First footage of Titan sub wreckage revealed | WGOW Shipping on LiveNOW
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- เผยแพร่เมื่อ 20 ก.ย. 2024
- Titan Hearings Begin
September 19, 2024
In this episode, Sal Mercogliano - a maritime historian at Campbell University (@campbelledu) and former merchant mariner - appears on LiveNOW to discuss the first days of the US Coast Guard hearing on the loss of the submersible Titan diving on the wreck of RMS Titanic.
#titan #titanic #coastguard
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US Coast Guard Hearings
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OceanGate implosion: First footage of Titan sub wreckage revealed | LiveNOW from FOX
• OceanGate implosion: F...
Sal having cover up his glorious Hawaiian shirt with that sport coat means no funny business.
No Bab-El-Mandeb today.
@@balaklava6420 no boozing during this interview
I think the shirt is trying to escape the jacket. Need to tie 🪢 it down.lol
@@JAW1992I bet Sal is also in his underwear and flip flops too
@@samvoulalis205 i love Sal and his shirts, just makes him more human and less the authoritarian expert type, even if he is actually very well connected and certainly very well respected, i could listen to him for hours, ooh i do ! hehe
Watching the hearing, Stockton Rush really was the nightmare spoilt-brat manchild of a person....The tale of him piloting a sub into the wreck of the SS Andrea Doria then initially refusing to handover the controller, only to relinquish it by throwing & breaking it is telling in itself...
Money doesnt mean intelligence. It often implies arrogance and lack of hubris. Rip the four innocent lives.
where are you watching the hearing please ?
Edit - no worries , I found it thanks
@@ThatOpalGuy On the contrary, hubris appears to have been one of the late Mr. Rush's defining qualities. I think you may have meant "humility".
He's crab poop now
Legal Vices (attorney who specializes in admiralty law) is commenting on the proceedings live. I had to chuckle when one of his viewers commented something along the lines of "could you get What is Going on With Shipping to comment on the coverage?". The host's reply was essentially, "Sal is huge, he doesn't have time for us." Kind of a roundabout compliment from a fellow You Tuber.
I missed that. Thanks for letting me know.
@@wgowshippingThat’s more than a roundabout compliment.
@@wgowshipping that would be a great show ! Legal Vices does some great maritime content
@@wgowshipping Hey Sal, update us on Dali leaving the USA. Hope she is forever gone.
@@gregoryhumphrey2831 She is sailing for Ningbo via Cape of Good Hope
Crazy how the CEO bragged about how undersea vessels in general have a great safety record, but also about breaking rules and not certifying (thus breaking the same rules that makes the others so safe)
Yeah I wonder if their safety record is because of their safety rules
@@SilverStarHeggisist Yes, just like airliners.
@Archangelm127 "Nahh, total coincidence! It's all about being better."
- Boeing CEOs
When the lead engineer says “I’m not getting in that…” (paraphrasing) that should be a huge “red flag”.
As the meme goes: "Sheer. F*cking. Hubris."
His testimony was bizarre. "I'm the most genius engineer in the world and did things at OceanGate that were amazing and I want full credit for that. And....I had nothing to do with any of the actual engineering on the actual submersible at OceanGate". WTF?
@@bees5461 Granted, I did not catch all the testimony etc. Merely stating what I heard via a few “journalist sources”. That said, his statements are a slight “disconnect” on his part.
@@malekodesouza7255 Totally agree with you. And, your original statement is absolutely true as well, I was watching it and you quoted it correctly.
With all the misinformation going on, your videos have been the only ones that I've been using to keep track of what's going on.
Scott Manley had some good videos on the subject. He's been able to compile some good info,
@@dongiovanni4331I agree but talking misinformation why is there a dinky little strap doing which appears to be holding the capsule together??is this really on the ocean floor?I don’t believe anything anymore js
I love how you threw on a jacket. Highly professional.
I can clean up when necessary...just not often!
Shave would have helped
As XCKD said: "You wouldn't really die *_of_* anything, in the traditional sense. You would just stop being biology and start being physics."
A pity they did not show the main body remains. It really put this into perspective.
It's been a while since I've seen XCKD referenced. I imagine it'll take a full day to catch up.
Although civilian submersibles are not their usual subject, the logistical and technical understanding of Sal and Aaron really showed during this event. Sal was getting high quality information out there when everyone else seemed to be completely hung up on tapping sounds.
Very good interview Sal.
I hope, at least that they are right: that the occupants of the submersible were not aware of what happened to them, because it happened so fast.
Implosions usually happen in about .015 seconds. Perception of pain usually takes .25 seconds. As far as they were concerned, they suddenly just weren't anymore.
If they didn't, the crash site would show a seemingly intact but flooded submersible with a microscopic hole.
@@KarlKarpfen I don't think it would even be possible for this type of craft to develop a slow leak.
Either it developed a leak via imploding or it doesn't develop a leak I'm pretty sure.
The images of the collapsed crew compartment are horrifying.
Fantastic interview Sal.
The imploded crew compartment is scattered everywhere at the bottom of the sea bed.
There weren’t any images of the collapsed crew compartment…
@@wrenboy2726 mostly out of respect for the victim's families. And, with that, I agree.
@@wrenboy2726 Yes there are Scott Manley has the footage if your interested. Fox just didn't show them.
@@wrenboy2726 It was actually video. If you go to the USCG Titan hearing page there are links to the two videos that have been released so far. I think there are probably more coming. So far one shows the discovery of the nose cone sitting upright on the bottom in surprisingly good condition. And the second one shows both of the end caps. One of the end caps has a ring that looks like it might be partially attached. Some of the carbon fiber is still attached, a fairly large piece. But it looks like a pile of carbon fiber all smashed together is sitting inside that second end cap.
Sal, as always, your intelligence shines through.This video reminds me why I watch your channel for technical news, and not shows like LiveNOW. I don’t know how you found the forbearance to avoid saying, “I just answered that question 10 seconds ago. Weren’t you listening?”
Looking forward to your full length video on the topic Sal.
Scott Manley has a vid explaining the failure.
Definitely worth watching! 😎✌️
What’s going on with Submersibles … ? Good to see you Sal .. and the Lego Globe 🌎
That there was no one for the main engineer that has been testifying (that wrote up the report to all of the company outlining everything wrong) to go to other than the fool responsible for it all is a rough pill to swallow. You could tell that he probably won't be getting over these events totally even though they were not his fault and he did all he could and was fired for his efforts.
Gotta love the fact check Google added.
Not really a fact check, but added context in this case.
Context?
What I want to know is why the f TH-cam feels the need to add a wiki on the Titanic?
That is a good question.
The words "diving on the wreck of RMS Titanic" were included in the video description.
Hubris, some Greek words really nail aspects of humanity.
Most shocking thing I saw was that they used glue to bond the metal ring to the carbon fibre, and there is footage of Stockton Mush standing there grinning as a man on a ladder in a white coat smoothed it flat with his hand. Guess where it failed...
1000 tons of tnt force input, thats in not out. it was heard around the atlantic. basically hiroshima level force inwards
Either Fox cranked up the exposure or you share an office with the sun. Great interview. Keep up the positive flow of information.
Those who study maritime history know about a novel written 14 years before Titanic sank. The book was "Futility"or "The Wreck Of The Titan". 112 years later, Titanic still holds our interest.
Well done Sal!
Scott Manley has a segment on how the titanium bulkeads were secured to the carbon fiber hull with an adhesive. Industrial adhesives are miracles of technology, but still... An aviation analog of this experimental design would be flying a homebuilt designed to be pressurized up to, say 150,000ft, with passengers on board the first time.
The video of the winding of the midsection shows a bad winding pattern. The pattern shows a resistance to radial pressure, but not to columnar pressure. Compare the winding pattern of the submersible to the winding pattern of the space shuttle solid boosters.Secondly, Carbon fibers are notoriously brittle; commingling the carbon with other fibers such as Kevlar or titanium increases the toughness of the material. On the original ice slough tests of the V22 Osprey the ice sloughed by the rotors shattered the carbon fiber body. To overcome the brittleness of the composite other tougher fibers were included in the V22 Body.
... and still then, carbon fiber and other fiber reinforced plastics are strong in tension but practically unsupported by their fibers in compression. Introducing other fibers won't help with this fundamental flaw in the material choice for a submersible, which has exactly one purpose: withstanding repeated cycles of extreme compression loads
@@KarlKarpfen In such composites the plastic body is supposed to take the compression stress internally the fibers distribute the load reducing catastrophic failure. The Plastic is often an Epoxy resin. High pressure/temperature epoxies are fair more able to resist compression. However water weakens epoxies and prolonged water exposure sometimes a cause of the plastic matrix failing. In aquatic applications a top coat of a polyester resin prevents water penetration into the epoxy matrix. So this begs the questions: 1.Was the composite section resin an epoxy? 2.If so was the resin chosen a high compression strength/modulus resin? 3. If so was the composite section autoclaved to the proper specification? 4. If so was there a protective topcoat to prevent seawater from weakening the epoxy? 5.If not what was the resin chosen and why was a weaker, lower modulus resin chosen?
@@moors710 That's right in general, nonetheless, there is no epoxy out there that offers sufficient compressive strength in the wet environment and with the expectable defects.
Awesome to see you gettin the air time! Lookin good.
The Backend fell off?
Are you sure you dont mean the Front fell off?
R.I.P. John Clarke
Nice job Sal! Looking good too!
I love how you just put on a jacket to go on "tv" hahahaha my man
Love the jacket, but you still got that Hawaiian shirt underneath thumbs up
I believe there is a peer review process that everyone else used. It was just this one company that ignored it.
There is no peer review per se. It's engineering, not science. There are several organizations that do certification. For that certificate Oceangate would have had to prove that they followed proper procedures, used good materials and practices and did proper tests. The certifiers would have asked some rather pointed questions that Mr. Rush did not like to answer. Hence he did not invite them to talk. Or look.
Hi Sal, very professional appearance as always. 📺
So they littered a bunch of steele pipes on the ocean bottom every time?
Love the sport coat Doc 😁
Great reporting of a sad subject.
Thanks Sal
It may have gone underwater, but calling it a submersible is generous.
Thank you for keeping up with the trends, as well as using alternative view angles. 😎👍
Im glad you found that video. 😊
Great segment Sal! I only have one critic, I think you should of snuck in a Bab al-Mandab randomly towards the end. Haha just kidding, thanks for all your great insights and expertise.
Unbelievable. I hope they recover the wreckage and piece it back together.
Remember the little people, Hollywood Mercogliano
😅 Cut Sal a break, OK? 😉
My thoughts are still with the experts who safely build, test, and use their vessels with purpose rather than profit. Much effort towards designs that have to work the first time or the strict funding is taken away.
This part reminds me of spaceX and their many failures they can afford without risking the funding.
Our boy Sal on the big screen.
I heard that OSHA was notified of the concerns and issues that the engineer had, but did not follow up.
That part, the white backend is the non pressurised section.
Fox news doing a great job explaining to people.
Carbon Fiber is excellent resisting stress in tension. Compression, not so much.
I've been making that point about this for some time. Anybody who knows materials or submersibles could have predicted this, and many did. I'm an aviation nerd, so carbon fiber properties are something I'm familiar with. I saw footage of them winding a tube out of it for the pressure vessel and my first thought was that it would kill people.
Did he really just say, "It surfaced during this hearing...." wow
Hubris is how the implosion happened.
And all of the, um, _contents_ of the sub are in the dome opposite the porthole end.
Now there are two shipwrecks at the site.
Good interview ❤
I suspect that there will be far fewer megalomaniacs building their own submersibles when the dust settles.
Lmao! I love that you are wearing a dinner jacket over your Hawaiian shirt.
Sal, you dressed up, thank you for your input.
There’s more footage showing the front hemisphere laying on its own, and the aft portion of the pressure vessel with the mangled remains of the pressure vessel shoved into the aft hemisphere.
Sal‘s not a Hemi driver!
Just being sarcastic, I love your work.
I'm wanting to hear more about the use of carbon fiber as a vacuum vs pressure vessel.
Might add shape of the item - it was a cylinder not a sphere and its wrapping was not an X style but round like wire on a winch drum.
Carbon fiber is fine for pressure vessels if you control your seams properly, i.e. the 787 or rocket fuel tanks.
Where this went wrong is the dissimilar material used for the ends. The end caps and the cylinder were always going to compress and expand at different rates, stressing the joint. No adhesive was going to remain sufficiently flexible and strong in that application, especially in the cold water. Metals can deform but carbon fiber fractures, so once the two got far enough apart, the carbon fiber failed.
Definitely a case where there's a legitimate reason we've always done it that way, and there's a strong burden on the newcomer to prove the new way is better.
any plan on making video about the constellation and compare it with the lcs project?
The only thing still working on the sub....ratchet straps? Fascinating.
Sal, you covered up that beautiful shirt with a "news worthy" blazer. whats next a submariner and cologne, JK. love the info you put out.
Thanks!
Welcome!
Amazing how the fairwaters are so unaffected by the pressures at depth.
Because they're free-flooding there's no pressure differential to deal with. The net stresses aren't markedly different than sitting on the deck of the launching ship. As long as you don't have bubbles in the material during production (see images of Styrofoam coffee cups taken to depth) there's nothing to fail.
Was that a friggin ratchet strap?!?!
Yes. Or rather a "flexible circumferential non-pressure hull binding device". They also had several "ad-hoc quick-installation fixtures" (zip ties) attached to cables and thrusters in place of ordinary old fashioned screws and bolts. With the thrusters reportedly exhibiting a somewhat "stochastic work profile" on occasion.
Exactly the kind of “device” and “fixtures” needed to make inspire confidence with potential clients and passengers…
Nice one sal!
"At some point, safety is just pure waste" - Stockton Rush
Scott Manley has a good video as well.
When it comes to the announcement of the hearing I believe it had to be posted in the Federal Register and some newspapers. The problem is, who reads newspapers?
This hearing is for the Marine Board to hear from experts. The hearings to look for are entitled Notice of Proposed Rulemaking.
Hopefully, USCG's Merchant Marine Technical (MMT) will set up a committee to draft rules. This was done for Vapor Recovery. Captain Gordon Marsh, USCG (Retired) led that effort. If I was the USCG I would recruit Gordon to lead the rulemaking process.
Ah, RIP Juan Tripp. Founder of PanAm he was a "Barnstorner"; dangerous & noisey - then fell in love. Her father refused the marriage, but he found "Betty". Still enjoying dangerous flying experiences,
he founded PanAm. Any expense to protect his flyers. Crazy flying was a private affair. A truly great man vs a gasbag.
Liked your shirt, Sal
Sal, you said something about no fatalities in submersibles but what about the Russian sub that went down with 118 souls? There was a TH-cam video explaining what happened. It was in the Baltic Sea.
Watching you brings up lots of interesting TH-cam videos about seafaring!
Thanks for sharing your knowledge.
Submarines and submersibles aren't exactly the same thing. But even so there aren't many fatalities in submarine history if you don't include war losses. Compared to airplanes submarines are very safe, especially since the 70's.
This make me think about plane crossing the atlantic and all that died trying.
I’d like to know why or how did the ratchet strap get on that piece of the sub
At 2:00, was that strap original? It seems out of place.
Seems like the reporter was in search of a conspiracy with his original line of questions. Sal does a nice job explaining how the process works and what the ultimate goals of the USCG likely are.
What was that black strap for, the one around the body of the wreckage?
When you see the sport jacket, you know its time to put on your game face.
The Ocean said, "Who wants to die today?" 😅
When Sal puts his blazer on, I shut up and listen!
Wow...that is a hell of a blazer.
it just looks wrong not seeing those shirts!
scott manley made a good video about what he thinks happened based on the released video
"Don't say nothin' SAL !" Vito from the Sopranos.
So sad to see that, but interesting.
Have you seen the situation with MV Ruby and her potentially explosive cargo heading to Klaipeda?
It was not a safe process because a single person could trivially subvert the process.
Submersibles are not really super safe, they are just rarely used (statisitically).
Hawian shirt - jacket combo. Business-aloo.
Wow is it possible how the designers missed the fact that while carbon fibre is strong in tension, it is weak in compression !
Carbon fiber is miraculously-strong in tension, and merely very strong in compression. It is far from weak except when compared to itself.
Anyone want to explain the strap holding things together in that photo on the ocean floor?
That section is attached to the rear of the Submersible outside the pressure hull. The strap keeps the white covers over the mechanical and electrical components.
@@wgowshipping quality build
Love comparing Ocean Gate to Triton Subs. Triton Submersibles pushed the boundaries with their Plexiglas pressure vessel. While not a novel material it was never used in such a way before. They tested and tested and made it work. Titan does something similar but ignores industry concerns and very little testing. I am going to take a guess and say it was a brittle fracture of the composite and or glue around the titanium ring caused by cyclic loading and the different rates of expansion and contraction between the composite and the titanium. No engineer just a mechanic but the design of those areas raises massive red flags for even me.
At. :35 sec what is the strap around the Titan FRP hull covering?
Do we really want to know the answer to that given the stupidity of the operation? It could make the situation all the more horrifying. Hoping it was just left overs of the straps that held it down for transport out to the site and not anything...structural...
That holds the covers in place over the machinery and battery components at the rear of the submersible.
@@LackofFaithify It is still a question and it still needs to one of the question asked and hopefully answered at the inquiry.
@@LackofFaithify Yes, we really do want to know the answer, that portion was the aft end of the submersible, as shown in inset illustration at 6:14, and was an unpressurized equipment bay with that strap securing the fairings/shroud which created smoother water flow around that section.
Electric Boat, Newport News, Portsmouth Naval S/Y.
The gurus to get help to design undersea craft.
Yup, Rush will be famous for breaking the rules.
implosion bombs are better than nukes ngl
Well the sub was absolutely trash and the families should get everything
Having a very active imagination doesn't help one looking at that mess....but it makes sense that the failure was probably the glue on the forward titanium ring. This would be the ring that was repeatedly subject to the strain of having the cover bolted on and taken off....
Scott Manley just made a good video.
He was saying they tested it with a steel ring and then glued a titanium one which had a different expansion rate.
You don't glue metal to carbon fibre like that, it's not like this but picture the correct way as using a rawl plug with a screw. If it helps if it were going to fail, then that's the exact point you want for the occupants, no creaking, odd noises or visible cracking just lights out before your brain can register anything.
Carbon fiber is generally not well suited for compressive loads. It handles tension and shear loads much better.
@@792slayer Carbon fiber handles compressive loads extremely well, compared to most other materials. It just handles other loads so much _better_ that we expect miracle-material performance out of it when it's merely very good.
@@meritwolf219 my understanding from reading the material property sheets a while ago was that under compression, the majority of the strength is provided by the epoxy that bonds the fibers, with the fibers themselves providing relatively little strength in that mode. From what I was able to gather, strength can be increased by using certain weaves or layering methods, but compressive loads aren't where carbon fiber really shines. Granted, I was reading the documents probably 15 years ago for a design project I was considering, so things may have changed.
Of course the globe is positioned correctly 👍
Q: Who put the cam lock friction cargo strap around the rear section on the sea floor?
You may not write off the technologies abord this submersible, but all experts on submarine engineering wrote off one technology beforehand: fiber reinforced plastic, no matter which kind, especially attempts to sandwich it with titanium
Why? Because it is known that they can't withstand compression loads very well and they do crack ever so slightly with every compression load cycle, so the carbon fiber hull was known to get weaker with every dive. This wasn't theory only either, as in the 1970s, some companies tried that with non-critical submarine equipment to find out that it breaks quickly, but not during the first cycle.
The problem won't get better with a pairing of two different materials with very different shrinking speeds under pressure.
Seeing a ratchet strap around that large chunk is weird. And if it imploded how could the strap possibly keep tension on the vessel at such deep depths? It seems logical the strap would simply fall off
That portion of the vessel was unpressurized. It filled with water (which is incompressible), and thus couldn't implode.
Don't go to the bottom of the ocean in a Pringle can
Lookin good Sal….
It was a mousetrap for billionaires