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SerthVarnee posted:This bit reminded me of the difference between pilot training on the Enterprise and the Hornet. I really wish I had been really big into history while my grandpa was alive because he would’ve had opinions on this. He’d always talk about people. He had died before I truly understood the insanity it must’ve been to be on the Lexington after graduating from academy in December of 1941, then the Yorktown and then the Hornet. (My mom said all he’d say about that, in her presence at least, is that he “never got wet”)
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Apr 7, 2024 03:02
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A.o.D. posted:Exact quote, just de twitterfied for non account havers. yield? what's yield, precious?
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Apr 7, 2024 03:03
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honestly i'm surprised he hasn't recommended some kind of submarine-based replacement
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Apr 7, 2024 03:06
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facialimpediment posted:WTYP covered that dumbass Elon tweet at this point in their latest video: https://www.youtube.com/watch?v=Y4q7K2rfG3w&t=4586s How many times did the weird lady laugh about people she considers beneath her dying?
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Apr 7, 2024 03:09
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ded posted:just melt it all down and reforge it! 0% loss!!!!!!!!!! I imagine it will get recycled; and the specifics are probably pretty interesting[1] (as would be the specifics for creating the replacement and arranging timely supplies of nice and fresh steel of appropriate spec for it.) [1] Like imagine what's involved in recycling a scrapped battleship? Must be pretty cool.
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Apr 7, 2024 03:15
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OddObserver posted:I imagine it will get recycled; and the specifics are probably pretty interesting[1] (as would be the specifics for creating the replacement and arranging timely supplies of nice and fresh steel of appropriate spec for it.) Most shipbreaking is done by starving people in horrible, deadly conditions  https://en.wikipedia.org/wiki/Alang_Ship_Breaking_Yard
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Apr 7, 2024 03:39
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OddObserver posted:I imagine it will get recycled; and the specifics are probably pretty interesting[1] (as would be the specifics for creating the replacement and arranging timely supplies of nice and fresh steel of appropriate spec for it.) You cut it up into little pieces and feed them into a furnace at the steel plant. Most steel used in the US is recycled. PSNS has a big saw they use to section up submarines which is pretty fun to watch.
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Apr 7, 2024 03:40
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Elviscat posted:You cut it up into little pieces and feed them into a furnace at the steel plant. Most steel used in the US is recycled. sometimes salvage dudes bring out the big portaband too https://jalopnik.com/a-chain-just-cut-through-a-capsized-cargo-ship-filled-w-1845784581
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Apr 7, 2024 03:54
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Elviscat posted:You cut it up into little pieces and feed them into a furnace at the steel plant. Most steel used in the US is recycled. The furnace is loving awesome but I've only seen it while powered down.
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Apr 7, 2024 04:17
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Vincent Van Goatse posted:How many times did the weird lady laugh about people she considers beneath her dying? As ever, reading wikipedia will take a tenth of the time and have twice the information of your average wtyp. With 100% less annoying fuckwits.
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Apr 7, 2024 05:27
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shame on an IGA posted:sometimes salvage dudes bring out the big portaband too Yeah that was pretty wild to discover that the best method for cutting apart that ship was a Giant loving Chain that can somehow operate as a Giant loving Saw. News reports right now have shown the bridge being cut apart by plasma torches and the like, but the underwater work has to be real, real rough.
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Apr 7, 2024 05:39
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I think everything underwater has to be divers, probably with umbilicals for air and heat, and yeah, imagine cutting pieces of bridge apart that could fall on you, or spring, or get tangled in your umbilicals..... That's a rough job right there.
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Apr 7, 2024 06:06
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facialimpediment posted:Yeah that was pretty wild to discover that the best method for cutting apart that ship was a Giant loving Chain that can somehow operate as a Giant loving Saw. News reports right now have shown the bridge being cut apart by plasma torches and the like, but the underwater work has to be real, real rough. ever used a cheese slice? it's basically the same principle, only instead of using downward force you're applying a sawing action
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Apr 7, 2024 06:33
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Comrade Blyatlov posted:honestly i'm surprised he hasn't recommended some kind of submarine-based replacement Musk, some time in the near future posted:The boring company proposes a tunnel 4" wider than a car drilled through the ocean. We then evacuate 80% of the air pressure to reduce drag and replace what's left with pure oxygen so people don't asphyxiate. It's not rocket science, people, which I am also very good at, honest.
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Apr 7, 2024 08:34
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Pure oxygen atmosphere. With cars. I can see him getting pissy when people say no already.
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Apr 7, 2024 08:49
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ded posted:just melt it all down and reforge it! 0% loss!!!!!!!!!! This is more intelligent than what musk is actually proposing.
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Apr 7, 2024 11:40
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Elviscat posted:I think everything underwater has to be divers, probably with umbilicals for air and heat, and yeah, imagine cutting pieces of bridge apart that could fall on you, or spring, or get tangled in your umbilicals..... The guys that do the true deep-sea stuff end up with weird issues surrounding their hip bones, iirc. Mechanism was poorly understood last i looked, but thought to be something related to the weird things that happen from breathing gas under that level of pressure. It’s not what we’re breathing at the surface now, the actual-deep water mix has to be something with a lower percentage of O2 and a touch of helium added. “Trimix” is the name, my old shop could make the stuff but you had to pay like $80 per normal scuba cylinder and sign a mountain of waivers. I got to see a little bit of the commercial gear when I was a divemaster, it was pretty wild! You’d likely have a helmet from these guys if you’re doing any of that. https://www.kirbymorgan.com/products/helmets
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Apr 7, 2024 11:54
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I don't have any deep insights to add but, pressure changes all chemistry and equlibrium points. Add to that how Oxygen is a bit, uh, insane, compared to other elements in most situations. And so high pressures will push unnatural amounts of it into your blood cells, turning it from performance enhancing doping into toxin. And the combined one weird trick to fight both that and the bends is to displace it with both less massive inert gasses and reduce the total amount of it in the blended air. Naturally trimix stuff would (might?) suffocate you at sea level. https://en.m.wikipedia.org/wiki/Oxygen_toxicity
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Apr 7, 2024 12:35
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A.o.D. posted:A recent example: Sorry I just flipped my loving desk Thats not how metal fatigue works you loving idiot
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Apr 7, 2024 15:29
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Well you see when we made a toothpick bridge in 7th grade, I was able to repair it by just gluing some new toothpicks on it. Basically the same thing.
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Apr 7, 2024 15:32
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And also, just piping in here to say underwater inspecting is hilariously dangerous. I was once told that their velocity limits were typically 1 ft/s and the tidal area of the Patapsco is 100% not that. e: Add in cranes, hooks, and torches? If someone doesn't get killed in this process it'll be a miracle. e2: You can't build a cofferdam around this. e3: facialimpediment posted:WTYP covered that dumbass Elon tweet at this point in their latest video: https://www.youtube.com/watch?v=Y4q7K2rfG3w&t=4586s Can almost guarantee that the replacement will be cable stay. SquirrelyPSU fucked around with this message at 17:28 on Apr 7, 2024 |
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Apr 7, 2024 15:36
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ThisIsJohnWayne posted:I don't have any deep insights to add but, pressure changes all chemistry and equlibrium points. Add to that how Oxygen is a bit, uh, insane, compared to other elements in most situations. And so high pressures will push unnatural amounts of it into your blood cells, turning it from performance enhancing doping into toxin. And the combined one weird trick to fight both that and the bends is to displace it with both less massive inert gasses and reduce the total amount of it in the blended air. My org had a diver a while back who had a rebreather failure at around 100ft. It started giving him pure O2 at that depth, when the normal max depth for breathing pure O2 is like 15ft. So he (accidentally) did his absolute best to sail off into the O2 exposure sunset, and there was nothing to stop him from doing exactly that. 2 things went hilariously right for him: He clamped down on his reg instead of spitting it out The pure O2 had absolutely crashed any nitrogen out of his system, so when his buddy lost control of him while trying to ascend him (ascending someone having a seizure sounds like about the worst thing possible), dude didn’t have any nitrogen left in him to give him any flavor of decompression illness. Our dive safety officer said the guy was expected to make a full recovery. Root cause was determined to be a gear anomaly, not diver error. That model of Hollis rebreather has 3 O2 sensors in the loop; if one fails, the thing gives you a warning and you’re supposed to abort dive/head home. The 2 remaining sensors override the 3rd bad one, and you get to come home without trying to take your one free breath of water that everyone is entitled to. Poor bastard had a double failure of those sensors, and the 2 bad ones overrode the still-functioning one. This was scientific diving, which gets to be its own weird subset in the diving world (broadly broken up into recreational, scientific, and commercial). The same constraints apply across all 3 types (the ocean doesn’t give a sloppy wet gently caress about what you’re doing, it’s just as mad all the same). I’m guessing there will be every sort of survey done in the former bridge area, but a channel like that with unknown/invisible hazards sounds uniquely terrible. Dive surveys are probably dead last on the list after every kind of sonar and magnetometric survey, but I’d bet it’s still on the list.
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Apr 7, 2024 18:06
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ThisIsJohnWayne posted:I don't have any deep insights to add but, pressure changes all chemistry and equlibrium points. Add to that how Oxygen is a bit, uh, insane, compared to other elements in most situations. And so high pressures will push unnatural amounts of it into your blood cells, turning it from performance enhancing doping into toxin. And the combined one weird trick to fight both that and the bends is to displace it with both less massive inert gasses and reduce the total amount of it in the blended air. Hypoxic Trimix will suffocate you at shallow depths, if your ppO2 is below 18% at sea level (any mix you'd breathe below 270', roughly). Normoxic Trimix is 21%, and same depth limit (190') as just O2/N2, same oxygen concentration as sea level, but with less risk of the bends. Basically, as you go deeper you replace N2 with helium, then you replace O2, in order to reduce the chances of oxygen toxicity. Technical diving is scary as gently caress to think about, if your gas mix is not correct, you're dead and there's nothing anyone can do to save you, basically. orange juche fucked around with this message at 18:46 on Apr 7, 2024 |
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Apr 7, 2024 18:38
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Getting exotics rated was some of the most stressful diving I've ever done (except for cave diving. gently caress cave diving).
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Apr 7, 2024 18:43
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Cave diving seems a great way to turn money into a very unique coffin
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Apr 7, 2024 19:35
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Milo and POTUS posted:Cave diving seems a great way to turn money into a very unique coffin Pfft, look at Mr MoneyBags here with his fancy recovered body that didn’t become a landmark and a warning all at once 
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Apr 7, 2024 19:40
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But they didn't recover the body that's why the coffin is unique lol
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Apr 7, 2024 19:42
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orange juche posted:Hypoxic Trimix will suffocate you at shallow depths, if your ppO2 is below 18% at sea level (any mix you'd breathe below 270', roughly). Normoxic Trimix is 21%, and same depth limit (190') as just O2/N2, same oxygen concentration as sea level, but with less risk of the bends. I had an instructor tell me that the best way to have safe gas switches is to analyze the bottles religiously and label before the dive, both what the blend is and what the Maximum Operating Depth is. Then while on the dive before doing any switches, to check the label, verify your depth, have your buddy check the label and confirm you're good, then do the switch. drat I gotta finish up my Tech training, but did a move and need to find a good instructor out here.
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Apr 7, 2024 19:50
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Milo and POTUS posted:Cave diving seems a great way to turn money into a very unique coffin Sometimes I think "I'm not claustrophobic" then I remember cave diving exists.
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Apr 7, 2024 20:03
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My cousin leads geologists in cave dives in cenotes in the Yucatan Peninsula. I was an Army Combat Diver, I went diving with him once...once.
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Apr 7, 2024 20:40
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Elviscat posted:Sometimes I think "I'm not claustrophobic" then I remember cave diving exists. I'm not claustrophobic at all (a little claustrophilic if anything), but add underwater and complete lack of orientation, and that is fuck_that.txt. Or, https://www.youtube.com/watch?v=iXVohhNenGo
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Apr 7, 2024 20:47
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I worked with saturation divers once, I will never do anything approaching that. gently caress that.
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Apr 7, 2024 20:49
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gently caress diving in caves. Literal nightmare fuel.
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Apr 7, 2024 20:54
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Bored As gently caress posted:gently caress diving in caves. Literal nightmare fuel.  gently caress the ocean gently caress caves and for sure gently caress ocean caves
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Apr 7, 2024 20:57
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Elviscat posted:Sometimes I think "I'm not claustrophobic" then I remember cave diving exists. I feel like cave diving is why god made remotely operated vehicles.
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Apr 7, 2024 20:57
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Eason the Fifth posted:
Matey, they don't even let me gently caress the ocean caves. 
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Apr 7, 2024 21:03
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I like the ocean and I respect the ocean and i know how to swim, and that's why I don't like swimming there
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Apr 7, 2024 21:45
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ThisIsJohnWayne posted:I like the ocean and I respect the ocean and i know how to swim, and that's why I don't like swimming there  I wanna get my scuba cert knocked out at some point for basic rear end rec diving, but anything beyond that, no thank you. And honestly I don't even know if I'll be able to thanks to sinus issues. I think the only exception I have to nothing beyond basic rec diving is that I'd like to go on one of those dive tours of the sunken Imperial German fleet at Scapa Flow at some point.
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Apr 7, 2024 22:13
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Do not the cave.
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Apr 7, 2024 22:15
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facialimpediment posted:Yeah that was pretty wild to discover that the best method for cutting apart that ship was a Giant loving Chain that can somehow operate as a Giant loving Saw. This begs the question "Why do starships in 40K not also have chainswords, perhaps on those big dumb tumblehome bows they are so insistent on using???" (I blame the Adeptus unwillingness to innovate)
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Apr 7, 2024 22:18
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