Unknown device - what is it?

[Sergik]

Who knows anything about this?
http://www.vodolaz.org/shahlik/13806.jpg

 

[billtodive]

Sorry, I couldn't resist the temptation to make a joke.

Seriously, it looks like a surface supplied air source. Others on this forum are much more familiar and can maybe tell you much more.

 

[miguel sanz]

Sorry, I couldn't resist the temptation to make a joke.

Seriously, it looks like a surface supplied air source. Others on this forum are much more familiar and can maybe tell you much more.

that´s what it is. Here in BArcelona took place this weekend the annual diving convention, and I saw the device, amazing.
They promote it as a family activity, of course only for shallow waters.

 

[Sergik]

that´s what it is. Here in BArcelona took place this weekend the annual diving convention, and I saw the device, amazing.
They promote it as a family activity, of course only for shallow waters.

So, is it a tech-snorkeling device? How does it work?

 

[gj62]

There's an air compressor at the surface, and a "first stage" that delivers a constant pressure. The diver is usually breathing off a normal 2nd stage. There's also usually a harness that the surface hose connection is attached to to prevent pull on the 2nd stage.

We used to sell a few each year to people that were mining gold up in the Sierra's in California. Obviously, there's an entanglement factor that limits its use in certain areas.

 

[The Chairman]

That doesn't look like a normal 2nd stage coming from her mouth, but more like a tube. Given the size of the hose, and that it does not look like it could withstand 140psi, I would say that they are delivering the gas at the ambient pressure. I would love to inspect one of these, not that I would ever want to dive one... but I would like to look one over.

 

[gj62]

That doesn't look like a normal 2nd stage coming from her mouth, but more like a tube. Given the size of the hose, and that it does not look like it could withstand 140psi, I would say that they are delivering the gas at the ambient pressure. I would love to inspect one of these, not that I would ever want to dive one... but I would like to look one over.

Doc, you're right. I didn't bother to enlarge the pics, but when I did, I see what you mean. It would have to be delivering air at *some* pressure greater than surface - but I don't know how it is determining what it should be. That pack on her chest might have something to do with it, but my guess is that this is severely depth-restricted.

 

[yoda4x4]

Since I've never done it, I cannot say with 100% certainty. But with that said, I believe she is doing what is commonly called Snuba. It's a cross between Scuba and snorkeling in that you don't carry a tank like with Scuba but do have a supply of air provided to you. This is something that alot of resorts do for those who aren't certified for diving.

David

 

[gj62]

Since I've never done it, I cannot say with 100% certainty. But with that said, I believe she is doing what is commonly called Snuba. It's a cross between Scuba and snorkeling in that you don't carry a tank like with Scuba but do have a supply of air provided to you. This is something that alot of resorts do for those who aren't certified for diving.

David

I don't think so - all the Snuba units I've seen use a normal 2nd stage.

 

[Don Burke]

Maybe a version of this?:

http://www.ssuba.com/