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thank you for the upload. great talk/class. hypothetical question: if blood is whats caring gas into the tissues, blood transfusion/dialisis or some of the sorts could help with serious cases of DCS?

Amazing presentation. Now i finally understand the purpose of the 16 tissues in ZH-L16! Thank you very much 😊

The first graph is actually a logarithmic function.

Fantastic walk through, really enjoyed this.

24:41 Critical supersaturation.

always like what you have to say!! Pearls of wisdom in each presentation. Best advice my father & mother ever gave me "always ask why?"

when I took my into to diving NAUI course (Lee Somers 1973) NEVER were we told to dive alone. The buddy diving mantra was pounded into us, as was 1 reg buddy breathing. It wasn't until I looked into tech diving that the "you are your own buddy" concept was introduced to me. I've been diving for a long time and perhaps things/concepts have changed, however, in my opinion adventures are always better when shared with a friend/buddy. AND, when SH_T happens, and it will, it is always good to have some help.

Great coverage mate thanks

Adam is a legend

Thank you very much, really informative.

I don't understand why the M Value blue line is not parallel to the green Ambient Pressure Line. As with the example of a tissue with a 2 bar limit for the M value, there should be a constant difference between the blue and green lines, which implies parallelism. If not, as it is shown, it implies that the M value can increase with depth. Can you explain? Regards.

I am an engineer and a tek beginner. I understand you 💯%. All those over confient Divers trying to explain me failed miserably. Thank you Sir. We feel the passion.

I use a Shearwater GF 40/85

Very educational for me! One question: with ‘standard’ GF’s were are more conservative at depth. Why? Why not use 70/70 for instance? Thank you! Serge

This was hugely educational. Thank you so much for sharing it! This has given me a much greater appreciation for what's going on inside my computers' models.

Good subject and with lots of potential. But certainly the presenter misses some fundamental definitions from a thermodynamics, and physics stand point. Saturation vs. Supersaturation definitions are very, very weird. Where do you come with those definitions from. This is all physical-chemestry dynamics. Nothing exuberant. Very straight forward. You are talking about gas solubility in solutions or tissues at contant temperature (body temperature) and while pressure variation. There are more easy ways to explain this principle. You are all over the place with it. In fact, your visuals are kind of confusing As I said, there is tremendous potential for this subject. Thank you anyway.

Finally someone made it make sense to me. I've read so many articles and watched videos etc... Very good job at painting the big picture!

Helpful video

Great explanation thank you. Seen Mark at the UK shows several times and have the book. Always interesting.

This is so interesting and informative. Thank you!!!

This is a great talk. Thank you Mark and Thank you Dive Spear and Sport. I believe this is the second time I've listened to this webinar, and probably won't be the last time.

Thank you for posting this

Good video thank you

Thank you a lot for the excelent explanation, it helped a lot in understanding the logic behind deep stop.

Really enjoyed this.

I'd like a signed copy

Thank you for posting this video. This video cleared up a few things for me. Safe diving mi amigos.

Great webinar, made decompression look easy.

Also sure that NAUI has always stated that ALL certified NAUI divers are fully qualified to dive solo because they are trained as 100% self-sufficient divers from day one. There’s a reason NAUI does NOT have a “solo diver” course. Because if you’re qualified to dive, you’re qualified to dive solo already.

Wasn’t NAUI the first agency to embrace and teach Nitrox? 🤔

Excellent tutorial Drº Powell, already read your "deco for divers "book and really helped understanding Deco theory. Thank you very much.

Thanks for uploading the webinar session for those that couldn't join live :)

Fantastic talk, thank you.

This is so interesting, thank you for posting!

Was this an actual try dive in a drysuit? As this is what I would love to be able to do a try dive while wearing a drysuit with a qualified instructor in a swimming pool and have pictures of me in drysuit on the side of the pool entering the water under water exiting the water and back on the side of the pool

Dive Spear and Sport I like what I see I have liked and Subscribed wont you please do the same

Dive Spear and Sport Awesome video I am going to check out some of your other videos