In todays news...

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Re: In todays news...

Post by Le_Fromage_Grande »

Taipan wrote: Tue Jun 20, 2023 7:10 pm This sub which lost all comminication. Is it not conceivable that they brought it back to the surface and are bobbing around somewhere, or does it have a surface beacon thingy?
They're dead, and I hope no one risks their lives retrieving their bodies.
I have no idea why anyone would pay to go in a submarine, never mind a tiny submersible, fucking awful things, they're horrible surfaced, you'd have to pay me a lot of money to go in one again.
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Re: In todays news...

Post by Mr. Dazzle »

It gets better, this one is home made!
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Re: In todays news...

Post by Yorick »

Taipan wrote: Tue Jun 20, 2023 7:10 pm This sub which lost all comminication. Is it not conceivable that they brought it back to the surface and are bobbing around somewhere, or does it have a surface beacon thingy?
I read somewhere that it has 5 ways to go upwards.
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Re: In todays news...

Post by Taipan »

Le_Fromage_Grande wrote: Tue Jun 20, 2023 8:25 pm
Taipan wrote: Tue Jun 20, 2023 7:10 pm This sub which lost all comminication. Is it not conceivable that they brought it back to the surface and are bobbing around somewhere, or does it have a surface beacon thingy?
They're dead, and I hope no one risks their lives retrieving their bodies.
I have no idea why anyone would pay to go in a submarine, never mind a tiny submersible, fucking awful things, they're horrible surfaced, you'd have to pay me a lot of money to go in one again.
A guy on tv said pretty much the same thing today. He said if even they find it, its still unlikely they'd be able to resurface it in time.
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Re: In todays news...

Post by Yorick »

I'm surprised that when folk are paying 250k for the experience, there's not a fixed line to a ship on the surface.

Would be expensive, but only the cost of one passenger maybe?
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Re: In todays news...

Post by KungFooBob »

4km of air hose/fibre...

I guess an air hose has to be pretty strong to not squish under the pressure, so would be quite chunky.

It would need one hell of a reel on the mothership to store it.
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Re: In todays news...

Post by Le_Fromage_Grande »

How would you make and transport a 4km cable capable of pulling a submersible from the bottom of the sea, it'd have to be one hell of a winch.
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Re: In todays news...

Post by Yorick »

Le_Fromage_Grande wrote: Tue Jun 20, 2023 9:44 pm How would you make and transport a 4km cable capable of pulling a submersible from the bottom of the sea, it'd have to be one hell of a winch.
I'm sure they could do something for £1m?
Cost of one trip?

And there's no real weight involved.
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Re: In todays news...

Post by Yorick »

KungFooBob wrote: Tue Jun 20, 2023 9:36 pm 4km of air hose/fibre...

I guess an air hose has to be pretty strong to not squish under the pressure, so would be quite chunky.

It would need one hell of a reel on the mothership to store it.
No need for air hose
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Re: In todays news...

Post by KungFooBob »

Well it's got to be a pretty tough fibre cable if it needs any bandwidth, even a copper cable for basic voice comms is going to be pulled pretty hard at those distances.
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Re: In todays news...

Post by Yorick »

KungFooBob wrote: Tue Jun 20, 2023 9:56 pm Well it's got to be a pretty tough fibre cable if it needs any bandwidth, even a copper cable for basic voice comms is going to be pulled pretty hard at those distances.
Aha. Adding in comms would be a good idea.
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Re: In todays news...

Post by demographic »

Dont bathescapes have a cable? The Triest went ro the Challenger deep at the bottom of the Marianas trench in about 1960 so its possible
Not so sure about the airpipe though, its a shitload of pressure..
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Re: In todays news...

Post by Le_Fromage_Grande »

Yorick wrote: Tue Jun 20, 2023 9:52 pm
Le_Fromage_Grande wrote: Tue Jun 20, 2023 9:44 pm How would you make and transport a 4km cable capable of pulling a submersible from the bottom of the sea, it'd have to be one hell of a winch.
I'm sure they could do something for £1m?
Cost of one trip?

And there's no real weight involved.
Lol, no real weight, have you ever tried moving long lengths of cable?
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Re: In todays news...

Post by Ant »

Yeah, there's no real weight to a couple of tons of cable..... :lol:
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Re: In todays news...

Post by Yorick »

Le_Fromage_Grande wrote: Tue Jun 20, 2023 10:40 pm
Yorick wrote: Tue Jun 20, 2023 9:52 pm
Le_Fromage_Grande wrote: Tue Jun 20, 2023 9:44 pm How would you make and transport a 4km cable capable of pulling a submersible from the bottom of the sea, it'd have to be one hell of a winch.
I'm sure they could do something for £1m?
Cost of one trip?

And there's no real weight involved.
Lol, no real weight, have you ever tried moving long lengths of cable?
A million pound ship could do it
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Re: In todays news...

Post by cheb »

Bathyspheres have a cable. Read up on Beebe and Barton. There's a bit in one of their books about depth sounding using cables. The lengths and weights needed got ridiculous quite quickly, the wire doesn't hang straight down because of differing currents at different depths.

Bathyscaphes have freedom of movement. The one that went to the bottom of the Marianas trench used steel shot held in with electromagnets. It could be released in small amounts to adjust bouyancy and the entire container could be jettisoned in an emergency. The float contained an eye watering amount of petrol, lighter than water and incompressible so the bouyancy didn't change with depth.

I'll try to find references and a bit more detail tomorrow.

A million pounds doesn't buy you much of ship these days, the ferries for out here are over £50M each, and that's before the inevitable overspend.
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Re: In todays news...

Post by ZRX61 »

4500psi at that depth. They're fucked. Even if it surfaced, they have no way to get out of it.. altho they probably don't look much like people at this point.
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Re: In todays news...

Post by David »

There has been a rythmic knocking heard at 30 minute intervals.....still no precise location, even if they can pin down the location, they have to get ROV's on site and down, then release the submersible if it's trapped, and then get it up and a). find it b) get the lid off.
Less than 24 hours of air left.

Not looking good.
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Re: In todays news...

Post by KungFooBob »

Cthulhu had them, it waiting for the rescuers so it can have them too.

End of days man!
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Re: In todays news...

Post by Screwdriver »

I may be the only one who thinks they stand a chance then.

I am quite confident that this submersible will have features designed to mitigate most if not all of the disaster scenarios you can think of. I mean YOU dear reader because if you can think of a potential problem in the five minutes you spent thinking about it, I am sure the designer will also have thought of them in the five years it took to build it.

It is tempting to invoke the Darwin Award for people who take such risks to gawp at a shipwreck but they're still people. Pretty good people too by all accounts so I hope they get out of this alive. It is looking grim but there is yet hope.
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