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Banging sounds heard during Titan search, according to internal government memo

cnn.com

91–100 of 107 posts

Re: Banging sounds heard during Titan search, according to internal government memo

#91
I don't know how they could be retrieved successfully since the US Navy DSRV crush depth is only 5,000 feet; the only hope they have if they're still alive, is to get the propulsion back so they can maneuver to a more shallow depth. So sad.

Re: Banging sounds heard during Titan search, according to internal government memo

#92
post #73
post #18

Earlier quoted context omitted.

Imagine being so close yet still not able to escape the vessel. I don't know what is standard for subs, but it strikes me as particularly terrifying that they have no way to open it from the inside.

I think, but based on nothing but news stories about this incident, that's common for very deep sea submersibles. It makes sense, the could opt out of a whole bunch of surface ship concerns and they expect to be launched and retrieved. It also helps simplify the design if you don't have to worry about opening hatches from the inside. That adds complexity and can introduce new failure modes.

I'm betting that little potty bucket may be filling up...

Re: Banging sounds heard during Titan search, according to internal government memo

#93
post #87

Earlier quoted context omitted.

Carbon dioxide levels will do them in before lack of oxygen.

Assuming they don't have filters onboard, yeah. I thought it was possible to filter out many man-days of CO2 with relatively small filters.

In a well-designed submersible that goes through thorough testing and gets a classification and rating... which I gather the CEO took short-cuts on. He's one of the passengers on board.

Re: Banging sounds heard during Titan search, according to internal government memo

#94
post #59

Earlier quoted context omitted.

> Those guys are pioneers, they are doing something almost nobody has done before, like going deep down 4 kilometres under the surface of the ocean. They are rich tourists going down to look at a famous shipwreck, the same as hundreds of actual professionals have done. Much like the rich tourists who are mostly carried up Everest this does not take guts or ability, it takes a fat wallet and nothing more. Actually, it…

*Some of them are rich tourists. Paul-Henri Nargeolet is one of the people on board, has done more than 30 dives to the site since the 1980s, technically owns the rights to the ship, was in the French Navy for 20+ years, and has recovered artifacts from the site - only person to do so. Not quite fair to call him a tourist.

I would think he would be sending Morse code, being a Navy man.

Re: Banging sounds heard during Titan search, according to internal government memo

#95
post #46
post #33

What is it about this type of story that is so attention grabbing? Kids trapped in cave, Plane missing in jungle, etc etc. Is there a name for this? Pragmatically speaking, this is of little consequence to most people, there are greater human tragedies going on, there are more catastrophic engineering failures happening, more egregious negligence,.. something about the unknown element of it.

I think a lot of it is schadenfreude. A bunch of rich people pay out their ass to get in a jerryrigged submarine to look at a sunken boat and end up becoming one.

You pretty much nailed it!

Re: Banging sounds heard during Titan search, according to internal government memo

#96
post #84

Earlier quoted context omitted.

*Some of them are rich tourists. Paul-Henri Nargeolet is one of the people on board, has done more than 30 dives to the site since the 1980s, technically owns the rights to the ship, was in the French Navy for 20+ years, and has recovered artifacts from the site - only person to do so. Not quite fair to call him a tourist.

Taxi driver in that case? Someone paid to take rich people around...

He also has a net worth of 1.5 billion dollars.

You can be both rich and the foremost world expert on the Titanic at the same time.

Re: Banging sounds heard during Titan search, according to internal government memo

#97
post #64
post #9

Earlier quoted context omitted.

They have another ~30 hours of air. The biggest hope is that they are not terribly deep trapped near the surface and can be located in that time.

Much more if cannibalism set in.

they'll be out of air or hypothermic long before they get crazy enough to start eating each other or drinking blood

Re: Banging sounds heard during Titan search, according to internal government memo

#98
post #76
post #69

Earlier quoted context omitted.

Interesting idea, I actually can't think of anything they are able to communicate that would aid in their rescue. They could probably signal if they are close to the surface, they won't be able to provide much more information on their exact location I think.

Identifying themselves to disambiguate from other random noises?

The banging noise is already treated as non-random but that doesn't make it easy to locate, and they are presumably unable to locate themselves so won't be able to transmit any location details even if you gave them a few words worth of bandwidth, the best they might convey is how deep they are currently are "We are only a few meters above the wreck". for example

Re: Banging sounds heard during Titan search, according to internal government memo

#99
post #33

What is it about this type of story that is so attention grabbing? Kids trapped in cave, Plane missing in jungle, etc etc. Is there a name for this? Pragmatically speaking, this is of little consequence to most people, there are greater human tragedies going on, there are more catastrophic engineering failures happening, more egregious negligence,.. something about the unknown element of it.

Isn't that like basic story telling? Someone goes on an adventure, then a catastrophe happens and now we are at the most thrilling part: will they make it out alive? And this is a real story, playing out in real time.

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Re: Banging sounds heard during Titan search, according to internal government memo

#100

This makes me think of the search for the USS Thresher, a US Navy submarine. After the sub sank, the Seawolf was one of the Navy ships that went looking for it. Sonar operators on the Seawolf heard what they thought were manually operated SOS signals, banging of metal on metal, and eventually something resembling a voice. While these reports have started some conspiracy theories, the sonar readings from the initial s…

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