Titanic tourist submersible missing | Sub's debris found - crew "have been lost"

11101

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Looks multiple times more high tech than the metal tube it's looking for
Even that American deep sea sub they made back in the 60s had an escape mechanism. Pull a lever and the crew capsule detaches from the rest of it and floats back to the surface.

Going off topic but I fear space tourism will go this way in a few years with all these new companies building shoddy spacecraft to attract tourists.
 

buchansleftleg

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I’m not sure about these “banging noises”. Surely, with the experienced people onboard the sub, they would be banging “SOS” in morse code if it was them.
According to one report they were banging on the hour and on the half hour, which is the Naval convention for making your signal stand out against all the background noise that can be picked up by passive sonar detectors.

That report gave me some hope but we haven't had any confirmation of that continuing to happen. Hopefully it does, as that's the best hope of finding a needle in the haystack.
 

Sparky Rhiwabon

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According to one report they were banging on the hour and on the half hour, which is the Naval convention for making your signal stand out against all the background noise that can be picked up by passive sonar detectors.

That report gave me some hope but we haven't had any confirmation of that continuing to happen. Hopefully it does, as that's the best hope of finding a needle in the haystack.
It’s a nightmarish scenario this
 

Brophs

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Unfortunately it's heat signature would be so relatively close to the background sea temperature it would not be visable on a general scan.

The sea is so vast a "Heat sink" that it rapidly drains away any residual heat from the bodies inside the vessel.

You'd need to have some sort of intense heatsource to be picked up.

Normally any sort of vehicle has rescue buoys that ping out a GPS signal when they hit the surface some also broadcast a distress call and have strobe lighting that stands out, particularly at night. These are incredibly cheap and reliable safety equipment...that should be onboard!
Ah, fair enough. Very informative, as always.
 

Solius

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Midday tomorrow is when the oxygen runs out apparently.
 

Brophs

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https://www.theguardian.com/world/l...s-search-us-coast-guard-submarine-submersible

8m ago21.29 BST
A new documentary on the missing submersible is set to air this week.

On Wednesday, Variety reported that a new documentary is scheduled to air on the UK broadcaster Channel 5 on Thursday at 7pm local time.

The ITN-produced documentary will be called: “Titanic Sub: Lost at Sea” and will be presented by host Dan Walker.

“This program will chart everything from the exploration itself, to the rise of extreme tourism, to the rescue attempts, but above all it will tell a very human story that has captured the nation which is about 5 people, all with families, who are trapped at the bottom of the ocean. Our expertise and heritage in fast-turnaround documentaries and reputation for responsible filmmaking means we always treat such stories with great sensitivity,” ITN’s managing director for content Ian Rumsey said.
Was it Dan Walker who did the interview with Nicola Bulley's husband in the days after her disappearance? Quite the ghoulish little niche he's carving out for himself.
 

Shane88

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https://www.theguardian.com/world/l...s-search-us-coast-guard-submarine-submersible


Was it Dan Walker who did the interview with Nicola Bulley's husband in the days after her disappearance? Quite the ghoulish little niche he's carving out for himself.
Netflix, Amazon, AppleTV etc are all foaming at the mouth ready to bid for the rights to an 8 episode dramatisation with Hugo Weaving as the unscrupulous owner of OceanGate and Stranger Things kid #4 as the teenager on board.
 

crossy1686

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So why exactly can’t they find these guys? They know where they left from, they know where they were going, they know at which point they lost contact. Surely the search area isn’t that big? They also heard banging?
 

Alex99

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So why exactly can’t they find these guys? They know where they left from, they know where they were going, they know at which point they lost contact. Surely the search area isn’t that big? They also heard banging?
Because the ocean is very big and things in it are constantly moving?
 

Withnail

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So why exactly can’t they find these guys? They know where they left from, they know where they were going, they know at which point they lost contact. Surely the search area isn’t that big? They also heard banging?
Well it's the sea and they were going very very deep. They don't know what went wrong so they could be anywhere really.
 

crossy1686

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Well it's the sea and they were going very very deep. They don't know what went wrong so they could be anywhere really.
They couldn’t really though could they? They’re in a certain area where they went dark and lost power or whatever. I get that the ocean is incredibly vast and it’s hard to find anything but they know exactly where they left from and exactly where they were headed, so surely that narrows down the search area? Accounting for drift to the bottom when they lost control, how far could they have been pushed of course?

Surely this is just a lack of resources more than a lack of knowledge?
 

11101

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So why exactly can’t they find these guys? They know where they left from, they know where they were going, they know at which point they lost contact. Surely the search area isn’t that big? They also heard banging?
Go stand on a hill and pick a point 4km away and imagine the gap filled with water where even the most powerful lights can only travel a few metres, and what you're looking for is constantly moving around.
 

McGrathsipan

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They couldn’t really though could they? They’re in a certain area where they went dark and lost power or whatever. I get that the ocean is incredibly vast and it’s hard to find anything but they know exactly where they left from and exactly where they were headed, so surely that narrows down the search area? Accounting for drift to the bottom when they lost control, how far could they have been pushed of course?

Surely this is just a lack of resources more than a lack of knowledge?
Lack of technology to see the floor of the ocean?
 

decorativeed

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Things that are sitting on the bottom of the ocean don’t move though. It’s not like they’re going to get washed up on shore in a couple of weeks.
Did you not see the diagram above? It's basically a giant slide to the depths down there and they were trying to stop half way down. They could be another couple of thousand meters further down than the titanic.
 

iammemphis

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They couldn’t really though could they? They’re in a certain area where they went dark and lost power or whatever. I get that the ocean is incredibly vast and it’s hard to find anything but they know exactly where they left from and exactly where they were headed, so surely that narrows down the search area? Accounting for drift to the bottom when they lost control, how far could they have been pushed of course?

Surely this is just a lack of resources more than a lack of knowledge?
You not heard of underwater currents? Even drifting 1 mile an hour for a day, that would be 24 miles away from where they began, and we're 4 days in now so 100 miles? Who knows what happened and if they're stuck or not but if they're floating then they could be anywhere?
 

mitChley

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They couldn’t really though could they? They’re in a certain area where they went dark and lost power or whatever. I get that the ocean is incredibly vast and it’s hard to find anything but they know exactly where they left from and exactly where they were headed, so surely that narrows down the search area? Accounting for drift to the bottom when they lost control, how far could they have been pushed of course?

Surely this is just a lack of resources more than a lack of knowledge?
Knowing where someone lost contact, and knowing where they are now, are not comparable. It will give a clue to where they are but that's it, the search area will still be absolutely massive. When the Argentinian Sub ARA San Juan went missing they knew last contact, and the search area was over 186,000 square miles. This sub is tiny, it could be anywhere in a large surface area, and could be anywhere between 1m and 4000m below sea level, and beyond 1000m it's pitch black, zero sun light reaches that deep.
 

prateik

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Didn't they lose contact well before it reached the bottom? It's not like they got down and hit the wreck and broke their antenna ..

If they did hit something, it was probably not on the ocean floor..
How likely is a structural failure in a sub like this?
 

crossy1686

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Knowing where someone lost contact, and knowing where they are now, are not comparable. It will give a clue to where they are but that's it, the search area will still be absolutely massive. When the Argentinian Sub ARA San Juan went missing they knew last contact, and the search area was over 186,000 square miles. This sub is tiny, it could be anywhere in a large surface area, and could be anywhere between 1m and 4000m below sea level, and beyond 1000m it's pitch black, zero sun light reaches that deep.
Ah okay, so it’s a visibility issue along with the current potentially moving them in any direction?

Okay, that makes sense. Will probably take a miracle at this point to find them then.
 

duffer

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Didn't they lose contact well before it reached the bottom? It's not like they got down and hit the wreck and broke their antenna ..

If they did hit something, it was probably not on the ocean floor..
How likely is a structural failure in a sub like this?
Consider the thing looks like someone put it together in their shed over a weekend, I'd say fairly likely.
 

crossy1686

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Thanks for the answers lads, genuinely interested in understanding why this is such a difficult task.

One thing I’ve always understood about the ocean is that it’s not to be fecked with in any way.
 

Alex99

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Things that are sitting on the bottom of the ocean don’t move though. It’s not like they’re going to get washed up on shore in a couple of weeks.
But they don't even know if they're at the bottom, or if they are, where they are.

They lost contact fairly early, considering the length of the expedition, so they could have drifted anywhere.
 

wr8_utd

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A man who was on the Titan last year told Sky News that the submersible “was not safe.”

Speaking to the outlet, former passenger Arthur Loibl said that “everybody was nervous” during the 2021 expedition to the Titanic wreck.

Loibl went on to describe the cramped conditions of the vessel, saying, “There is no seat, you cannot stand, you cannot kneel, you only sit for 10 and a half hours.

Our legs are like a crab, like a snake because it was so small, nothing was comfortable.”

He also added that the vessel was “very, very cold” as the temperature outside the submersible was 4 degrees Celsius.

When asked whether he felt that the submarine was safe, Loibl replied, “No, it was not safe.”
If only this stuff had come out earlier.
 

wr8_utd

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So why exactly can’t they find these guys? They know where they left from, they know where they were going, they know at which point they lost contact. Surely the search area isn’t that big? They also heard banging?
The search area is " twice the size of Connecticut and 4km deep".
 

wr8_utd

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It was cold and cramped. Pretty standard for feeling unsafe I guess, but ultimately nothing to do with what happened to it.
He does also mention that it was not safe, to be fair. And apart from that, that reporter (Pogue?) who is only now reporting that the vessel was lost for an hour or two even last year was also crucial information that should have been public.