Saturation Divers Live Under the Sea for Weeks | World's Strangest
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- Опубліковано 7 сер 2024
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I thought their main pod where they live just sat in the water. It's honestly a lot more comforting to know its sitting in the ship
I could never work as a diver, imagine if someone makes the mistake of opening the chamber, you're body would be instantly ripped apart... scary
@@booxwee3804 look up the diving bell accident. Only one person got ripped apart the others had less gory deaths
Homosexicle I don’t know... if there’s an emergency it’s not like someone can open the hatch. Doesn’t really matter... This job is really scary if you ask me.
Nah more boring. Underwater facility would've actually been more practical and cool. Like in the Abyss.
@@mrslinkydragon9910 yeah, literally, ripped/blown to pieces, it was awful, goodness, I'd be terrified to live in something like that, always knowing what can happen in an instant
Going to the toilet is always a massive loss of gas mate
MrSparkles how is it dangerous though??
@@slehcyo8223 if your sat on that toilet when it's flushed,... youre going to get your bowels removed. Through your ring piece.
beware the dreaded sea pickle!!
@@kf8575 and that has happened - in the early days.
I dont know why they bother with all that. Just tell the boys to pee into bottles and poop into bags or something. Still hygenic.
"im an saturation diver" - no one bats an eye
"im an astronauts" - panties reign, you're a national hero
same job, different densities
lol, except astronauts sit at the pinnacle of human knowledge, in their respective fields, and often in more than one
@@ajv336 so do deep underwater diver. sure, it may be cheaper to be a diver. fact is those equipment are still as equally to maintain
@Karl T this man just said astronauts and space aren't real lmao
@@dwnturn ok boomer
@@mr.mysteriousyt6118 shoot and a miss lmao
It's like being an astronaut...
Just without all the perks
Without all the perks..?! Being That Far under the sea, viewing and experiencing things 99% of the world only has thru the internet(or their dreams), knowing that every moment you're down there could lead to a discovery NO one else has Ever made...? Not to mention the cojones it would take to volunteer for such a formidable & treacherous career. And the discipline, sacrifice & well deserved respect they receive. That all sounds like plenty Perks to me, man!
You make more money than an astronaut.
They make 500k or more a year. Thats plenty.
airman The world is flat.
There are no perks because they are not in space look at the disparity between the iss and this decompression chamber they can't afford to make mistakes it's shows by how spartan the living area is etc. They couldn't risk a fire! No water near electronics here ! Unlike the iss bullshit! Folks when you wake up you can't unsee! !
I would be extremely paranoid about problems with the compression chamber. Imagine if it suddenly failed and you got blown to pieces.
He doesnt know the story where they lost pressure and one guy got forced through a hole the size of like a quarter
All fake rumors. Nothing would happen except that you would get the bends and hurt like hell for a day or two.
ua-cam.com/video/NeVwqfFSggA/v-deo.html here is the link if you want to know what happened, don't watch if you have a weak stomach though fair warning. It's not just rumors unfortunately
You’re a hell of a lot more likely to be ripped apart in a car accident. But I bet you’re not that paranoid while driving? People really don’t comprehend risk statistics
vin 950 the rumor was that someone went through a hole the size of a quarter
Damn, I couldn't imagine being cooped up in such a small place for a week. I'd go nuts.
You get used to it, and it does pay the bills.
Adam Sandaver Only if you're offshore and on sat, if not it's pretty mediocre pay
Do they have the WiFi password though?
You wouldn't go nuts, instead you would nut
A week?! They are in that thing for a month
What they don’t tell you is they fill ballasts with air to make the dive bell rise, but it’s the divers’ weight of their massive balls which causes the bell to sink back down again.
I honestly don’t know how they do it, and the immense danger involved, straight up respect for these awesome men
I like to think I'm a pretty calm person, but that place would give me so much claustrophobia I'd absolutely lose it within minutes.
As a society, we tend to admire Astronauts. But I have much more respect for Aquanauts. A lot can go wrong on the ocean floor. I have always had a respect for both *nauts, but we don't give nearly enough congratulations to Aquanauts, so good job all you who delve into the depths of our least understood environment!
the aquanauts can be reached in a few hours id guess... astronauts are in fuckin space.
ksiyaskid, they can't be reached in a few hours because of the pressure differential. If you need to get out of the pressure chamber in order to go to a hospital, for instance, it can take a week or more to depressurize.
Decompression takes approximately 3 days for every 100 meters of depth + 1 day... Record was 700 meter, so decompression took 22 days...
Don't you call them argonauts
Did not know they're called Aquanauts xD
a massive respect to these divers.
I heard a documentary on the swedish radio about the pioneer divers in the offshore bussines in the North Sea. They did tests on the divers in saturation. It was the same there. They were locked inside those steel coffins for about a month. The divers get mad and started to hallucinate and stuff. People flipped out. They interviewed a swedish diver who said that 21 of his diving colleagues did commit sucide in their later years.
Totally sick. But that was back in the 70:s
grimlund Vault-Tec testing gaz mixes on subject. Just another fallout shelter experiment...
What do you think any extreme job in its infancy years was a bed of roses? Every job that’s dangerous it’s rules and regulations for situations are written in blood.
They prolly didn't have any entertainment when they were off their shift
@@hollisjones6835 I know that they had a TV. But thats like it all.
And they dont had any internet back then.
@@hollisjones6835 each other was the entertainment 😉
I remember my first time going on a public scuba charter, we were going down to our lowest level at the time and me and my step brother watched a man go up in less than two minutes, and I remember immediately seeing how sick he got and how painful being bent looked.
Could you describe it if you don’t mind me asking? I can’t imagine what it’s like to witness it
Only reason to do that is if there’s no other option…like being attacked by a shark… I couldn’t imagine. Terrible way to go by the bends but it is survivable.
Why would they do that?
@@TsunayoshiSawadaTenthimagine slowly inflating into the stay puft marshmallow man. First your eyes grow to the size of baseballs and pop open like balloons. Then your body explodes at the softest points first, which is everywhere not covered by bones. The stomach and between the legs. Kaboom.
@@inezneal6917they prob had to poo
With 500+ feet worth of underwater pressure, if someone opened the diving bell on the surface, everyone’s body would just explode.
It's happened. Go read about the Byford Dolphin accident.
@@tnexus13
I regret looking that up
I'm not surprised.
Hope you still managed to enjoy cranberry sauce on Christmas day.
@@tnexus13
I haven't eaten or drank anything since I saw that horrific accident, which has and will scar me for life.
Well, definitely don't watch this mythbusters clip then.
ua-cam.com/video/pRC5R1jRO58/v-deo.html
The fact that their chambers are located on a boat makes me feel much much better and safer haha
Look up the Byford Dolphin accident it’s still dangerous.
no what if the boat capsizes
Honestly not for me, because that way you have a massive pressure difference to the outside. If the living quarters were on the ocean floor there would be no pressure difference.
I wonder if they have a psych evaluation before they get that job? It seems harder mentally than physically.
You really wondering if they have mental health exams for guys locked up for a month working on critical infrastructure of billion dollar rigs and are a vital assets of a nations's economy, safety, and environment. And although many are privately owned companies, many are also government or work as government contractors, all of this roughly would qualify them to been seen as strategic national assets. Yeah, drug test and a reference isn't all that's required here.
@@mtmadigan82 Anyone can go insane inside that box faster than we can imagine.
@@paumasabad1449 couldnt pay me enough
@@mtmadigan82 for real. 25 dollars an hour? Not in this life
@@knucklesskinner253 they make around $45K a month.
I’ve known about this any always wondered what would happen if they had to abandon ship, and guess what, they have thought of that, they have a pressurized life boat. The whole thing is so cool!
Nice use of subsea footage of our commercial divers in training in Fort William, filmed by our ROV pilot tech students also in training. Great video which explains sat diving nicely
Any reason why instead of bringing up the divers to the support boat, they don't send down a bigger bell so the divers remain at depth until they are finished? Seems kinda risky bringing them to the surface each time. There are benefits to being on the boat- proximity to support, natural light, not stuck below if the weather turns bad but still would it not speed up the process if the divers remained at depth and worked shifts to cut the time spent under saturation? Also any medical reports on why the airmix does cut divers lifespans. I presume these divers would also be ultrafit, no heavy lifting. No sign of stronger drysuits to counter the pressure or rebreathers vs restrictive power-air cables and suit heating
Any reason why instead of bringing up the divers to the support boat, they don't send down a bigger bell so the divers remain at depth until they are finished? Seems kinda risky bringing them to the surface each time. There are benefits to being on the boat- proximity to support, natural light, not stuck below if the weather turns bad but still would it not speed up the process if the divers remained at depth and worked shifts to cut the time spent under saturation?
Stephen Doherty ... so they can move to different locations. And so they have support staff right there and can’t get stranded.
If you are working on an oil pipeline that traverses 500 miles undersea and you need to do work all along it... leaving a habitat under the water becomes a pain. The divers have to travel farther and father to each location... this way, it’s like working on a crane, spend a day or two at one location, overnight move to the next, spend a day there doing maintenance, move to the next spot and so on...
Also, they might be 6 to 10 day from port... it takes 6 days for the divers to decompress to sea level... why have to wait out at the dive site for 6 days of them coming up, they are already on the boat and can do their decompression during the trip home.
Add to that the fact that it would be extremely cold to remain on the seabed continuously, 100-200m down.. much warmer topside.
@@stephendoherty8291mobility, food, heat, and being able to move about! There are usually 2-3 shifts of divers depending on the job if a rush job then more divers and bigger habitats they are in wet suits not dry suits with pipes in them where hot water is pumped into the suit! It does not take any longer to do the job if divers were stuck in a hapitat on the bottom or on the surface you only work set hours by law! Thats why these guys get from 1200 to 1500£ per day lock to lock ( up to 28 days )
These guys are badass AF. It's amazing what some humans can do. I would not do this for $1B though, it's insane.
For 1 Bill? I’d do it for a month max
I’d love the diving deep part of this job but being in a confined pressurised space with other people for weeks sounds horrible to me
Costly for the Oil business, HAH! Good one.
Imagine you’ve just come up to do your decompression stint, and you suffer a massive heart attack. You’re on the floor writhing and no one can help you, you’re surrounded by people and all they have to do is open the doors, but they can’t. Then your team is stuck with your body for a month
I suspect they've thought of things like that and have a solution to the problem.
Not a month, but six days.
They do have airlocks to transport things, but they would need to leave your body inside the airlock to decompress as well or you will be quite exploded when they release the pressure. So yeah they still need to decompress for at least a few days but at least it’s not in the same room as the other divers.
All these recommendations recently.... The algorithm has no chill
I think we have a potential Mars crew right there :-)
"Tea, coffee, biscuits... You know, normal food things."
That chamber turns into the most extreme environment when they eat Mexican food
Very interesting, thank you for sharing 💕😘👍🏽
brave and under appreciated men.
I agree. I was a SAT diver. 😂. Many years ago. Not brave. Little Bit mad. Love a challenge.
It makes me happy to know saturation diving is possible. I wonder where the limits of human physiology are though.... If it's just a matter of scale then could you not continually compress until you reach 1km of saturation or would the pressure be too much for even the bones of a human? I realise pressure increases 1 atmosphere with every 10 meters so 1km (or 100 times 10 meters would equate to 100 atmospheres.) That's a heckin lot of pressure that I'm unsure would be tolerable, but what if it was? Will subs and ROVs be our only window into the world of the deep?
Bones would be crushed at approx. 35.000 meters according to physicists. More than 3 times deeper than the deepest point in the ocean; Mariana Trench. Remember, bones are extremely tough. You don't feel the pressure that much on your body because our body is 70% water, and water can not be compressed.
I'm a saturated diver, been doing it for 9 years, deepest I've gone is 818ft, we can go over 1,000ft.. but most companies won't pay that risk going that deep, they will rov most of the time
@@Brianfultz805 wow, that is a pretty impressive depth. Thanks for coming along to tell me despite the age of this comment.
@@Brianfultz805as they start to compress you in the chamber do you feel the pressure on your body and sinuses, etc... Does it mess you up at first
RIP to the Byford Dolphin diving crew!
yes 😢
This is just incredible
I have to imagine they would do well on a space station as well
I was gonna try and pursue this route as a welder but turns out I have a damn iffy heart
It is like being on a space craft! No bugs!
byford dolphin accident... what can go wrong
Men like this have absolute balls of steel. Extremely brave.
There isn't enough money in the world to get me to do this job. God bless them.
What happens if a diver get injured or sick while working? Do they have to wait 6 days to decompress first before being evacuated?
That’s a very good question
logically yes
My god, balls of steel - how the hell do they do it ?? Not just for a day - but 28 days, living and working in those conditions - i cant get my head round it. They are superhuman, literally - physically fit and strong, nerves of steel, able to stay calm and focussed, plus rigorous attention to safety, whilst being in danger! unbelievable
Wow, that's pretty nutty. It makes perfect sense how and why they handle that situation, but I didn't know that was a job. That's pretty cool. I wouldn't want to do that work, but still.
Almost like going to space but smaller and no view, brave dudes I must say
The chambers they are seen sleeping in aren't underwater. They are parts of a decompression chamber on the deck of the ship. Only the diving bell goes underwater.
That’s what is says near the end of the video.
Thanks, tips.
Not like the video very clearly explained that...
Don’t they also breath heliox nitrox or triox? So how do they decompress partial pressures of diff gases?
A saturation diving crew had an airlock malfunction in the 80s, and just... popped...
I've seen this job related to being an astronaut but spacewalks are kind of required because if you were to create a drone for the task you would have to ship it up in addition to the crew and everything else already up there. It's just not practical as long as we are getting things into space by lighting off giant fireworks with people and material on the top.
This however seems like it would be better for everyone involved if specialized construction drones handled as much as possible. Chuck welder robot over side of boat, let it sink, keep it working non-stopped till the job is done.
If you can land a plane on the other side of the world by remote control you can remote control a robot into building and maintaining a pipeline.
lolroflroflcakes they just can’t handle the pressure pun intended
Your comparing two totally different task. Landing a drone is still done by pilots and they fly like regular planes. ROVs don’t move like humans.
I always wanted to be an under water welder, but it is impossible to get into the profession, no matter how many qualification you have. I love the nature of this kind of work.
They require alot of experience
I would have thought there's a lot of demand.
@@gringochucha Yeah it’s not that hard to get into the work. It may be hard to find consistent work but if you have the qualifications you can find jobs lol. It’s not any harder to get into than any other profession.
Living in Norway, I wouldn't have to worry about that. My dad was a saturation diver on various oil rigs in the North Sea for over 20 years, as well as recovering bodies from the submarine Kursk etc.
@@Antarathdid your dad do the course at statens dykkerskole in Trondheim or INPP in france?
That is WOW i am a padi MSD and know a lot about diving. That is such a cool staff.
Fascinating
0:39 looks just like space station
I hate the way film/tv companies 'almost' get their facts right with diving. They never actually sit down with those of us in the business and get the true story 100% correct. But that's just me being picky I guess.
What did they get wrong in this video, I want to hear what a diver thinks they got wrong
The bends wont make you go pop, rather gas expands in your tissue which can lead to death or paralysis.
pics or it didn't happen
Yeah , this one left a lot out.
so if your vessel is pressurised and youve already slowly "got used to" the pressure, then youre able to safely go up down however much you want? that's awesome
Back in the 80s there was a bell that was disconnected from its ship, it was recovered, but the two people inside had died from hypothermia
I was a sat diver for 3 years I only went 345ft
diver dave Sat divers generally make 80k and upwards. It's not a job you get out of college, though. You spend years making 50k as a underwater welder before you can even apply to those jobs
PSFY 777 500 feet for me
@@collinspecht6725 underwater welders are the highest paid trade per hour. 50k a month more like it.
@@collinspecht6725they make way more than 80k going rate is like 1400/day for sat divers
@@Max-zr7hr "they make way more than 80k going rate is like 1400/day for sat divers"
Yes, but they're not working 52 weeks per year. $1400 (or more) per day doesn't tell the whole story.
Every hear about byford dolphin incident? Not pretty to say the least
Goofy Boi I didn’t before I read you post. I searched UA-cam for that incident. Very sad indeed. 😪
Those men are unsung hero’s!
Thanks 😂
It's crazy how someone can figuratively be the closest to an astronaut. While literally being the furthest from astronauts.
These guys are literally astronauts, but upside down
And make a REAL difference in society.
I need a horror video game about this..
Bioshock
is this the narrator from urban legends? Loved that show
never watched a video with more unsettling references to gasses than this shortish clip.
this is the most amazing job in the world, I am commercial diver, I dream one day to dive as well. very cool.
guilherme diver they fix oil pipes and this is insanely deep
guilherme diver just rember they live 16-20 years less due to gas in the joints
guilherme diver what it like being one? I'm really trying to look into underwater welding
"would be costly for the oil companies" thank god they came up with this solution wouldn't want them to lose money
Well to be completely fair it's healthier to do it this way as well.
Meh. A) as someone else pointed out, it's better to decompress fewer times throughout your life. B) they get paid a SHITLOAD. Like 1400 a day. These guys earn their keep, but it's a mighty fine keep. C) Some jobs have got to be done, man. Might as well do 'em as cheaply as you can.
@@RichardTaylor1800 it does tax the body though
Well I would rather do this than decompress for 6+ days underwater. Like if you dive down to 1000 feet without this system you would need to slowly swim up 100 feet a day and wait for 10 days for the whole ascent. Doesn’t sound fun. How would you even eat?
Decompressing after a workweek gets a new meaning
Respect.
This has to be THE most extreme work environment on Earth. In fact this looks just as bad as working in space with even more cramped quarters.
working in space is actually quite pleasant compared to this
Although you probably don't have the one in a hundred chance of dying every time you go to work, unlike astronauts.
etoipiplus1237 how do astronauts have a 1 in 100 chance of dying on the way to work?
@@edwardsmith3838 Idk lots of people die doing this diving. Whether being killed when working at the sea floor, being sick and not getting help for 10 days, or getting explosively decompressed. I think it’s actually pretty comparable danger levels. No one has actually ever died in space, but people have totally died just sitting in their dive pressure chambers. Astronauts can be back to earth in 4 hours at most, sat divers need multiple days to get major help outside.
mmmm...nope!
Ok but imagine being there with T. H. for 28 days, that is just wholesome and exciting. Sadly, T. H. died because of a clearly regrettable engineering-failure. Rest in heaven Truls Hellevik.
Does the presure of the eyes increases to counter back the air presurre ?
The brilliant thing is for the whole 28 days they have high pitched voices because they breath a mixture of helium and oxygen
Aren't their voices high pitched too when they come back to the surface ?
no, it's the gas they breath under water that does that.
Metal Dog Ye, isn't it oil workers or something ?
Cloud Strife Divers?
We use helium in the breathing medium as it has no narcotic effect at depth as does nitrogen. Helium is a very light gas which allows the vocal chords in your throat to vibrate unusually fast and that causes the high-pitched voice.
Berkcam thanks, didn't want to write so much. :P (I'm also a diver, BTW)
I'm in school for this new career path but I don't know if I want to the saturation part of the diving job. I'd rather work in a water tower or somewhere near the sea shore.
@ 500 ft they are at 15 atmospheres, every 30 ft in salt water is another unit of pressure equivalent to the 1 atmosphere you are under while standing on the surface of earth.
I wish I knew exactly how much they get paid. I am just curious.
A LOT!
Just googled it. almost 2000 american per day
Wow that seems about right. Very high risk job. Takes a special person.
£1400 per day, for that, you see on Utube what you do. The rub is, actually doing it, wearing a Kirby Morgan 17 on your bonce for six hours, and getting in some tight spots, with sea water half way up your chin. It's nothing like watching it on Utube,or like snokelling in Majorca. Been there, done it, got the tshirt and seen the movie, 22 years, in that time, counting all the days in "Sat" I've spent FOUR years in a chamber,over and out.
+12alocin i go snorkeling in my bathtub can I get paid too? :^)
holy crap they better make a boatload of money.
about $1400 a day
which seems like a lot until you realize they are the top 1% of divers, been in the industry for 10-20+ years, paid for school and gear, and only work a couple jobs a year if they are lucky
LtRiot don’t most of these guys get their starts as underwater welders and doing in water ship repair? Those guys make pretty good money.
They must be loving this job..
I’d probably flip out during the first night since I wouldn’t be able to leave and take my nightly trip into town to go get something to eat
"Being a mother is the most difficult job on the planet"
Lol that bill burr skit
TheSantaslilhelper Doesn't that just make the job the most important one, not necessarily the most difficult.
+Beep Beep I Is Jeep agreed, but it doesn't make it the most important one ether.
Dude these guys get months off a year. A mom does not have a day off basically ever in the first 4-5 years and even then she'd feel bad about it.
Daniel yeah what a load of shit
I wonder what they do when one of them farts in there...
Kick shit out of him
laugh
Very interesting
Watch Dawn Wall. Pitching tents on the side of cliffs.
The bends.. yeah. No. If you suddenly decompress from that depth your body will literally burst open. If you're curious just google "explosive decompression" and have a look at the images. NSFW obviously...
How do they do their morning and evening masturbation routines in such confined space?
QuickSilver8Xf in front of each other for max horniness
Quicksilver. Just normal grab it and go for it not that I ever did ha ha
Sit in a circle and have a race
if you can't beat off or take a dump in front of another dude, this is not the job for you.
Their brave men the things that can go wrong would terrify me.
Im curious does this affect their health in any sort of ways ? Do they have chance of getting a certain disease ? I dont know anything about this subject.
It can effect your skeletal bits. Joints etc. Dysbaric osteonecrosis is a type of avascular necrosis of the bone that is most commonly found in divers and workers that breathe compressed air or gas. This condition can lead to increased risk of fractures and of total joint arthroplasty. Not always an issue. Mentally we were slightly nuts in the first place. It can effect you mentally. I Definitely suffer a little from PTSD. Didn’t know it at the time.
Once I got comfortable with all the boys I would eat a tonne of cabbage and jalapenos and drink like 10 litres of beer before I got in the little submarine thing with them. Then when the gas expands I would treat them all to some of the funniest noises they've heard
goobs but they have to breath that air for a while
This guy gets it.
beware the dreaded sea pickle!
People think this job is cool but it literally shortens your life by 15-25 years because of the pressure and artificial gases harming you...
That's a myth. It will weaken your bones though.
How long do you have to live? Exactly,nobody knows.
Jayme Ralston crap Jayme I was a mixed gas and sat diver for many years now 71 still going strong only health issue is hearing loss
Care to back any of that up?
What a load of bullshit... "artificial gases" ??
Come on, get a grip.
so after they are done how long does it take fully deco?
I believe it's one day for every 100 feet plus one extra day (just to be safe).
Mad respect for these heroes. This is what real men are made of and they're making it look like its the most ordinary thing.
Oh my god
Imagine depressurizing the entire bathroom when your on the throne.....
So is that why when you are in a pool, and try to lift your leg but it got heavy all of a sudden?
It’s crazy that going down is easy. It’s the coming up part that’s challenging. I can’t imagine how we ended up correcting this issue. There must’ve been tons of trial and error, but that’s like everything to an extent.
read about the Caissons they used to build the brooklyn bridge. This is where they first discovered that working under pressure could kill you
What happens if one of the sat divers have serious medical issue that require immediate treatment?
They probably die
Does the number of days they stay in that pressure proportional to the time needed to depressurise? What if they want to quit the job or even there’s an emergency at home? Or they fell sick?
If there’s an emergency or they want to quit they have to wait 10+ days. For every 100 feet it’s usually 1 day of decompression, plus a couple for safety. There are medics who can enter the chamber and be brought up to pressure in another room, then enter the room to help the person but even that takes hours to bring them to pressure.
The ISS of the ocean lol 🤣
Mr ballen def got his research here
He was a Seal, he knows how to dive smartass
I wonder if the biscuits they get from the outside get flattened as they come inside the chamber?
no....
how does that "diving bell" keep them compressed and how do they transfer from the bell to the pressure chamber onboard the ship
the bell pressure is automatically maintaineded via an umbilical as it travels up and down so that the divers maintain pressure. This is done by the support team in the dive control room and a team of tenders on the wet station. when the bell comes up onboard the ship it docks with the habitat (dive chamber) which are pressure equalized. Once the 2 are securely docked, the hatch is opened and the crew transfer, typically 2 in 2 out. The hatch is then closed the bell un docked and it returns to the sea bed, the divers then open the bottom hatch on the bell and can exit to their worksite.
The bell comes up through the moon pool in the ship. (Big hole). It’s then clamped onto the SAT system and the pressure is equalised. The only time the bell is at atmospheric pressure is when it’s being worked on repairs etc. some DSVs have two a bell system. In many ways it’s safer than SCUBA. Constant pressure completely controlled. It’s rolls Royce diving. Personally I found it easier than SCUBA.
Where do I start? I wanna sign up
I will read through the comments another day. It is so scary and fascinating. Like astronauts. What is the probability of mortality? How safe is this?
Underwater construction and welding is very dangerous. Many of the safety protocols are written in blood.
What happens in case of emergency if the ship the tank or pressure vessel is on starts to sink.
watch 'last breath'