Diving bell boat: Walking down to the Rhine's riverbed 

Makes you wonder how much technology the government is hiding

I'm 49 never heard of it,would lv to go down walk around

I had no idea this kind of thing existed, but it makes sense. It's essentially a mobile caisson. A great book to read is David McCullough's "The Great Bridge" about the construction of the Brooklyn Bridge. The foundations for the Brooklyn Bridge towers were made in a similar way, with caissons sunk to the bottom of the East River, pumped out with compressed air and men within them directly digging out the bottom of the river. Many died of compression sickness, which was not understood at the time.

@@cv990a4I wonder if they have to decompress coming up from this?

Is really no technology at all. Turn a glass upside down and sink it into the water.

Not necessarily, maps show that the romans settled there in 800 BC and between then and 1000 AD drained a lot of the peatlands. Its moved under human influence. Both the beginning and the tail.

@@Laura-wg7mgLook everyone it’s A FUCKIN NEEERD!

I do that in my backyard in Texas every day

@@Laura-wg7mgalways one. Any need ? You know what they were meaning but you couldn’t leave it at that. Wow. Its not a competition.

The path of rivers aren't constant. Of course, well-managed waterways like present Rhine changes very little, but before large permanent settlements, the river went where it wanted.

At least a RU-vid channel documenting the stuff they find

Totally agree!

Absolute

Same ❤

Ditto here...underwater footage from within the diving bell would be a welcome addition to said show! 😂

Oh no, you don’t know do you?

I’m surprised he hasn’t actually, this boat is right up his alley. Too late now I suppose

@@xploration1437 I'm just lamenting... hope he is enjoying the long overdue Vacation!

Come back to us Tom!!!!

He's a racist. Why would you support a racist?

EXACTLY! 💯

You ought to see how they weld pipe underwater a different type of diving bell but pretty much the same principle

Right? there's a ship that lowers a tunnel in the water and pushes air in and the water is pushed out and you can go down the stairs in the tunnel at the bottom of the lake . Yeah right... sure...

Innit

John Wright- Washington

What’s impressive is that this isn’t a new process either. They’ve been doing this since the 70s

This Thomas Bach is doing something useful - not like the other one....

It would be more interesting than all the other reality show garbage on TV, and therefore not very popular. .

Mp3 players, old beer cans, lost keys, a ring...

They mentioned the abrasive effect of the tumbling rocks, it probably results in any ancient items being ground to dust.

I think it has like a rubber seal and any of the water trapped inside the bell as it sets down simply flows away through the gravel

Compressed air is pretty strong. I think if the bell weren't pressurized some water would force its way in until the atmosphere was compressed enough to resist it, so by making that pressure beforehand no water gets in.

Use a hollow bottle with a big open wide mouth. You will be able to demonstrate this ability. Trust me as long as you maintain pressure inside without moving the bottle too much the water won't get in not even an ounce. Not a drop. The moment you lose pressure it goes in.

Tell us you didn't do well in science class without telling us.

Except for the part where it makes you tired very fast.

If it was a glass bell, that would take off....

@@halberderdier8073the Rhine has zero visibility so there would be nothing to see.

@@teeanahera8949 -- Agreed... It would be like having a picnic in a round brown room...

@@TheNefastor Indeed, but so does having lunch up on top of Mt Titlis. 😀

I hope, the "ARCHIMEDES" has some kind of air condition for the air in the bell. We could use a ship like that on the Danube river.

Well the closer to the Netherlands you come the more mud will be on the bottom

That is fascinating-I've only seen it in rock strata and of course small shallow streams. In the study of Sedimentology (Geology) that part of the sediment in a stream is called the Traction Load, which bounces (through the process of "saltation"), and also rolls along the bottom along with the current. If the current is swift enough, smaller sized particles will remain in suspension as the Suspended Load until dropping out in slack water forming sand bars. Very fine (mud) particles are called the Wash Load and they don't settle out in the stream at all and will stay suspended until finally dropping out, well out into the sea.

Fast flow = no mud. All the sediments are being carried by the water. Even the stones on the ground are rolling. Slow flow = sediments sink down and we get mud.

The interesting part is: Where's bed rock? Where are the edges that collect the big nuggets?

And the treasures

@@hugoagogo4324 -- Old corroded beer cans... Some of us can remember when beer cans were made from steel...

Not a new invention, diving bells with air pumped down were used in the 1800s.

😅😂😂

Thank you for your service.

I came from LinkedIn, where much instagram stuff is plagiarised these days, in the name of business!

No

Me lol

No.

Me

It only works in relatively shallow water 7 m in this case so it’s not suitable for anything much deeper. The workers would need decompression if it were deeper and therefore much higher air pressure.

It would have to be a very shallow sea, as spending enough time on the bottom to have lunch would require decompression stops on the way back up if it was too deep.

Don't give then ideas..... you know they will just suck more money out of everyone else to do this

@@delboy1727 Not unless they get wet! If the pressure is kept at around 15 psi they would be fine.

They seal that bell by keeping the air pressure inside slightly higher than the pressure of the water outside. Therefore the deeper they go, the higher the pressure inside the bell needs to be to keep the water out. 15psi is the pressure at 1atm, i.e. at the surface. If the bell went down to 20m, the pressure inside would need to be at about 45psi, otherwise the water pressure outside would be enough to flood the bell. I believe that bell only goes to a maximum of 10m so the pressure inside will only be about 30psi to keep the water out, but even so their work time is not infinite, as even breathing air at that relatively low pressure will still lead to a build up of nitrogen in the blood stream.

​@@delboy1727 But decompressing with a high oxygen atmosphere works fairly fast for the pressures even from equilibrium: you can pretty much just give them 1 normal atmosphere of oxygen to let them breathe off the nitrogen, slowly dropping total pressure down to ambient, and give them a bit more of the high oxygen to deplete their nitrogen further. The oxygen bound to your red blood cells increases the maximum O2 partial pressure you can have without getting oxygen bubbles, so mild oxygen-only decompressing is actually totally safe.

Wonder how old that plate he picked up was

it said Ikea on the bottom. Late Viking I guess. @@onemoredeadman

They use a somewhat similar thing for archeology, where they drive a huge steel tube vertically into the water and several meters into the river/lake/sea bed, then pump all the water out. A couple years back the Dutch Navy did it in the middle of the IJsselmeer, during WWII a British bomber had gone down there and they wanted to recover as much of it as possible and give the airmen a proper burial. It's pretty crazy seeing the pictures of that bomber laying there in the mud, it's engines and propellers still clearly recognisable.

Probably not economically viable. This thing will cost thousands of euros per day to run.

the ship was 60+ years in service without a single life lost on the job ... very far from the most dangerous job. statisticly its the safest job so far, lets see how well the replacement will do.

You are, quite literally, wrong. You also don’t know what the word ‘literally’ means. The divers at the bottom of an off shore oil well that got sucked through a 5cm hole would have disagreed with you too.