>>33067033
OMG did he die

>>33071751
The OP was asking about exceeding crush depth, not the end result of a fucking leak, asshole.
Implosion at 2500 feet is as violent as explosion.
And a cook with dolphins probably knows more about this than you.

anyone remember the sub part of World War Z? Living in a huge nuclear sub while circling the earth under the waves sounds comfy as fuck.

>>33070145
If you look closely, you'll see that the passageways and maintenance accessways are stuffed with scrap and removed piping. There's even a dumpster on the top deck. I think that's just the ass end engineering section aft of the reactor section (which was probably cut out and decommissioned/buried in a deep hole/dropped in the ocean somewhere) stuffed with more non-radioactive scrap from the reactor section and areas forward and set aside for picking apart/recycling when they get around to it.

>>33073690
Yeah, except the thing called the hull of the submarine which keeps you from experiencing external pressure change.

>>33073763
>Living in a huge nuclear sub while circling the earth under the waves sounds comfy as fuck.

no it doesnt

>>33071751
>Civilian engineer here, worked on subs before, I was under the impression that a crush is mostly gradual because of the superstructure of the sub? Reluctant to believe alot of what u say, not because I doubt your a submariner, but because military guys always seem to think they know everything despite the glaringly obvious fact that the private sector does just about everything better, and just because you work on a sub doesn't make u an authority on all things related.
If you can't do the relatively simple ballpark catastrophic failure timeline on a 2,400+ft depth hull collapse, you're about as much an engineer as I am a faster than light intergalactic freight trucker.

Not one fucking thing happens "mostly gradually" at roughly 1,052 psi pressure differential container failure, in any failure mode.

>>33066498
imagine you're holding a empty soda can. Slowly squeeze until you begin deforming the can.
Congratulations, that's what happens with a submarine going too deep.
Now speed up crushing the can to simulate a faster rate of descent for the sub.
P.S. OP, you're retarded.

>>33072371
Wtf did they die from this?

>>33071751
>Yea, if you get crushed you get crushed. I would imagine it would be like a bad car accident, could be instant, could take a few min.
What the literal fuck are you talking about? Being "crushed" in a "bad car accident" does not take minutes. The damage is done in tenths of a second per distinct impact. You might take a few minutes to die, but the damage is done very very quickly.

The difference in this case is that a car accident leaves you in breathable atmosphere and survivable atmospheric pressure once the impact/injury is done. The pressures at collapse depth for a submarine are physiologically not survivable for the human body breathing air. Partial pressure of O2 for a diver at 217ft is 1.6 bar, which is generally considered the threshold for unacceptable risk of oxygen toxicity. Subs have crush depths about ten times that, and that's just one of the many, many physiological issues at those pressure levels even for technical divers descending in careful stages over days and using exotic breathing systems.

>>33066498
You'd die before your nerves could inform your brain that you're in pain.

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>>33073925
>you're about as much an engineer as I am a faster than light intergalactic freight trucker.

>>33073926
Change your scenario to a can full of 1 atm of air, and which is so tough it can't be crushed until you squeeze it with 2.3 million tons of pressure, and your scenario is correct.

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>>33067818
>>33067818
>>33067818

>that interior view

jesus christ how horrifying

>>33068788
>it basically turned the submarine into a one-cylinder two-stroke engine. Once.

That's a very neat way of putting it.

>>33074042
I am a highwayman and I will go on and on and on.

>>33074549
Ill fly a starship.... ACROSS A UNIVERSE DIVIDE

>>33067313
the worst part
i liked the alien baby, fuck distephano

>>33068311

shit anon this is fucking top tier spooky material, thanks a ton

>>33072912
>putting poeple in the chamber

>>33072730
And just to hammer my point home earlier, that's 9 atmospheres of pressure. Thresher failed in the low 70s, I would assume Scorpion died at a similar point.

>>33066498
it would only be nearly instantaneous if you were within a few bulkheads of the breach.

People on the other side of the boat would die much slower and painfully.

>>33075809
>People on the other side of the boat would die much slower and painfully.
Not at collapse depth. When the pressure hull catastrophically fails in any way while at or near maximum possible pressure load, the entire thing goes like someone stomping on a beer can. Bulkheads within the pressure hull would do almost nothing to slow this process due to both the geometry of their construction and the number of points at which they are pierced and weakened by hatches, cableways and other throughputs.

>>33075809
Yeah instead of instant it probably took 4 nanoseconds instead of the 0.1 nano seconds

>>33073724
>OMG did he die


I was just about to post that

>>33075809
This press can exert 6,300 lbs of force and can shape meter thick hot alloy steel like butter: https://www.youtube.com/watch?v=M6prupgPNyc

A column of seawater 2,400ft deep exerts roughly 1,067 pounds per square inch depending on temperature. Over the hull of an entire submarine like the Thresher (napkin math here, roughly 4,270,555.5 square inches in area) that's roughly 4,556,682,721.9 pounds of total pressure on the submarine hull. Four point five BILLION pounds. 2.3 MILLION tons. Roughly the total pressure of 23 entire Nimitz class aircraft carriers' worth of displacement.

If you think anything happens slowly at those force levels when you're dealing with container failure, you're a complete retard.

>>33076078
>6,300 lbs
Jesus what a brain fart. I meant 6,300,000 lbs. My bad. This is why we don't drink and math, kids.

Your body is a lipid in a highly compressed air medium. Diesel.

This video shows how fast the implosion happens. https://www.youtube.com/watch?v=JsoE4F2Pb20

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>>33076489
the picture is of the USS Scorpion to give an idea of size

>>33076562
sorry, this was the implosion event, showing how fast it happens

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>>33076574
this was the boat with its crew to give an idea of scale

>>33076562
Damn. Nice get. Is that from one of the USN reports?

If I read that right, roughly 1/5 of a second before every person on board was dead.

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>>33076583
This shows the stern of the scorpion collapsed like a telescope into the operations compartment

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>>33076624
so the back half got sucked into the front half

>>33076613
I don't the actual source, went looking for some quick answers on the web. I remember see these in sub school. Scared the crap out of me

>>33073623
you're right, for some reason I was thinking about sub losses of all types and then thinking that was crush losses

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OP here, thanks for all the replies.

My question sounds stupid in retrospect but here's what prompted it, from pic related re: the Thresher;

>A crushing slab of seawater slammed into the ruptured pressure hull, tearing watertight bulkhead doors from their hinges like scraps of wet cardboard. The air inside the hull was instantly compressed to 750 pounds per square inch. Thresher’s hull became a huge combustion cylinder, the sea a piston. One hundred twenty-nine men were killed within seconds by the invisible blast of the superheated air. Diesel fuel and lubricants exploded. The thick curved flanks of the pressure hull were shredded. Thresher erupted like a giant depth charge.

It's obviously dramatized but "within seconds" vs the fraction of a second I had assumed made me curious.

>>33076816
Good discussion. Served on the same class as thresher, good boats and manned by great friends

>>33076816

Diesel fuel exploding seems more myth than reality, another being leaks powerful enough to slice a man in half. I think it's just a way of describing something so violent that is otherwise beyond regular human perception.

>>33077067
Do you not know how a Diesel engine works? How about a wtaer jet cutter?

>>33077112
I doubt the diesel would have the time to both oxidize and explode. A leak strong enough to cut dudes in half is a powerful mental image, but again the time frame between that happening and the hull collapsing would make it an afterthought.

>>33066498
Most theorize that the hull of the sub is breached some where and then the massively high pressure water then Burt's every cabin one after another and considering that the inside of the boat is a lot weaker than the outside it just knocks out the cabins one by one in a rapid manner.

>>33071332
f=ma

submarines weigh in the tens of thousands of tons, there isn't generally anything that hinders mobility

>>33072978
nuclear, no, conventional, yes

>>33077522
So Diesel engine cannot run at 5000rpm. Thanks for telling us that

>>33068283
Hello Mr Submariner, may I ask how small and object the mangled submarine would be post-crush?

>>33068283

So what's the deal with those fancy-schmancy "flank sonar arrays" anyhow? Because I can't even find the unclassified guesstimates as to why they exist or how they're better than bow arrays. My first instinct was that they're for parallax; i.e. bearing rates from the nose compared to bearing rates from the ass end; wherever the lines cross, that's your range. But it occurs to me you could do the same with much greater parallax with the fat line + bow array so IDFK what is this wizardry

Also has anyone said anything publicly about how the Navy was able to make a fucking anti-torpedo torpedo hard kill WORK? Seriously how the *fuck*

>>33078157
so if you run into a 20 mile long fishing net you just...keep going?

>>33078193
I'm no submariner but the crushing would stop once pressure inside and outside equalized, if there was no secondary explosions from ammo, prolly going to have a recognizable wreck.
therefore the question is what are the odds of a explosive pressure breach causing secondary explosions

>>33079059
Hmm interesting, thanks mate

>>33078190

Thresher was nuclear but carried diesel for the backup motor.

>>33078190

Thresher was nuclear but carried diesel for the backup motor.

>>33071332
A nuclear submarine running into a fishing net generally results in the fishing boat sinking and the submarine surfacing some time later to remove the netting. Magnetic mines aren't actually magnetic, they don't actually stick to the boat they just have magnetic influence detonators.

Things that can actually cause a problem are things that can become wrapped around the screw, torpedo guidance wire for example (One boat I am aware of had over 30,000 yards of guidance wire stuck in its screw).

The captain thought that was cool, squadron did not agree.

>>33079101
Also a submarine is made out of metal, a squid is not made out of metal, the submarine beats the squid.

>>33076816
It makes sense that the air would heat because the rupture is a nearly isochoric process, but would it be enough to ignite diesel/lubricants? I imagine the large heat capacity of seawater would prevent the air from reaching those kinds of temperatures.

>>33068283
Have you been the poor sod that they force to strip down into nothing (except undies and a rope for convenient body extraction) and throw the switches in the generator room?

I heard that job's loads a fun.

>>33067177
>only lol9atm
>not superior 45atm stawpin powah

>>33079059
NO NO NO
Collapse depth results in an implosion, not a leak, fucktard. Stop answering questions.

>>33079739
No.
Do you know how compression ignition (diesel) works?

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>>33067033

>>33072371
F

>>33081351
implosion not explosion, if the hull is made of steel, not cinderblocks, the basic structure shall remain.
unless we have secondary explosions, then its fuck.
also identifiable don't mean mint condition, that shit will be frag, jesus.
we need a chart with damage ratio if we gonna keep discussing this.

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>>33081351
plus we need data on how fast and how deep the submarine was going, because its bound to get leaks before a catastrophic event, unless they are diving at a reasonable speed, instead of just slowly sinking.
not saying it has to go really fast, but there are ways to go down really slow, so leaks before explosion.
god, don't go full retard on me, I'm trying here

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>>33073560
what if I take more atmospheres with me

>>33081362
apparently not

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>>33066498
due to the change in pressure the air ignites and the crew actually burns to death.
look it up.

>>33082135
>slowly sinking

>>33082225
Try it.

>>33082855
>3/10 of a second or less
>burns to death
No.

>>33083016
uh, is not impossible when you have reserve buoyancy for that?
Im trying, guys!

>>33083164
>having reserve buoyancy
>anywhere near collapse depth
pick one and only one.

>>33076489
that was cool

>>33083191
so it goes from normal to catastrophic implosion.
I can live with that.
anyone has a list of colapse depth/subs?

>>33071753
rip crabbo :`(

>>33083218
Well, the steel is only so elastic. Once you exceed that elasticity, it breaks. That's it, it breaks, and now it's even weaker, but still under the same forces. SO it goes from being very slightly stretched to being crushed in one instant, and the failure spreads through the entire hull ridiculous fast, and the whole thing turns smol.

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>>33067818

>>33076094
>don't drink and math
But it's a lot more fun that way.

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>>33068788

>>33071751
>civil engineer here

Obviously not a good one. Fuck off with your meme undergrad degree and let the adults speak.

>>33076562
>From zero to an hero instantly
Glad I'm going air force.

>>33076624
Oh holy hell I never looked at it that way.

>>33082855
>due to the change in pressure the air ignites and the crew actually burns to death

That's not even possible

>>33068411
Bump for this

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>>33071751
I'm autistic and mommy left the computer password out: the post

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>>33068724
>American sub
>clapped

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>>33068788
>>> the engine room had telescoped 50 ft (15 m) forward into the hull by collapse pressure

>>33074711
hybrid baby was shit and you know it

none of the sneaky sneaky fastness of the actual aliens and relied on a highly inefficient reproductive cycle

only thing going for it was strength and it would get fucking obliterated by marines with pulse rifles for being so huge and slow

>>33079101
>The captain thought that was cool
Of course. He isn't the one that has to unfuck 30,000 yards of wire from an ocean blender

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>>33067033
>>33067313

>>33086792
Nobody on the ship did, non-ships force divers removed it all eventually, but squadron was infuriated that they weren't doing proper post launch guidance wire clearance maneuvers because it made them look totally retarded.

>>33068311
>Delta

Good vid. I ended up sharing it with a few others.

>>33076562

This should settle any and all disagreements when it comes to how quick a sub would break up during an extreme hull crush event. Mind you there are too many retards here who can't read or understand a plot

>>33070117

>Does the Sea Hull provide some partial pressure relief to the Pressure Hull?

No. The sea hull is flooded. It's just a shell, built around the pressure hull and used as mechanical support to carry and contain piping, tanks and whatnot, and to provide a smooth hydrodynamic surface over all that lumpy equipment that would otherwise cause drag as the submarine moved through the water.
In operation, the spaces underneath the sea hull are freely flooded with seawater, and are at an equal pressure to the seawater all around the submarine. There's small openings for water to enter and leave.

>>33072021

Hah hah hah, the ROV operator did that on fuckin' purpose!
"Guys! GUYS! Watch this."
*SHOOMP*
And then many beers were had.

>>33089104
I like all the people complaining about the murder of the shark.

Wikipedia says there is audio of the Scorpion imploding, anyone got a link?

>>33089542
I don't think the audio was released, but there is >>33076562 if that helps.

>>33089392

shark lives matter

>>33089392
not much a fan of sharks, but the guys was a dick.

>>33072051
>>33072076

What, for giving the shark a tap with a pipe? A shark which, if it had decided to have a go at the pipe or wiring, could probably have fucked things up?

Get to fuck you cunts.

>>33068724
>I couldn't imagine going through that.

Don't worry, it would go through you

>>33071753
That crab was killed because it was forced against the drill, which compromised its shell and made it crack. Otherwise it was fine at that pressure.

>>33067033
Instant deaths are hilarious to me. I burst into treats whenever I think of someone suddenly getting instantly and unexpectedly killed. Like, I literally go "HAHAHAHA GET REKT FAGGOT". I remember when 9/11 happened on the TV and I was just sitting there laughing at the thought of some office workers getting smashed by a fucking 747 until I nearly passed out.

>>33090262
Eggy

>>33090325
It's just my way of coping, I guess. Better to laugh than get mega depressed.

I want you to know that I don't feel the same way about slow deaths where people suffer. That's just sad.

>>33090349
I guess I get that. While death isn't necessarily funny in and of itself, the unexpectedness of a sudden death can be. It's like if you're reading a book and everything's normal and then the main character gets hit by a bus and the book ends.

>>33090180
yeah, that shark was clearly plotting some terrorist attack, just look at him, pure malice in a tiny fish body of evil. he totally deserved to have his ass sucked thru his gills, that bastartd!

>>33090925
Shark Internet Defense Force

>>33066498
Also known as death by Delta P

There's a gif of a crab walking across a pipeline with a 2mm hole, it just gets sucked into it like a vacuum.

>this actually kills the crab

>>33079851

Underrated

>>33068475
As an engineer, stuff like this gets me hard. Right now i'm trying to figure out how they manage to run wires and cables through that bulkhead without it weakening the pressure hull or some shit.

>>33068597
Its russian, you dont

>>33071498
There were a few cases of them picking up survivors, putting them on the deck with hands tied behind their back and then submerging. That was when they didnt bother to just machinegun them instead ofc

>>33092736
Just like for all spherical or cylindrical pressure vessels, the idea is to make the openings and cuts in the hull as few, small, and circular as possible, then reinforce the shit out of the hatch rims and hatch dogging mechanisms. As for cable runs through a pressure vessel, something like these fittings: https://southwest.swagelok.com/en/tech-resources/tech-tip-videos/tube-fittings-extreme-testing
or standard pressure vessel pass through fittings, or closed system fittings outside the pressure vessel.

>>33073763
You get to nuke China and live on a floating city like in Waterworld, so it does sound pretty sweet

>>33074365
>Muuuuuuuurphh

>>33068597
>Soviet Navy
>maintenance
kek. Pretty sure most of their equipment is designed so retarded conscripts who can barely read don't get to go anywhere near something important

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>>33070166

>>33079042
American SOP is to do a EMBT blow right under the resear-i mean fishing ship

>>33071751
>He could be a cook
And you could be a retard, and I think you are. You don't seem to understand how submarines work. Submariners have to become qualified on every system of the sub. At least know what it does and the basics of how to operate it, in cases of emergency. The cook on a submarine probably knows more how hydrostatics and fluid mechanics than an engineer

>>33093129
>if you caaaan't beeeee
>in the one you love ('s ass)
>RAM THE ONE YOU'RE WITH
>RAM THE ONE YOU'RE WITH
>RAM THE ONE YOU'RE WITH

I trust /k/ to take this one the rest of the way home...
https://www.youtube.com/watch?v=HH3ruuml-R4

>>33092975
Ooh, neato

>>33068379
The sonar domes of US submarines are made of glass reinforced plastic and aren't pressurized.

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>>33093258
As seen here on the good old san fran, the outer hull and pressure hull both stop where the sonar dome begins. The sonar dome is a single piece of GRP and isn't part of the hull at all, it can be removed via a crane.

If you happen to be hanging around Norfolk Naval Shipyard when there's a submarine in one of the drydocks you can usually find its removed sonar dome sat on a seemingly abandoned flatbed nearby, sometimes being painted by a lone black guy (all shipyward workers are black) with a paint roller and tyvek suit.

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>>33068283
I'm back i had a flight to catch

>>33071751
Actually Mr. Civilian engineer I operate the nuclear reactor on board the sub I'm a MMN1

>>33079778
That's not a real thing. Who ever told you that is a retard.

>>33078414
You can't find any info for a reason.

I'll answer any more questions I guess

>>33093328
>all shipyward workers are black
That's really because they're in Virginia.

>>33093503
Oh how we've fallen since the colonial era.

>>33090262
Goddamn I'm a psycho and even I think you're fuckin weird

>>33066498
https://www.youtube.com/watch?v=Zz95_VvTxZM

This is implosion with the inside being close to zero atmospheres, and the outside one atmosphere.

While submarines have one atmosphere on the inside, and 20 atmospheres on the outside at 200 meters.

It'll be over quick.

why is this thread still going?

>>33096575
Dying under water instantaneous is both terrifying and comforting

>>33090180
>3 foot long gill shark
>dangerous to anything mechanical
The only danger that thing could pose would be to the clean underwear of a sissy with a phobia.

Intentional waste like that is chidish.

>>33095083
Virginia has always had more darkies than whites.

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>>33090262

>>33096922
Yeah, someone could have fucked that shark!

>>33082120
STOP BEING STUPID.
Did you see the largest piece of the Thresher? The incoming wave shattered the pressure hull into small pieces.
You are shitting on every submariner that died ever.

>>33082135
Retard, the USS Thresher sank slowly until she reached CRUSH depth. Not LEAK depth, mmkay?
HY-80 steel yields at much higher loads than a soda can.

>>33076489
That girl sounds so fucking stupid.

>>33093350

how's the internet underwater?

>>33066667
there are so many void spaces and watertight bulkheads that basically no that wouldnt happen.

also crush depth is not a threshhold. pressure underwater (and the lack thereof at high altitudes) is continuous.

>>33089104
Hahaha
>Shoomp

>>33093059
>Implying this only applies to soviets the amerifat Navy is just as bad.

>>33093328
Most of the USN is black these days. My time on the carrier felt like a floating Detroit.

>>33100718
>watertight bulkheads
Those are weaker than the pressure hull. Once the pressure hull goes, everything inside goes too.

>>33101946
https://en.m.wikipedia.org/wiki/List_of_sunken_nuclear_submarines
https://en.m.wikipedia.org/wiki/Nuclear_submarine#Accidents
Cool story bro.

>>33066498
It would be extremely painful

>>33101946
Nice try, tovarish

>>33101997
UUUU

Due to the size of submarines and the time it would take for it to crush, the heat of compression of the air would cook anybody onboards lungs before they were crushed or drowned.

>>33100655
Nonexistent.

https://en.wikipedia.org/wiki/Extremely_low_frequency

>>33104009
No.
>>33076562

>be me
>be on submarine
>thing is a massive deathtrap
>exposed superheated steam pipes next to your face
>massive thousand pound pistons moving at extremly high speds
>signs of ruptures on the hull
>surface
>apparently there's a massive fucking storm
>fab buddy gets order to go up to repair it
>what the fuck.jpg
>buddy opens the hatch
>not 3 seconds later a plate gets ripped off the hull
>90mph winds send it flying like the buzzsaw blades in the movie Twister
>pings off the railing
>smacks buddy right in the face
>turns his nose into a 500 piece jigsaw puzzle
>he lets go of the ladder
>falls down
>tries to catch himself
>grabs one of those super heated steam pipes
>free brand tattoo of the pipe manufacturer on the palm of his hand
>lands on his head

To call him a disabled veteran would be putting it lightly. All in all a great working environment and fun job.

>>33105709

Btw, had the plate not gone vertical when it hit him, it would have cut the top of his head clean in half.

>>33105709
>If the enemy doesn't get you, the engine room will.

I bet more American sailors have died from asbestos related illnesses then from enemy action since WWII.

>>33105709
Wtf kinda sub was this? The Nemo's Nautilus?

>>33105760
>I bet more American sailors have died from asbestos related illnesses then from enemy action since WWII.
Not even close to true, but if it were the same could be said for surface fleet sailors, tankers, APC and halftrack drivers, artillerymen, anyone involved in flying or maintaining aircraft, anyone tasked to fight fires in any service, etc.

Asbestos was literally used in EVERYTHING.

>>33105788
I have not clue what it was supposed to be. I only know it's complete bullshit.

>massive thousand pound pistons moving at extremly high speds
my pasty scottish ass

>>33066498
This should be a general

>>33066667
>nanoseconds
Milliseconds maybe.

>>33066684
Once that water gets moving, it won't be stopped. As soon as one compartment fails the rest will have a cascading failure faster than your brain could process what was going on.

Never underestimate the power of a water hammer.

>>33067833
Once one section fails, you will have many hundreds of tons of water moving very quickly. No bulkheads will withstand that kind of force. Once one section goes, the rest will go one after another, blindingly fast.

>>33086086
Yeah, because nobody ever died instantly from being inside an airplane

>>33072371
That's actually a lot more intact than I always imagined it. Much less blood too. I expected it to look like a pile of strawberry jam.

>>33072912
Reminds me of an accident the Russian space program had:

>23 March 1961 was the tenth day of a 15-day endurance experiment in a low pressure altitude chamber at the Institute of Biomedical Problems in Moscow.[4] The chamber's atmosphere was at least 50% oxygen. Bondarenko, having completed work for the day, removed some monitoring biosensors from his body and washed his skin with an alcohol-soaked cotton ball, which he then carelessly threw away. The cotton ball landed on an electric hot plate which he was using to brew a cup of tea. The cotton ignited and Bondarenko tried to smother the flames with the sleeve of his woolen coveralls, which caught on fire in the chamber's oxygen-rich atmosphere.

Because of the pressure difference, it took a watching doctor nearly half an hour to open the chamber door. Bondarenko's clothing burned until almost all the oxygen in the chamber was used up and he had suffered third-degree burns over most of his body. The attending physician at Botkin Hospital, surgeon and traumatologist Vladimir Golyakhovsky, recalled in 1984 that while attempting to start an intravenous drip, the only blood vessels he could find for inserting a needle were on the soles of Bondarenko's feet, where his flight boots had warded off the flames. According to Golyakhovsky, cosmonaut Yuri Gagarin spent several hours at the hospital as "deathwatch officer" and Bondarenko died of shock 16 hours after the accident, less than three weeks before Gagarin's historic Vostok 1 first spaceflight.[5] Manned orbital flight program director Nikolai Kamanin blamed Bondarenko's death on the Institute's poor organisation and control of the experiment.[4]

https://en.wikipedia.org/wiki/Valentin_Bondarenko

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>>33068528
>www.uboataces.com/sounds/submarine-sinking-2.wmv

I'm a sub guy and fuck. lmao

>>33105809

>using simplified terms to allow the retards of
/k/ try to understand how subs are massive steel coffins

I mean it's not like marines or /k/ fags are intelligent people.

>>33086086
As submariners would say, there are more planes in the water than submarines in the sky.

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>>33106059
holy fucking kek

sometimes military humor gets the perfect mix of absurdity, cynicism and observation that you just can't get anywhere else.

>>33077522
Watch this:
https://www.youtube.com/watch?v=-39wmSBO2FM

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>>33106113
Ooh! I just bought a fire piston. It's wood encasing aluminum but still, it's fun as fuck.

>>33099376
Pic related.

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This is a submarine poast thread along with crushed sardine can talk.

This is the SSBN Florida a little before it converted to a SSGN and held 154 UGM-109 Tomahawk missiles. Pretty noice and aesthetic.

>>33072371
oh man is that his benis

>>33072371
Submarines, allowing you to devolve into a sea anemone in mere seconds.

>>33070166
ayy poster pls go.

>>33093258
Most aren't. Early Virginia boats actually have pressurized sonar domes because they aren't water backed. Newer ones (block IV, I think?) have water backed domes with reduced pressure hull penetrations.

>>33108477
>Early Virginia boats actually have pressurized sonar domes because they aren't water backed.
Dumbass. No. No entire sonar arrays are pressurized on any sub. That would make the transducers incredibly inefficient. They have to be in contact with the water.

The question is whether the actual structure holding the transducers, behind the sensors where all the wires are, is filled with water or air.

>>33108801
As I said, the interior sonar domes on early Virginias are pressurized (I.e. Air-backed) with the sensors on the outside of the dome. Newer Virginias are water-backed and therefore both the interior and exterior of the dome (with the sensors) is contact with water.

l2reading comprehension, dipshit.

>>33109186
>As I said
Nope. The post you responded to, here >>33093258, correctly pointed out that the bow portions of all USN subs are made of composites, and the compartment within is not pressurized. Only the machinery spaces inside the transducer mount see here >>33068475 were, until VA block III when even the inside of the array itself was designed to be open to water for ease of maintenance and a slight efficiency bump.

The anon was clearly referencing the actual bow hull of the submarine, not the array assembly itself. No need to get salty because you didn't understand what water-backed LAB meant.

Lets talk LOS diagrams /k/

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>>33108477
>>33109186
>gets super autistic
>is wrong
>gets told

if you're gonna be pedantic, best make sure you're right, there, m8y.

>>33109372
>someone conflates the sonar done with the machinery space behind the transducers
>calls them pendantic

I truly hope you understand the irony here.

>>33068525
kek
>>33068788
Smiling at myself at how fucking metal this is while also feeling sorry for the deaths of the crew.
>>33067313
>flesh rips away from skull entirely
>skull is left there for a moment before is decides "no fuck this I'm off to go kill satan or some shit" and fucks off into the darkness forever
Brutal

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>>33109975
Goddammit forgot pic on the revision

Where did you rack? Me bow, port side, other side of O2 vent and aft of knocker valves. You?

>>33106019
What is it with space vehicles and people burning to death, mang? Can't they simulate a vacuum so that they can use the
>fuck, I'm on fire, I should let the air out
tactic and be total badasses?

>>33109552
He literally said "sonar dome." There's no conflating that with anything unless you're a retard.

>>33067818
And that's just collapsing under one atmosphere, imagine 45.

>>33112189
*75

Here is thorough lecture about it

https://m.youtube.com/watch?v=R8mtldtidcc

>>33112859
The cuts in this are distracting and terrible.

>>33113735
Yeesh, yeah.

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It's ALWAYS crush depth.