Buoyancy Control: Fix 2 Common Mistakes (Quickly)

Do you want to improve your buoyancy skills?
In this video, Eva and me demonstrate 2 common buoyancy mistakes and how to fix them. You
will first learn to keep your buoyancy under control when you descend. Then, you will see
how to sort out emergencies in case you lose control of your buoyancy on your way up. Especially
at the safety stop. If we never met before, my name is Patrick, I’m a diving instructor
and co-founder of Air Consumption Scuba. My goal is to help you refresh and upgrade your
diving skills. On this channel, I give you tips and tricks to improve your air consumption,
get ready for your next diving holiday, and take your diving skills to the next level.
I want you feel comfortable for the first minute you hit the water again. If you are
new here, consider subscribing. By the way, as my channel subscriber, you can get 40%
off my course right now. Claim your coupon in the comments below. This offer won’t last
for ever. Now, let’s dive in the topic, what are the 2 most commun buoyancy mistakes divers
do underwater. Let’s start with your wetsuit. Most wetsuits are made of neoprene. Neoprene
is a flexible material that contains tiny bubbles. The deeper you go the less buoyant
your wetsuit is because these bubbles get squashed. So if you were neutrally buoyant
at the surface in your wetsuit, you will most likely be negatively buoyant when you reach
the deepest level of your dive. If you don’t put air in your BCD, you will continuously
hit the bottom, maybe even hurt yourself and the aquatic life, or struggle to maintain
your depth if there is no bottom. If you don’t pay attention it’s easy to fall far deeper
than you should. Then you have to kick up. Your breathing rate starts to speed up because
of the physical effort, stress and maybe even anxiety. This will empty your tank faster.
As you are at the deepest level of your dive profile, you can easily waste ⅓ of your
air supply in a couple of minutes… How can you avoid this? Simple … and easy too…
Press on the magic button gradually while you descend to maintain neutral buoyancy.
Towards the end of the dive, when you start changing depth and slowly make your way shallower,
divers with less experience often forget to vent air out of their BCD. When you descended
to the deepest depth at the beginning of your dive, you added some air to your BCD because
your wetsuit lost buoyancy, right? If you put air in your BCD at 30 m, remember this
air will expand on the way up. Back at 10 m the air in your BCD will have doubled. This
is when you sometimes see divers rising slowly up towards the surface like hot-air balloons,
or like magnets slowly attracted to the surface. They just lost control of their buoyancy.
When this happens, they usually try one of two things: They either press the deflate
button on the inflator but surprise surprise … No air comes out. In this situation, the
air is trapped at waist level in the BCD. Air always heads upwards, vertically towards the
surface. Or they start to kick and swim downwards with their hands, head first. Neither of these
2 options will fix the problem. If you forget to vent your BCD gradually on your way up
and you lose control of your buoyancy, don’t waste time:
Either move your body so it’s nice and vertical. Slightly leaning backward is even better.
Grab your inflator, extend it and hold it slightly backward as well. Press the deflate
button and empty your lungs all the way but don’t hold your breath.
Or do this: stay head down and kick downwards. Use the release valve on the right hand side
at the back of your BCD. This is why you should always get familiar with the equipment you
use and why you check it works well… Adjust the air in your BCD each time you change depth.
Remember, your lungs are your best Buoyancy Control Device. Use your BCD when your lungs
can’t do the job. Find the right balance. Use your BCD moderately. In this video, Eva
and me showed how to sort the 2 most commun buoyancy mistakes. Yon now have tools you
can use right away to handle buoyancy-related emergencies. Did you learn some new cool stuff
in this video? Then, make sure you subscribe to my YouTube channel right now. Just click
on the subscribe button below the video. And don’t forget to check out the course on airconsumptionscuba.com.
See you soon!

35 thoughts on “Buoyancy Control: Fix 2 Common Mistakes (Quickly)”


  2. I subscribed to the channel. I have been diving for a long time, but I never stop learning! Great channel, and great video!

  3. I still find buoyancy a challenge, my last dive I descended too fast. I've been playing around with weighting, and My buoyancy check at the surface let me know that may have been over weighted. Thank you for the video, the leaning getting vertical and leaning slightly back is a good tip. I try to take advantage of my dump valves as well, but I have a little bit of trouble reaching the one in the back. So I need to get in the water more and keep practicing.

  4. I’m sure this video will help all beginner divers, less-experienced divers or any other diver getting back in the water after a longer break. Loss of buoyancy control under the water can quickly turn into a safety issue, not only for the diver himself but also for the other ones diving with him … I wish all divers I guided or taught could have had access to this video … Great idea Patrick! Thanks! 🙂

  5. This video was exactly what I needed before going back into the water after a long break from diving. Thank you!

  6. I wish I had watched your video before I went for my review dive earlier last month (after a gap of 3 years). I shot up when we were supposed to do safety stop exactly as this video described (forgetting to vent the air in BCD). Luckily one of the DM caught me and brought me back to safety stop lvl. However, the instructor did not tell me why or how to prevent it from happening again. All he said was "remember to control your breathing and if this happens again, I won't come reaching for you." It was me who suspected that it happened because air expended in my BCD and I can't believe that when I voiced it out to him, he did not give a confirmed yes. I tried to vent it anyways during my last dive and I was FINE. Now I confirm my suspicion by watching your video! I wish all instructors could be proper teacher like you and students won't have to go through what I went through. Many thanks for making this video and all the vids in your channel!

  7. Thanks a lot very good and nice video i still have one question

    After each dive while ending it at the surface blood came out of my nose..?

  8. just what i needed! thanks! Your accent reminds me of the scuba diving instructor in the movie "along came pollie" lol

  9. Thank you Patrick for your useful videos, they really clarify many things to me, please keep doing more videos 🙂

  10. At the beginning of one of my last dives (2 years ago) I lost buoyancy control and felt myself rising. I shite myself and all I could remember was to not hold my breath!! I had tried to vent but it didn't work because I was upside down, as I see now in this video. I forgot about the other BCD vent as well. I was unharmed but it was scarey at the time. The dive leader (poor guy) had a panic attack and that was the end of that dive. Totally My fault and I want to make sure to learn from the mistake and never do it again.

    Thank you for this video, very informative. Trés bien

  11. After 2 dives with this BCD〉〉〉 nub.best/01m0 (and it may be because im new to diving) the only problem i really have with this is the side air bladders. When im at depth they tend to slide up the sides of the strap trapping air into it and not releasing it making it mess with my buoyancy. I'm having to pull them down to my waist and squeezing them to remove the air when trying to descend. I haven't had any other problems with it yet. im going to buy a Velcro strap to help keep them by my side.

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