What Happens As I Run Out Of Air? - S10E11
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- เผยแพร่เมื่อ 4 ธ.ค. 2019
- Divers are trained to avoid Out Of Air situations but if it did happen, how would I feel? Alec shows what an Out Of Air diver would see and feel as tank pressure approaches zero. Always monitor your air supply and dive within your abilities.
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"If you are walking down the street and run out of air is a different story" :) hahahahaha, great Alec
Very informative video and again you teach us a good lesson. Thumb up!
This channel is a goldmine of information, it answers so many grey area questions/scenarios that you d never get thru bog standard training, great to be able to learn off others experience!
Only had one low air incident. Sea lion wanted a hug.
Was waiting for you to pass out from hyperventilating. Always enjoy and learn from your videos.
Many many years ago I had a flight instructor with exactly the same style and mannerisms during instruction. I couldn’t wait for my flying lessons to get the best instruction advice, and way of thinking from him.
He has past away at a ripe old age, and I retire later this year after a very rewarding aviation career, and my beloved instructors words still echo in my head every flight.
You sir, will have your voice echoing inside your students that you taught to dive safely. That is what makes the difference between instructors and masters of instruction.
Thank you very much for the kind feedback. Other than my dear wife, you're the only other one who can take my talking for very long, ha! Only took me 60+ years of practice to be this cool. Take care and thanks for watching.
I heard that running out of air causes a mess in the wetsuit too. Is there any truth to that?
Exactly...don't let it happen! Watch your gauges!
Had that happen to me at 100’ down in a Gulf of Mexico ship wreck only 250 psi left bolted about 50’ horizontal towards the moor line. swim up ran totally out of gas at 30’ from surface. It felt like breathing in a empty 2 liter bottle of Coke.
Same here, on my very first open water certification dive. My buddy disappeared, I lost track of time, didn't even realize how low on air I was (back in the 60's - no SPG). Wasn't down long enough to even build up any nitrogen. I didn't panic, went up slow from around 90 feet or so and surfaced without any problem. I was off the coast of Catalina Island and the biggest pain was swimming back to the boat on the surface through all the kelp.
where was your buddy may i ask
As you demonstrate, it will get noticeably and increasingly harder to breath as soon as the pressure drops below the intermediate pressure put out by the second stage, ie about 10Bar/150 PSI. At the surface that could be 6 minutes but it will be less at depth and if stressed. But if you breathe normally and don't hyperventilate you still have enough to do a controlled ascent, even from 100 feet. I've done the sub escape routine from 100ft and that was without any air supply at all! But keeping your instrument scan going and staying close to your buddy is always good. Or as I was told, 'A great diver uses their great experience to avoid situations that might require them to use their great skills'.
My favourite out of air experience was on a rescue course when acting as an unconscious casualty. The students took a little while to find me and when they did the guy doing the lift seemed in a great hurry as he grabbed me and dragged me up. Afterwards he confessed that he'd been so caught up in the scenario and the search that as he reached me he realised he had only 10Bar left. I'd been just chilling and had about 150Bar and would have been quite happy to share if he'd let me know he had a problem. A real issue always trumps a training scenario!
Tim I did run out 12:30 one Fri Night. Under the Liberty Ship Edwards about 20 ft back under it. Much led up to why this happened. My Diving at Night for Flounder for yrs & complacency & more Flounder than we had ever seen before... But when it happens you Can NOT Control your Heart Rate nor your Breathing..... I can tell you... My great Dive Bud seen me Bolt for the Surface... Caught me at 70 FT as I had already Stoped Kicking could only focus on pulling gas from my Regulator.... He had borrowed my 100 Qubic Ft tank. Another factor in why this happened. Very strong current that night. We buddies up on my 100 to the Surface. A very intense Headache hit me soon as I hit Surface... We whent Right Back Next Night Dove Same Ship Again....
@@lbbradley55 Thanks for sharing. It's only by people talking that we can all learn. The lessons are always obvious afterwards so it's important to understand how these situations develop. Everyone gets distracted sometime and it's important to recognise that task focus can be all-consuming. People do have to train to recognise when their situational awareness has diminished, and to anticipate circumstances when it's likely to happen. In aviation we used to say 'Rule number one: FLY THE AIRPLANE!' In diving it's buoyancy and gas. Keep those two squared away and then deal with everything else, even if it is just filming the fish!
I hope everyone realizes it will be a lot faster if you’re underwater. It will take a lot more air to fill your lungs than at the surface.
In my open water class, I learned the best way to no air is to know air. Merry Christmas Alec.
Love this guy. Great job 👍
I’m not even a scuba diver.....but the charisma of this guy is what I would want if I was being trained
Try scuba at your local dive shop or pool. You will love it and become as cool and full of charisma as me!!! Well full of something anyway.
@@AlecPeirceScuba_SeaHunter thanks for the recommendation! I’ll check my google maps to see if there is anything around me ^^
I would think letting students do this exercise as part of their training might make them more comfortable should it actually happen during a dive. Seems to me, an inexperienced diver that lets his/her air get that low, would be more likely to panic during an out-of-air type situation. Having experienced it beforehand might prevent that panicky feeling so they can be rational and act, rather than react.
Thanks another great video! I’m still patiently wait for your video on Full Face Masks! 🤓👍
Thank you and Merry Christmas
This is what the scuba tram is desling with.
Thanks.
A
Great presentation Alec! Love the polo shirt. I’d buy one👍🏽
When I got certified about 12-13 years ago, the instructor had all of us kneel down in the pool. He then went around to us one by one and would tap us on the shoulder and then turn off the tank slowly. Now obviously he told us what he was going to do in advance. The point was for us to know the feeling, and it was a very good lesson. I've had it before where after I do my safety stop and am right back by the exit point, I'll hang around in the shallows a bit longer and have I think once noticed the feeling start ever so slightly. Of course I just popped my head up at that point since my back was already out of the water and had been since before the red.
That training is (or was) part of the PADI Pool Skills and I agree that it's a good idea.
And your practice of hanging around in 10' or so at then end of a dive is good too.
Always be sure to come up with a little bit of air (100psi?) so you don't have to pay for a visual.
Alec
Sensible and instructive as usual. During my training, which was 1 to 1 ,as they were not busy, my instructor made me run low on air so I would remember how it was and not panic. Is this not usual? He made sure I was ok breathing from his octo first by the way.
Hey Alec, thanks for the videos, keep em coming! I learned more from you in a few hours than from my whole scuba course. Say, could you perhaps talk about digital dive logs sometime? I've heard a lot of them, there are hundreds of apps out there, but I couldn't find any info on how to separate the wheat from the chaff.
I did exactly this underwater (about 10m down) as part of my OW training... My instructor told me exactly what was going to happen and the whole idea of this was to experience by myself what you Alec just shown so explicitly... You feel you are running out of air before it happens, and I was using a cheap Scubapro MKII, nothing fancy... The exercise was at the very end of the dive, after being a few minutes at 5m... we went down to 10 and breath heavy and purged the 2nd stage well into the red zone... then started breathing normally until the difficult was evident... I even got to put some more air in my BCD and go up slowly, breathing (with difficult) all the way up to the surface. Very good experience as part of the OW training (PADi). I know is not part of the course itself but the instructor asked me and told me everything step by step... After that, I cannot understand how someone can unexpectedly run out air with no equipment malfunction as the only explanation...
Apart from malfunction, which is why you stick with your buddy, it's almost always distraction. And the thing about distraction is: you don't realise you're distracted unless/until it bites you.
@@timgosling6189 certainly Tim, you nail that... and I presume that is the reason my instructor wanted me to practice that... hard to be distracted when sucking air is becoming increasingly difficult. One additional input to warn you in case you are distracted. Now aren't you and your buddy supposed to check each other remaining air from time to time? Not to mention the DM...
Good point on the distraction cause.
Hi Alec, Like land lubbers with lung disease. Enjoyed Presentation👍
LOVE You Man
Thank you my friend.
Thanks. That was funny and useful. I ran out for the first time in Bali Indonesia yesterday. But I didn’t panic so it was ok. I figured I had enough time to go the last 6 meters. It was no problem this time and I will be sure to never let it happen again It seems the dive rules and style is very very laid back here as compared to most countries. One thing to also bear in mind. Many many thanks for your great video.
You are welcome and well done on thinking through your out of air problem.
A
Hey Alec, If you haven't done a video on lift-bags, please do.
That's an idea, will add it to my ideas list Ted.
A
Hi Alec, People really run out ? Maybe they should stay out of water. Enjoyed Funny Video Guys. Stay Warm🎅🎄👍
Running out of air is natures way of using a bit of chlorine to clean the gene pool
Hey Alec, great video once more. I've got an idea for a topic you haven't covered yet as far as I can tell. Here at Lake Constance in Switzerland, people use dual valve tanks, with their safe second mounted to a separate first stage. Someone suggested to me that when I go on vacation, I could simply take the safe second off its first stage, and put it on the other first stage, the one with my primary. Now as you already taught us, a second stage has to be tuned to the intermediate pressure of it's first stage. So, can you even do that, do it the other way round, tune a first stage to the second stage it is supposed to service?
Can u do a tech tip on dsat vs pz+
Plan your dive and dive your plan, understand your sac, check your gauges every 5 minutes (and your buddies) and don't be a hero. You will get to enjoy another day diving rather than looking at the the brown side of the grass for eternity....
But Sir! Why you didnt talk about:" It will be different in underwater." You can not take that last breath under pressure maybe . That 1 minute air can be 20 second air in different deep. If you go deeper it will be less air etc. Ps : I like video )))
Question for you. Back when I first started diving 12-13 years ago, I got a complete set of gear. After my first trip I replace the gauges with an air integrated computer (Pro Plus 2). Now that computer doesn't register pressure at all, so I've switched to a non-integrated wrist computer (Puck Pro). I haven't used my personal regulator since the old computer stopped working. I plan to start using it again and get it serviced and all, but of course need to add gauges back. Would my old gauges that have been sitting in a plastic bin for over a decade still work fine, or at least would the service technician be able to check? Just want to know if I should plan to go ahead and get a new console before going in for servicing.
And thank you very much for all the great info you provide! I'm also tempted to get flex hoses on my reg after seeing all the times you've talked about them. Possibly a new mouthpiece too. Thank you!
The Pro Plus is a fine computer. You could easily have it checked. I'm not sure what would be a better bet.
Alec
I tried that with a Spare Air 6cf. Had to Empty it completely. The Tank O-Ring Failed. Submersible Systems Warranty Repaired it. 1st time I was planning on Testing it in my College Pool. They didn't send me any more info about What happened.But it was a bit hard to breath with before.
I don't speculate on a problem without the item in front of me but it could the breathing effort may need slight tuning (factory set I believe). If not sure, take it to your LDS, they should have the knowledge and tools to test effort and adjust it to be comfortable. Good you tested it in a pool and not at 60'.
A
@@AlecPeirceScuba_SeaHunter Never took it to the Pool. Lost pressure overnight
Can you give me some information on that 2nd stage?
I know it's a Sherwood Blizzard, but it's at least three generations old. I'm guessing it's from the late 1980s or early '90s. I hope Alec has time to answer with details; I'd love to know more about it.
Is there a difference between balanced regulators and not balanced regulators?
I have the same question. My assumption is once your tank pressure drops below the intermediate pressure of the first stage, you could start to discern a difference in breathing. Guess I'll have to test it out some time.
.....been there and done that Alec in 20 metres( 66ft)of water while wreck diving, when my DV hesitated I checked my contents gauge it was zero, my buddy didn't seem interested when I signaled out of air, so I signaled going up , with the air completely stopped from my DV I felt the little air in my lungs was expanding and remnants of air in the cylinder was enough to get me to the surface...how this incident happened I swapped my 72 cu ft cyl to a 60 cu ft before the dive and forgot to change my bottom dive time......... it was a good experience and wasn't fazed.....
I think it's important to note that a minute of air at the surface is more time than the same tank pressure at depth.
Very true but this was to show the effects of decreased air pressure to those who think it stops 100% in mid breath. Training and monitoring air is so important to divers of any age and experience.
Safe diving Kyle.
Alec
I completely agree. I love your videos. I just didn't want anyone thinking they had 60 seconds after noticing those symptoms.
I see so many divers recommending pony bottles, having a buddy right next to you, etc. If you are low on air, chances are your buddy is about the same. Your last line is the best advice. Don't let it happen. With today's reliable regs, air integrated computers, and SPGs there is no reason to run out of air. Maintain your gear, watch your gauge and don't push your luck by running low in the first place.
@diver dave For them, a little scare may be enough. If it doesn't, there is only one outcome in their future. Drowning.
I cannot confirm this. I was told so by my diving teacher, but today we have to say: It depends on your regulator.
As a diving teacher I wanted to know if this is true, so tried this under Water at about 10m depth with some Posidon X-Streams. There was no difference from the frist breath until the last. They worked perfectly until there was no air left. The only difference was that there was no next breath after the last. I cannot confirm that I would have had several seconds time to react. Maybe half of a breath was harder and then I was out of air. (Of course I had a stage and a buddy with me.)
...my experience too Sascha a complete stop at 20 metres............
At out first holyday after we learned diving (approx 10 dives alone, me and my girl friend) the guide let me breath until the last breath of the tank. "Just to see how it feels."
Water depth at that moment 1m at the beach. Was interesting.
I wanna try that. I bet I can get Tim, our local dive instructor, to let me try it. I wanna try sidemount anyways, perfect opportunity.
I've never heard of anybody running out of air, but running out of gas yes!
Alec we know you are going to point out that in this video you are at the Surface ? When this happens at 105 ' ft
You don't have that much volume...! At 105 or 4 Atomosfear 200 psi is less than 1/4 the volume as at the Surface. So you gain a little on your way up but basically you would not have had many breaths left.
I did run out at 105 one Friday night. Not a good feeling... ! I have told my story before. If my Dive Bud hadn't seen me Bolt for the Surface & caught me at 70 FT I wouldn't be telling my story. I had already Stoped Kicking. Could only focus on pulling gas from my Regulator. And I can tell anyone you can't control your Heart Rate nor your Breathing....! I like the ones who say Don't Panic ?
I have no Problems with Running out of air, but I still hate to get my mask ripped of 😂