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A comment on Oceangate Statement, “We now believe that [all crew] have sadly been lost.”. Parent comment

Re:Oceangate Statement, “We now believe that [all crew] have... by f38zf5vdt on Thursday June 22, 2023 @04:12PM (#36438162)
Probably combusted? At 400 atms their biomass would compress into a gelatinous hydrocarbon fat blob with the oxygen present, resulting in automatic combustion. The amount of compression their bodies would experience is an order of magnitude greater than a diesel engine cylinder. The explosion would immediately be quenched by the surrounding water and the only thing remaining of the occupants would be ash.

This would happen on the order of milliseconds.

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Re:Oceangate Statement, “We now believe that [all crew] have... by jamiek88 on Thursday June 22, 2023 @04:19PM (#36438283)
When it happened in that accident referred to elsewhere in the thread the water temp was elevated massively in that area (enclosed so measurable).

Their blood would combust instantly.

They found cooked blood after that accident too.

Edit: https://en.wikipedia.org/wiki/Byford_Dolphin

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Re:Oceangate Statement, “We now believe that [all crew] have... by f38zf5vdt on Thursday June 22, 2023 @04:24PM (#36438365)
That accident was only 132 psi. A diesel engine causes combustion at around 300-500 psi. This accident was 3000-6000 psi, so I think it's safe to assume that the organic matter would combust almost instantly.
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Re:Oceangate Statement, “We now believe that [all crew] have... by amluto on Thursday June 22, 2023 @10:26PM (#36442076)
Why would anything, except possibly something particularly easy to ignite on a surface, ignite? The only thing being heated dramatically is the air, and a whole lot of cool water would be spraying everywhere at the same time.
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Re:Oceangate Statement, “We now believe that [all crew] have... by jamiek88 on Thursday June 22, 2023 @10:29PM (#36442101)
Same way bubbles imploding have localised temps hotter than the sun, just that writ larger and at 400 times atmosphere.

This: https://www.dailyrecord.co.uk/news/uk-world-news/divers-bloo...

was 'only' at nine atmospheres the titanic is at four hundred!

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Re:Oceangate Statement, “We now believe that [all crew] have... by ilyt on Thursday June 22, 2023 @04:25PM (#36438400)
Went to see titanic only to get turned into diesel, horrible fate
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Re:Oceangate Statement, “We now believe that [all crew] have... by babypuncher on Thursday June 22, 2023 @04:26PM (#36438424)
Someone put Mythbusters on the case
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Re:Oceangate Statement, “We now believe that [all crew] have... by f38zf5vdt on Thursday June 22, 2023 @04:29PM (#36438472)
Yeah, it would be curious (if morbid) to see what happens to something like an animal carcass. In most cases of submarine failure at depth e.g. the USS Scorpion no bodies are ever found.
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Re:Oceangate Statement, “We now believe that [all crew] have... by pugworthy on Thursday June 22, 2023 @05:27PM (#36439257)
They sorta did one like this ...

https://www.youtube.com/watch?v=LEY3fN4N3D8

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Re:Oceangate Statement, “We now believe that [all crew] have... by pfdietz on Thursday June 22, 2023 @05:04PM (#36438982)
Adiabatic compression of air to 400 bar increases the absolute temperature by about a factor of 5.5, which would be the temperature of a flame.
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Re:Oceangate Statement, “We now believe that [all crew] have... by amluto on Thursday June 22, 2023 @10:21PM (#36442046)
Water, fat, etc are not nearly as compressible as air, and the thermal mass of the air involved would be a couple orders of magnitude lower than everything else.

400 bar is (from some quick searching) fairly mild for industrial hydraulic systems, and hydraulic fluid doesn’t get especially hot while in use.

On the other hand, a leak in a pressurized hydraulic system is extremely dangerous if you’re around it due to the extreme velocity of ejected fluid.

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Re:Oceangate Statement, “We now believe that [all crew] have... by f38zf5vdt on Friday June 23, 2023 @09:14AM (#36446402)
Hydraulics don't get hot while in use unless you introduce air into the system, in which case they do get hot and explosive. This is called hydraulic dieseling and microdieseling. The passengers would have been surrounded by oxygen and CO2 gas, and the oxygen tank would rupture as soon as the capsule imploded.
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