Great idea for an underwater inspection

He says 15mins underwater at the end !!!!! With those two tiny tanks ??

Maybe I'm only one who noticed - but the video is definitely NOT one swim session ... watch closely and you see the apparatus on different arms in various sections of the vid.

One important aspect he doesn't mention - EXHALING spent air ... we see him do it in the water - but he conveniently leaves that bit out ...

If I was to think about any apparatus - TBH - I would look at tyhe SWBA .. designed for boaters !!
 
Refueler said:
He says 15mins underwater at the end !!!!! With those two tiny tanks ??

Maybe I'm only one who noticed - but the video is definitely NOT one swim session ... watch closely and you see the apparatus on different arms in various sections of the vid.

One important aspect he doesn't mention - EXHALING spent air ... we see him do it in the water - but he conveniently leaves that bit out ...

If I was to think about any apparatus - TBH - I would look at tyhe SWBA .. designed for boaters !!
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15 minutes might have been his other device as I agree that those two tanks would be much shorter .... a couple of minutes I would guess.

Would one just exhale through the nose to avoid wasting the air in the bottles?

Richard
 
RichardS said:
15 minutes might have been his other device as I agree that those two tanks would be much shorter .... a couple of minutes I would guess.

Would one just exhale through the nose to avoid wasting the air in the bottles?

Richard
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Think about real SCUBA gear and how long they have .... and the size of tanks they use with special Demand valves etc. to control air use. The pressure they are filled to.

In the Video - he is clearly exhaling mouth and partially nose ... not something the average inexperienced diver would be good at.
 
OK, those little bottles he’s using look as if they hold perhaps 250 ml, so 500ml total. The bottles might be able to be pumped up to, lets be generous, 20 bar. So the total of 10 litres of air. Most people use about 15 litres of air per minute, so there’s less than a minute’s worth of air in the bottles. Therefore a total waste of time and energy in terms of extending the amount of time you can spend underwater.
I know where the Layabout is coming from: there’s a constant stream of well meaning folks pushing weird and wonderful “answers” to extending underwater time most of which are, at best, unworkable or, at worst, downright dangerous. This one comes under the unworkable heading.
 
duncan99210 said:
OK, those little bottles he’s using look as if they hold perhaps 250 ml, so 500ml total. The bottles might be able to be pumped up to, lets be generous, 20 bar. So the total of 10 litres of air. Most people use about 15 litres of air per minute, so there’s less than a minute’s worth of air in the bottles. Therefore a total waste of time and energy in terms of extending the amount of time you can spend underwater.
I know where the Layabout is coming from: there’s a constant stream of well meaning folks pushing weird and wonderful “answers” to extending underwater time most of which are, at best, unworkable or, at worst, downright dangerous. This one comes under the unworkable heading.
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For dive planning purposes, the generally accepted rate of air consumption at the surface is 25lpm. That increases pretty rapidly if one is being physically active.
 
As a qualified diver, I believe it answers a need. Just the job for nipping below the hull to check the prop. A few trips might be enough to clear it.

I see very little risks and its impossible not to be aware of the limitations.
 
Those are tiny little things, you wouldn't even get one decent breath out of them. If you want one for boat inspections then look at a hookah system or one of those small pump up pressure tanks.
 
Tammany said:
Those are tiny little things, you wouldn't even get one decent breath out of them. If you want one for boat inspections then look at a hookah system or one of those small pump up pressure tanks.
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The video doesn't seem to agree. You only need a few breaths for a quick look at a prop. There is also an obvious advantage over a hookah - cost!
 
Graham_Wright said:
The video doesn't seem to agree. You only need a few breaths for a quick look at a prop. There is also an obvious advantage over a hookah - cost!
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Don't belive everything you see in videos. How is he breathing exactly? Snorkels expel air out through the tube, this is connected to a pressurised container. Scuba gear uses a regulator that expels used air and then allows you to suck more air in. This snorkel mouthpiece is freeflowing so expelling air would have to be done by removing the mouthpiece. This will only give air when pressing the button so will be an awkward thing to use. A 500ml metal pressurised bottle only gives 4mins of scuba time. These little plastic things will give one breath if you are lucky. An inflated ballon would do more or less the same thing.
 
Tammany said:
Don't belive everything you see in videos. How is he breathing exactly? Snorkels expel air out through the tube, this is connected to a pressurised container. Scuba gear uses a regulator that expels used air and then allows you to suck more air in. This snorkel mouthpiece is freeflowing so expelling air would have to be done by removing the mouthpiece. This will only give air when pressing the button so will be an awkward thing to use. A 500ml metal pressurised bottle only gives 4mins of scuba time. These little plastic things will give one breath if you are lucky. An inflated ballon would do more or less the same thing.
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My head is equipped with two breathing orifices. Your's?

He's exhausting through his mouth.
 
duncan99210 said:
The bottles might be able to be pumped up to, lets be generous, 20 bar.
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I think thats generous to the point of absurdity. I’d be quite surprised at a tenth of that. The flow rate through the spray-bottle’s valve is also going to be tiny, as confirmed by the modest stream of bubbles shown in the tank. That’s far less air than a human inhalation needs.

The whole thing is an obvious fake to gather Youtube views. In the swimming shots he’s just breath-hold diving like any snorkeler.

Something this size providing a few useful breaths could be made, but not by gluing household objects together.

Pete
 
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