Mastering Safe and Controlled Ascents | Master Series
Вставка
- Опубліковано 28 вер 2024
- The ascent is the most critical phase of any dive, pivotal in preventing decompression sickness. In recreational diving, crucial aspects of the ascent are often overlooked, with the so-called "safety stop" misleadingly treated as a mere formality. This video provides an in-depth analysis of the proper ascent technique, emphasizing that every dive is a deco dive and every stop is vital.
We delve into the nuances of team coordination, role assignment, and the correct handling methods of a DSMB, demonstrating a meticulously structured ascent from 10 meters. The importance of maintaining horizontal trim, executing planned stops with precision, and effective communication is highlighted to ensure a cautious and efficient ascent.
This comprehensive guide aims to elevate your understanding and execution of safe and controlled ascent procedures, significantly reducing the risk of decompression sickness or other complications.
🔥 SUBSCRIBE to the channel 🔥
Please consider SUBSCRIBING to our growing channel and become a part of a community of self-conscious divers keen to improve their skills while exploring the deep blue.
📸 Follow us on INSTAGRAM
/ flowstatedivers
📱 Stay up to date on FACEBOOK
/ flowstatedivers
00:06 The Significance of Ascending
00:53 The Art Of Coordinated Ascent
06:00 The Correct Body Position
06:42 How To Handle The DSMB
07:11 Looking Up?
-----------------------------
**Disclaimer: The content provided on this scuba diving channel, including but not limited to videos, articles, tutorials, and comments, is intended for general informational and entertainment purposes only. The creators, hosts, and contributors of this channel make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability of the information contained herein. Scuba diving is an inherently risky activity that can result in serious injury or death. Viewers and participants must understand the risks involved and are responsible for their own safety and well-being. It is the sole responsibility of the viewer or participant to ensure that they have the appropriate skills, experience, equipment, and health condition required to safely engage in scuba diving activities. Always perform a thorough risk assessment and ensure compliance with local laws and regulations. By accessing and using this channel, you acknowledge and agree to this disclaimer and accept full responsibility for your actions. If you do not agree with these terms, please refrain from using this channel.
FlowState Divers strongly urges people to seek dive instruction through an internationally recognized training agency and to dive safely and within the limits of their certification level at all times. Our channel is aimed at already-certified divers looking to further their skills.
The creators of this content will not assume any liability for direct or indirect losses or damages that may result from the use of information contained in this video including but not limited to economic loss, injury, illness or death.**
----------------------------------
Not How To Make Your Lungs Explode When Scuba Diving, also not Dive Emergency - Uncontrolled Ascent, also not How to perform a scuba safety stop like a Pro!, also not The Controlled Emergency Swimming Ascent (CESA), also not Making Safe Ascents, also not DSMB Basics: How To Choose, Setup, Deploy & Ascend | Scuba Diving, also not Safety Stop Procedures, also not Uncontrolled ascent!, also not Making Safe Ascents on Scuba, also not How to Avoid Decompression Sickness, also not PADI Scuba Diving Skills: Ascending, also not DIVING LIKE A BOSS - Descent & Ascent, also not Descent and Ascent Training - Backmount Online Course, also not Diving tutorial UCPA #7 - How to control your ascent, also not Emergency Buoyant Ascent, also not Important scuba diving ascending safety skill explained: The CESA!, also not Controlled Ascent | Recreational Skills, also not How to ascent with a SMB in a drysuit, also not 5 Point Ascent Scuba New Revised PADI IDC Skills Circuit • Divemaster Skills, also not HOW TO perform a 5 POINT ASCENT | PADI SCUBA SKILLS
These videos are invaluable. I wonder if subtitles could be added reminding the viewers of the meaning behind the hand signals, not just in this video, but in subsequent videos. I think this reinforcement would add to the instructive efficiency.
good point, we will make sure we add these in the future.
@@flowstatediverscould be as simple as adding subtitles or labels positioned next to hands showing hand signals. Excellent idea IMHO
subtitles can be added to any video by clicking the closed caption button in youtube.
Gotta give credit to the videographer too! Great work guys!
You make really brilliant videos. We use all the hand signals in exactly the same way because they also work with thick drygloves. As a three-star CMAS diver, you often hear that our training is outdated and far too strict. In my opinion, alternate breathing is also important. Not because it is very likely to happen, but because it clearly shows you how and whether you know your equipment and have it under control. That's why it's so exciting to see that there are also divers "overseas" who teach exactly the same thing (from what I've seen in the videos so far).
Really great videos 👍 thank you
Thanks. CMAS undoubtedly has some really good old-school style elements in their general curriculum (and some less great ones), but hey, incorporating the best from different things will result in something good in the end. Thanks for the kind words.
Ребята Вы молодцы, отличные видео, все очень точно и красиво реализовано. Спасибо, продолжайте, буду совершенствовать свою технику с вашей помощью!
I love these videos... I'm just getting my OW cert, but the instructors and divemasters are blown away, and I'm getting a barrage of questions if I'm already certified somewhere else, or I dove before? Just becouse I do all the drills relatively slowly (as you can see here), step by step, no rush, and I'm not panicing either... Also After countless of videos like this, I have great trim and bouyancy control...
So to all the nay sayers, you can actually learn an incredible amount from just watching these :D
As always, super informative content, great demonstration!
Thanks!👌
Thanks, glad you enjoyed it
Until such time as it’s feasible for me to travel to take courses with you, I would pay money just to ask a lot of questions to clarify my understanding of various things. Your ability to provide clear, concise and accurate information is the best I’ve found on YT. There’s so much conflicting info out there when it comes to what to do, and particularly WHY. As always, thank you for another excellent video ❤
Thanks Phil. We will soon be launching an innovative new platform that you can join to and get proper coaching so keep an eye on the upcoming announcements, you gonna love it :) we are working extremely hard to finalise this project.
@@flowstatedivers that’s outstanding! Thank you for letting me know!
your the best guys .Great work 👌👌👏
Great video again! Guess I'll just have to plan more dives now to practice... 😂
Great video as always
Thanks Ian, glad you liked it
@@flowstatedivers all you videos are top class
Wow, if horizontal can you really empty the BCD so it doesn't balloon before assending?
@EngineerSailingcc absolutely you can. If you dive correctly weighted, you will have no gas left in your bc by the end of your dive otherwise you can just dump while maintaining ideal trim.
"DSMB" should be used on every dive? We dive from the shore through the surf, not from boats. DSMB does not work in high surge areas when swells are up; the net transport is in direction of swell, towards the surf. We ascend along the bottom, find the correct safety stop depth and hold there on the bottom. Just a different means of achieving the same results.
@phillipbuttolph9830 why not deploying your dsmb ? It sounds like a perfect opportunity for practising it once every dive. This was the point of our suggestion, practice deployment each and every dive even if you don't have to otherwise you will have a hard time using one when actually needing it.
Is the diver only using his lungs to accend? I see he doesn't touch his wing inflator in the video.
@johnmaxwell1434 Correct... this is how you should be diving, correctly weighted. Have a look at our correct weighting as this is all explained there in details.
Pero quiénes sois, y qué pedazo de videos.
i have been growing with your channel, i got ow certified in may 2023, and watched all your videos before gue fundamentals. now i'm ow, aow, deep, drysuit, gue fundamentals, razor sidemount and cavern/intro to cave. thank you and would hope to dive with you guys one day in tenerife.
Great to hear! Make sure you slow down, as the list of things you've accomplished in such a short period sounds excessive. Focus on quality because certifications only prove that you participated in a course once, nothing more. Make sure you dig deep and become a solid diver with all the fundamentals of diving. Seek out the best instructors and enjoy the new things you have learned.
@@flowstatedivers Yes, I intend to slow down now. Even though I have good trim/buoyancy and can do all the required drills and skills, I don't plan to take another course until I rack up another 100 dives (not to mention countless pool training sessions) and can switch seamlessly between twinset and sidemount. I seek out the best instructors in the regions where I travel, except for my OW, when I didn’t know what I was doing.
I was never interested in marine life, so I wanted to dive in caves to justify my diving. I finally managed to see the caves in Tulum after my certification in March. So, no more course chasing for me.
On a side note, are you using the UTD Z manifold for sidemount diving? If yes, why do you choose that over a conventional sidemount rig?
Perfect for a monday lunch break at work! Can't wait 🤩
Have fun!
Brilliant video as always! I can only repeat myself every time you post a new video 😆 informative, absolutely no bs, beautiful shots, exceptional quality. I just simply love your videos! Thank you for your hard work, sharing your knowledge with all of us!
I love these videos. as a new diver with only 40 dives I find this infomation and tips super valuble. Thank you so much. P.S your video on releasing a DSMB actually allowed me to perform a correct deployment for once without issue 2 days ago :P I was so happy.
Awesome, thank you!
These videos are absolutely amazing. They're clear and concise, but still offer rationale and invaluable "pearls of wisdom." Moreover, they show that the goal is being perfect in best practices.
I investigated your website, and saw that you offer both PADI and UTD courses--that's a good example about why PADI's new five star dive center initiative (in which instructor are not allowed to offer non-PADI courses) is so misguided and potentially harmful. If the videos are any indication, you guys operate at such a higher level in terms of your training standards that it really does students a disservice by not letting you guys be "the best PADI has to offer" because you give students an alternative that is so much better.
Thank you very much for the kind words. We have always maintained that training organizations are secondary to instructors. We deliver training that far exceeds any standard requirements and are able to sign our students off under different organizations, not that it matters. Everyone at FlowState comes from a cave & technical diving background, and we are here to deliver exceptional service. Who knows... soon you might be able to sign up for an actual FlowState Divers course ;)
This is such high quality content. 🙏🏽
Best Diving Videos ever!
How did the dSMB handler ascend from 10m to 3m without releasing any gas from his suit or BC?
@zhengmaoli1835 This is how it looks like diving correctly weighted. By the end of the dive, you have used up some or most of your gas, and there is way less weight to counteract or offet with your BC, which means you dont have gas to vent... same applies to your drysuit so you are able to manage a controlled ascent by breathing only. Several of our other videos explain the concept behind this, such as the one about correct weighting, the one talking about the details of shallow breathing, etc..
@@flowstatedivers oh yes, I completely forgot this is at the end of a dive with near residual gas. I sometimes practice with my buddy only for ascent - so we descend to a given depth like 9m, ascend back to surface and we repeat this for many times until we run out of gas. In this situation we might have to ascend with a very full cylinder (this also demonstrates the condition where you have to terminate a dive half-way due to emergency) - in such case do you have any good tips of managing buoyancy?
Alright, I have a question related to DSMB … in my early days of recreational scuba diving, my instructor trained us deploying DSMB - of course not the oral inflation type; we were at the depth of 5m doing the safety stop (haha :D) and I deployed one. When we surfaced, my instructor commented that my DSMB was not fully inflated, I should add more air next time. Question: how much air is needed for a “successful” deploy? Thanks.
Thanks for your question; it really is a good one. This all depends on the surface conditions, the width of the DSMB, and the depth from which you are deploying it. Obviously, the deeper you deploy yours, the less gas you need to add, as it will expand on ascent. It's a common misconception that you have to have your DSMB fully inflated. One of the reasons why divers are so hung up on this is because most believe that a DSMB will only stand up straight on the surface when it has 'enough gas' in it. In reality, any SMB will stand up straight if ample pressure is applied from below, so it really comes down to surface conditions in the end. In the video, we were diving from the shore in approximately 20 cm waves, which means having our DSMB sticking up about 30-40 cm was perfectly fine. What divers usually forget is that you can fully inflate an SMB if needed after reaching the surface and it takes anywhere from 3-10 seconds.
@@flowstatedivers wow ~~ you blown my mind with your answer and explanation, I really learned from you. Thank you very much!
Damn, your buoyancy is dive ASMR.. beautiful technique.
Do you have a link to the research paper which demonstrates off gassing changes according to orientation. The pressure differential of the average diver at 175cm ina vertical position is 8% of 1 atmosphere or 1.6 inches of air pressure. The largest physiological factors which affect off gassing are respiratory physiology, body fat composition, cardiac output and hydration status.
Gases evolve from tissues according to Henry's Law according to the pressure of the gas over the solution. So having an 8% pressure differential between your eyes and your toes is really 4/5 of diddly squat.
External factors are far more important to teach a student- rate of pressure change ( rate of ascent), gas mix ratios ( why do we not teach Nitrox in entry level courses) and total time at depth (gas absorption) .
Otherwise a good video.
New diver loving the Chanel, really helping 👍
Thanks and we are glad to hear that new' divers are also interested :)
BRING IT ON!!!!
Just amazing videos from you guys!!
Thank you, appreciate it!
"every dive is a decompression dive" - so true...
Great video, but I didn't notice the divers adjusting their bcd / wing while ascending. Was that just not included in the footage? I figured if you didn't release gas from your bcd as you ascend, you'd start an uncontrolled ascent.
It's discussed in the comments below. The reason the diver's not adjusting their bc is because we dive correctly weighted and therefore, we finish the dive with 0 gas in our wing / drysuit, which means there's no gas to release. Check our video on correct weighting and breathing techniques to understand the concept.
This is awesomeness, guys.. chapeau! 👌
I often hear from DIR divers this assertion that vertical ascent leads to improper decompression because of the pressure gradient exerted onto the body. As a scientist, I really like to be convinced with facts. Would you mind pointing me to any scientific study or even DAN article that substantiate this claim that decompression is improved using horizontal trim and decrease DCS risk? I would really appreciate it. Thanks in advance.
Thank you for your thoughtful question! It's understandable that, as a scientist, you would look for hard evidence. However, it's important to recognize that research surrounding decompression sickness (DCS) is still somewhat in the realm of pseudo-science, as the exact mechanisms behind bubble formation and nitrogen off-gassing aren't fully understood. There are many factors that contribute to DCS risk, and definitive scientific studies proving one method over another are hard to come by.
That being said, the idea behind horizontal ascent being safer stems from the known pressure dynamics in shallow water. Near the surface, the pressure gradient is much steeper, meaning that even a small change in depth during a vertical ascent can cause rapid pressure changes from your feet to your head. This increases the risk of nitrogen bubbles forming in the bloodstream. In contrast, a horizontal ascent keeps the diver at a more consistent depth, reducing these abrupt pressure changes and allowing for more controlled off-gassing.
Additionally, vertical ascents often involve more exertion - kicking upwards, for example - which increases blood flow and nitrogen distribution. More physical exertion during ascent can increase the likelihood of bubble formation, which is why horizontal profiles that minimize movement are encouraged in decompression protocols.
While there may not be a single scientific article or study definitively stating that horizontal ascents reduce DCS risk, organizations like DAN and technical diving communities often recommend horizontal trim and controlled ascents based on practical experience and the principles of pressure change in shallow water. Given the incomplete understanding of DCS and the many variables at play, it’s not always about finding a single paper, but about applying the best available knowledge to minimize risk.
Very nice video. Thanks.
Regarding you comment about being vertical during ascent. I read that research showed decompression is still quite effective. That said, horizontal is definitely the preferred orientation. It slows down your ascent too.
We exaggerate some statements on purpose in hopes of having a larger impact on divers (those divers that are in complete denial), encouraging them to do the right thing rather than neglecting the facts we share. Of course, you will off-gas in any position as you ascend, but it is less efficient than being horizontal, and these two techniques cannot be compared.
Awesome once again! Really interesting to see that this can be executed with such precision and control. I'm sure that everyone will take away something from this video.. once again!
Glad you enjoyed it!
I always did my ascents from the safety stop to the surface vertically, I tried your method during my dive last Friday.
I must say it felt very good and a more professional way to do it 💪.
Great to hear you had success with it !
Please are you using Apeks xtx 50 as your main regulator?. If yes, briefly, can I go for it?. Thank you a lot.
@@prontossimo yeah we use xtx50s with DST first stage + fifth port configuration. Great configuration
@@flowstatedivers thank you a lot ❤️
Awesome Content!🎉
Thanks !
Thank you very much for the knowledge it will be put to good use, once again Thank you for all you have done
Thanks for tuning in, glad you like them and I'm sure it will improve your diving if you put the required work in :)
I think a quick video on DSMB selection is probably required. A lot of peope use open bottom ones and they are filling them with their second stages. They're risking getting a very full DSMB caught in all the silly straps these come with and in their line.
I rarely dive anywhere with so little current that holding a circular formation is possible. The best that can be done is a stretched out horse shoe because good luck backfinning into the current for minutes at a time.
Our very first video covers just that, explaining the difference between DSMBs. Also, we are seriously puzzled by comments about diving in currents. First of all, ascending in a current makes no difference whatsoever, as holding position relative to your team is no different than in calm water, since everyone would be drifting the same way. If you are referring to a surge, it's trickier but absolutely doable.
@@flowstatedivers sometimes an exit point is fixed, so unless you want to surface swim after drifting off the mark... Sure, you could take a guess at how far you may drift during ascent but in my experience nature often as other plans.
@harambeexpress you either properly drift diving and are being picked up by the boat upon surfacing, or you simply shoukd not dive in current unless you have a DPV. It's that simple in our book
@@flowstatedivers I understand what you're saying, but as an example I don't think a shore dives which can be done as a drift dives are unreasonable. You just have to adapt and avoid certain scenarios. Getting a large deco obligation on one or these dives is certainly not on the cards because the environment is too unstable.
However for dives within recreational limits It just means you do things like gradually shallowing up towards the end of the dive inorder to minimise your final stop time dealing with current. You can also get quite a nice profile doing this. It might also mean that you operate in pairs for the final ascent rather than a full team, because in pairs you can be next to each other and still have good communication and proximity for dealing with issues. Flexibility is an important skill to have.
@@flowstatediversI think they’re referring to an ascent along an anchor line or buoy in a slight current. Pretty common situation in my experience.
This goes to show how crappy training is with certain agencies is. I have 160+ in over a year and I constantly learn more from this channel than from the instructors I’ve had 🫢 Back to when I did my AOW I wasn’t even thought to use a dsmb. I had to go online and watch a bunch of tutorials but it’s messed up that they’d allow someone who doesn’t know how to do something so important pass an “advanced” certification 💀 Thank you for sharing your knowledge 👏🏽
That sums up the reality of today's dive industry pretty well. Divers like you will make a difference, so keep an open mind and put in the time to learn and spread the word. Thanks for being part of the movement!