The Titanic

[SkyBlueFlux]

Traditional subs can be opened from the inside. They have them spinney handle thingys. Sorry for the technical terminology.

I’m no expert but on a sub you can just build a door that’s 6 inches thick and slap a valve on it so you don’t have to bolt/unbolt it every time - makes it logistically easier but nobody would ever actually open the door while under water.

Submersibles don’t have that structural luxury, doors just become vulnerabilities to high pressure.

 

[Blue and true]

I mean, of course it can’t be opened from the inside when doing so would immediately kill everybody on board. Opening it from the inside serves no useful function. It’d be like having a handbrake on a spaceship.

More the fact that you're sealed into something like a prisoner. Besides, couldn't such a vessel be opened from the inside at a safer depth? They lost comms not long after they began the descent.

 

[Claytop]

Updates just now don't sound promising.

 

[Kompany Car]

Traditional subs can be opened from the inside. They have them spinney handle thingys. Sorry for the technical terminology.

How do you open a door deep underwater with a pressure of a few 1000psi. You would need to equalise the pressure to open the door.

 

[mosssideblue]

Eh? SoS means human. It also means communication. IE this is our situation.

They don't know if this banging is actually the sub.

It's happening at 30min intervals, of course its the sub

 

[Nebuchadnezzar]

As a reformed caver/potholer, you'll never understand that sense of exploration unless you've ever been into it yourself. Given affordable chance would I like to see the world's most famous ship wreck? Absolutely.

 

[Elbow beards]

How do you open a door deep underwater with a pressure of a few 1000psi. You would need to equalise the pressure to open the door.

Well you wouldn't, but you can open em when you're on the surface.

 

[mosssideblue]

How do you open a door deep underwater with a pressure of a few 1000psi. You would need to equalise the pressure to open the door.

As you say you need to eaqualise the pressure to have a slightly inboard positive pressure to open the hatch. But beyond 600ft, it aint happening

 

[Trevor Morley's Tache]

I’m no expert but on a sub you can just build a door that’s 6 inches thick and slap a valve on it so you don’t have to bolt/unbolt it every time - makes it logistically easier but nobody would ever actually open the door while under water.

Submersibles don’t have that structural luxury, doors just become vulnerabilities to high pressure.

Having a door that opens from the inside on an aircraft is fine because the pressure inside the aircraft at altitude is much higher than the the outside pressure which seals the door shut. It takes tonnes of force to open an aircraft door at 40,000ft.

Under the sea the pressure is much higher than at sea level, so any door would be designed to open outwards, and without an airlock would be impossible to open deep underwater without causing a catastrophic failure to the structure of the vessel itself and the instant death of everyone inside.

 

[mosssideblue]

Well you wouldn't, but you can open em when you're on the surface.

And it's the best smell in the world after being submerged for months