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Old 06-20-2023, 05:02 PM
 
Location: Tricity, PL
61,688 posts, read 87,077,794 times
Reputation: 131643

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Quote:
Originally Posted by Labonte18 View Post
So, I have some questions if anyone were knowledgeable enough to answer..


1) Wouldn't something like this have an external beacon that.. in theory, could be released that would float to the surface and say "Hey, i'm here"? An EPIRB for subs, for lack of a better term.

2) If this were a 'crushing' incident.. Wouldn't there be some parts of it that would likely float to the surface if that happened? Fuel? Was this thing electric? Just seems.. There'd likely be SOME debris.

3) I've read that the props on this thing, if they became entangled, they're stuck. Ok.. I can buy that.. But.. Why would comms be lost?

4) A 'normal' sub would have ballast tanks, along with some form of compressed gas to 'blow' those tanks.. Push all the water out of them to make the ship buoyant. Anyone know what this thing had? In the case of #3, it probably wouldn't help, but..

So, with all of those questions, and my rudimentary knowledge.. The option that I can come up with would be one of a few things.

First.. if this is electric.. A catastrophic electrical system failure. Which.. Seems unlikely and seems there'd be redundancies in place for. Plus, why wouldn't they just blow the tanks?

Second.. CO2 poisoning. Think Apollo 13. How are they setup to remove excess CO2?

Third.. Intentional ditching. Suicide, more or less by the pilot or one of the passengers. Seeing as these folks paid $250k for the trip.. I don't put much faith behind this idea.

Lastly.. Entanglement coupled with poor decision making. Basically, they got tangled, the pilot used up all electrical power attempting to free themselves. Blowing the tanks would have no real effect, since they're tangled on something. This would explain the lack of pings I guess.


Oh.. And one more. Godzilla.
Click on the link posted on #120. Most of your questions are answered there.
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Old 06-20-2023, 05:04 PM
 
Location: Forests of Maine
37,461 posts, read 61,379,739 times
Reputation: 30409
Quote:
Originally Posted by Labonte18 View Post
So, I have some questions if anyone were knowledgeable enough to answer..


1) Wouldn't something like this have an external beacon that.. in theory, could be released that would float to the surface and say "Hey, i'm here"? An EPIRB for subs, for lack of a better term.
US Navy subs have that. On a mechanical timer in the control room. It is always counting down, if it gets down to only having 15 minutes left before it launches a terribly loud siren sounds off. The QuarterMaster on Watch is tasked with checking it every half hour and winding it up. But sometimes if they get busy on something else and the alarm sounds.



Quote:
... 4) A 'normal' sub would have ballast tanks, along with some form of compressed gas to 'blow' those tanks.. Push all the water out of them to make the ship buoyant. Anyone know what this thing had? In the case of #3, it probably wouldn't help, but..
The compressed air used to blow main ballast tanks must be pressurized to a pressure greater than sea pressure at that depth.

As you begin discussing these extreme depths we quickly exceed our tech level for compressing and holding air in a bottle.

4500psi is pretty much the standard used on our subs. Any math wizard will tell you the maximum depth that can be useful for blowing ballast tanks.

Also if there is any humidity in that air, at 4500psi the humidity gets to acting funky. It will freeze valves in place.



Quote:
... Second.. CO2 poisoning. Think Apollo 13. How are they setup to remove excess CO2?
Normally CO@ scrubbers are used to scrub the CO2 out of the air.

Also we stock drums of a powder [I am getting too old to remember what it was], that will suck the CO2 out of our air. In the audio interview, the former passenger said they had this powder glued onto like fly strips. unroll and hang fly strips and they will remove the CO2 for you.
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Old 06-20-2023, 05:22 PM
 
Location: North Carolina
715 posts, read 1,039,406 times
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Quote:
Originally Posted by ClaraC View Post
I haven't heard this question answered.

The guiding ship lost communications with the Titan about an hour and 45 minutes after deploying it. Was the Titan expected to have reached the Titanic by that time, or would they still be in transit?
Still in transit, they think. NYTimes this morning said total dive time to Titanic is 2 and a bit more... so they were well into the dive down when they lost comms.
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Old 06-20-2023, 05:32 PM
 
Location: Tricity, PL
61,688 posts, read 87,077,794 times
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Quote:
Originally Posted by MJJersey View Post
I just listened to this Royal Navy guy who called the sub a "mickey mouse" operation and a "death trap". He said it was only rated for 3,000 meters but the titantic is over 3800 meters deep.
Sources said that "The vehicle, designed to travel down 12,500 feet"
12500 feet = 3810 metres
That's very, very calibrated.

https://mashable.com/article/missing...ame-controller

Titan is capable of diving four kilometers (2.4 miles/4000m) “with a comfortable safety margin,” according to documents filed by the company in April with a U.S. District Court in Virginia that oversees Titanic matters.

https://apnews.com/article/titanic-s...52566e451a5e6d

The wreckage of the Titanic is also at a depth of 13,000 feet — too deep for typical U.S. Navy subs, which typically go down to 2,000 or 3,000 feet, to descend to.
13000 feet = 3962.4 metres

https://www.nbcnews.com/news/world/l...ates-rcna90103
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Old 06-20-2023, 05:57 PM
 
Location: Sheffield, England
5,195 posts, read 1,871,071 times
Reputation: 2268
Well well well. Ego and money, and history repeating itself. The irony.

Leave the damn Titanic alone. It's a gravesite not a bloody tourist attraction. Wouldn't be surprised if the whole "operation" was swaddled in corruption and a disaster waiting to happen.

Last edited by Eman Resu VIII; 06-20-2023 at 06:07 PM..
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Old 06-20-2023, 06:03 PM
 
19,620 posts, read 12,218,208 times
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This person who is supposed to be a submarine expert gives quite an in depth analysis.



https://www.youtube.com/watch?v=4dka29FSZac&t=1009s
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Old 06-20-2023, 06:18 PM
 
7,634 posts, read 8,705,627 times
Reputation: 4488
Why don't they paint the submersible in bright, easy-to-identify color, say orange? Even if it's broken into pieces that would help finding them.

Also, could it implode and instead of breaking into pieces, it maitained the whole piece like a crushed can in irregular shape, so even if you see it you can't tell what it is?

Last edited by snowmountains; 06-20-2023 at 06:29 PM..
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Old 06-20-2023, 06:39 PM
 
Location: West coast
5,281 posts, read 3,074,759 times
Reputation: 12275
Submariner you know more about this than most.
Why is it that this vessel requires 17 bolts to seal it?
Wouldn’t a good gasket, a simple connection (possibly a few interior suction cups on hinges) and the massive pressure creat the required seal?
I mean when I am diving deep and do a mask drill unless I equalize I kinda have to pry the mask off my face.
Same can be said about jarring except it’s vacuum rather than pressure you don’t need the ring.
Seems like a more escape friendly system would be an easy design.
Am I way off base here?
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Old 06-20-2023, 06:51 PM
 
4,005 posts, read 4,104,386 times
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Who in their right mind would agree to be bolted into a can from the outside? They lock caskets from the outside. (Of course, there’s no reason for it lock from the inside DOH). Just sayin’
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Old 06-20-2023, 07:00 PM
 
1,668 posts, read 1,486,659 times
Reputation: 3151
I believe water pressure at depth is .433 psi per foot. At that depth it's over 5000 psi. I believe a pinhole leak could cut you in half. I so hope this thing pops to the surface somewhere with the people alive. Even though they can't get out could there be some way let air in if it's at the surface?
Now, I don't know anything about undersea technology but it sound like there is a shocking lack of redundant systems for something like this happening. How could it be roaming around down there without someone at the surface tracking it's exact location and the function of all systems displayed and recorded at every second.
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