Titanic tourist sub goes missing sparking search

[berndo]

This is a journalist quoting an engineer, so we know how accurate that usually is. Plus this an engineer from the team that built the Deepsea Challenger, so I think he probably knows more about it than you or I do.

A quote is usually what the person actually said. There are incompetent people in every field.
It' not possible to poke a hole into any room with 1 bar inside and have that space only fill up partially or half, when the outside is water at 300-400 bar.
The water that rushes in will compress the remaining gas to whatever pressure the surrounding water is.
At depth, the hull can only be either completely dry or completely flooded.

 

[Dody]

I always feel uncomfortable with those so called experts. Vulture is a name that suits them better. The Titan is lost and then, you have all those guys showing up on TV talking about safety issues, the personality of the company CEO… They don’t have a clue about what happened but already shoot on the ambulance. I have never seen those vultures coming back on TV once the facts are known saying: I was wrong which they are very often. Had Deepsea Challender have a problem, they would have said that James Cameron should have stuck to film making. The same people who buried Elon Musk even before he launched his first rocket. Talking without knowledge just to show off. Vultures. Let’s not do the same.

 

[Manatee Diver]

This is a journalist quoting an engineer, so we know how accurate that usually is. Plus this an engineer from the team that built the Deepsea Challenger, so I think he probably knows more about it than you or I do.

Except it doesn't seem workable.

I could see it if the submarine had a pipe burst and they managed to close the pipe to stop the water ingress. Something similar to what happened to the Thresher or Barbel. But the Titan doesn't have any through hull fittings, it is a solid pressure vessel except for the door. In fact that is one of the concerns as there is no mechanical release for the ballast just an electronic one that relies on wireless communication between the controls inside the hull to a control box mounting on the outside.

So it doesn't seem likely that any source of flooding would be manageable by the crew inside.

 

[Dan]

Update from 3 hours ago:

 

[Gone for diving]

In fact that is one of the concerns as there is no mechanical release for the ballast just an electronic one that relies on wireless communication between the controls inside the hull to a control box mounting on the outside.

Don't know if its true.
But some people say it has dissolving bolts that release over time....

If the hull is breached it will not help.

If the hull is intact. And not tangled or trapped.
It should help.

What is amazing to me is that it doesn't at the very least have one stand alone multi directional pinger
That goes off after a certain amount of time.

We even have the technology
To send out a certain frequency and active a function to release stuff from underwater like a bouy or in this case, weight or a float of some kind. Or even turn on a super strong pinger.

 

[telemonster]

Some articles talk like nothing goes through the outside walls of the people chamber, but this video describes a hydraulic operated pump that drops weights. Also a 10k psi tank that fills a lift bag.

This is a pretty good video, I'm going to check out his others.

 

[Wookie]

Don't know if its true.
But some people say it has dissolving bolts that release over time....

If the hull is breached it will not help.

If the hull is intact. And not tangled or trapped.
It should help.

What is amazing to me is that it doesn't at the very least have one stand alone multi directional pinger
That goes off after a certain amount of time.

We even have the technology
To send out a certain frequency and active a function to release stuff from underwater like a bouy or in this case, weight or a float of some kind. Or even turn on a super strong pinger.

I’ve piloted a lot of boats walking ROVs. The pinger is always on, always self reliant, containing it’s own batteries.

I’ve tracked and recovered a lot of very expensive practice torpedoes. Way more expensive than the real thing. The pinger activates at the end of the run, and pings for about 24 hours. Not as robust as an ROV pinger, but if you don’t get it in 24 hours, you’re probably not going to.

This is not experimental technology, and I don’t know enough about OceanGate to know why this sub didn’t have one, or if it did, but if not, that’s criminal IMO.

 

[Gone for diving]

I’ve piloted a lot of boats walking ROVs. The pinger is always on, always self reliant, containing it’s own batteries.

I’ve tracked and recovered a lot of very expensive practice torpedoes. Way more expensive than the real thing. The pinger activates at the end of the run, and pings for about 24 hours. Not as robust as an ROV pinger, but if you don’t get it in 24 hours, you’re probably not going to.

This is not experimental technology, and I don’t know enough about OceanGate to know why this sub didn’t have one, or if it did, but if not, that’s criminal IMO.

Yep not having one would be shear stupidity, (not to mention self preservation)and you should not be building a sub, or maybe hire a few white old guys,

Trying to find a minivan, 12000ft away, in the dark, over a range of a small town.. with no active pinger....

The titanic was has hard enough to find, and they where looking for a huge debris field. Not the actual wreck

 

[Manatee Diver]

Some articles talk like nothing goes through the outside walls of the people chamber, but this video describes a hydraulic operated pump that drops weights. Also a 10k psi tank that fills a lift bag.

Probably going to have to wait for a Youtube video after the fact going over the engineering, probably after any lawsuits are settled that goes over it in detail.

 

[BoundForElsewhere]

I really don't think that "one button" concept was a very good idea. Can you imagine even an airplane with just one button?

I am really, really hoping for a miracle because at this point, it would have to be a miracle they survived.