MovieChat Forums > Black Sea (2015) Discussion > Decompression (Spoilers)

Decompression (Spoilers)


At the end when the two dudes jettison the sub in the dry suits, I'm pretty sure the last reading on the depth gauge read 350. I'm sure it was 350 meters not feet. 350 meters is over 1,100 feet. I'm fairly certain at that depth to ascend that quickly without decompressing would kill you if the pressure didn't already do it. The captain issued dry suits that inflate that will take them to the surface. Also the captain said breath out or else your lungs will explode - that is true because you're ascending and air expands as pressure decreases. But wouldn't that also mean that the dry suit would explode as well?....I mean I know this is a movie that depends on the suspension of disbelief but being a recreational scuba diver, this is not even close to being plausible. But it is just a movie and it does have some intense scenes so it is what it is................................................................................On a different note, I've always thought the myth of the Deep Sea Diver Squeeze would be a cool death to see on screen. I'm referring to the deep sea divers that go all Jacques Cousteau and go down 300 feet diving for pearls and get their air cut off and their bodies being sucked into their helmets. Well the Mythtbusters put it the test. And if you watch their show, most of the times they debunk the myth. On occasion they label and myth plausible. It's very rare that they confirm a myth....watch the myth busters put the deep sea diver squeeze to the test...https://www.youtube.com/watch?v=pRC5R1jRO58

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No. Decompression would not be a problem. They were in a sub, so breathing air at normal pressure. You only need to breathe pressurised air if you are scuba diving.

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Wat.People have died from a much shallower ascent at a much slower rate. And yes, the suits would explode were they sealed, but they must have a pressure relief valve if they are designed for such a purpose.---It wants no straps. - Karlhttp://www.imdb.com/board/bd0000024/nest/158601447

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You've missed my point.

Decompression is only a problem when breathing pressurised air (as gas solubility changes dramatically with pressure). They were in a sub, so not breathing pressurised air.
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My God, it's full of stars!

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sc_taylor is correct The air inside a sub is ~ atmospheric. And no need to breath out as you ascend. But I have my doubts about being able to survive the outside pressure at 350 metres.

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Well since Tobin was told by Robinson to breath out on the way up in the escape suit they must have been breathing pressurised air.
I don't know a thing about subs but I do know about diving and air pressures, so ok you guys are saying subs have surface pressure inside them, fine. But when loads of water is added to a confined space the pressure will build leaving them breathing pressurised air by the time they are about to leave in the esape suits. At least half the sub was filled with water by the time they left at the end.

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Well since Tobin was told by Robinson to breath out on the way up in the escape suit they must have been breathing pressurised air.


Because there is and has never been such a thing as inaccuracy or a mistake in a movie? You are very gullible, you must love space-based movies with the noisy effects and people freezing solid.



Properly read, the Bible is the most potent force for atheism ever conceived. -Isaac Asimov

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The water in the ballast tanks is at full submergance pressure (about 30 atmospheres at 1000 feet), but is contained outside of the pressure hull, which contains the crew, which is only slightly pressurized above surface atmospheric pressure.

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The air pressure in the submerged boat they would have been breathing would have only bit a bit more than atmospheric pressure. So there wouldn't have been any decompression issues

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My problem is with the impermeability of the suits. It looked as though you could (and they did) just "zip them up" and be fully sealed for a 350M depth, which seems absurd to me.

Another goof is how Jude Law says to the kid at the end: "take one ingot of gold and you're not coming up", yet somehow then manages to lift about a ton or more of gold up to the surface in the same suit no problem.
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OCD predator: www.goo.gl/0avZjB

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Yep. Your last point is a doosey!!

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It was magical Hollywood gold that doesn't weigh anything.

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