A drysuit provides a redundant buoyancy system, possibly the primary goal here rather than thermal protection.

Diving overweighted is necessary sometimes, as if you are balanced at the end of the dive, then you may very well be heavily overweighted simply from the weight of the gas in your bottles at the beginning of the dive. This is why some agencies have the preference that drysuits are to be used whenever steel tanks are used.

a good way is to be neutrally buoyant at the last deco stop with almost no remaining gas on tanks. That way, the maximum and only overweight during the dive would be the gas in the bottles, and that should be as well the dumpable weight to carry. Then, if you have a buoyancy device failure you can get rid of some or all of this weight to be neutral o nearly neutral again (this negative buoyancy can even be compensated with breathing or slight finning sometines, when using single tanks). This does not apply for neoprene suits thicker than 3mm, that make the diver buoyant in shallow water but that buoyancy dissappears as going deeper. This is the reason many agencies advice not to use thick neoprene suits and also not using a drysuit as a redundant buoyancy system. That said, that would be indeed a reason to use a trilaminate drysuit instead of neoprene, but again, i am not sure if wearing just a t-shirt underneath is warmer than a 3mm neoprene.

@@DogDamour that's what I was getting at, if your neutral at the end of the dive with lets say 35bar in all your bottles, your gas weight will be your only overweight. As far as ditchable weight my personal view is that anything more than you can swim up should be ditchable, including stage bottles etc. Finally exposure protection is always pretty personal, I just finished up a dive today at peacock springs in cave country and I'll use thick undergarments on top of diving a ccr with warm wet gas in the loop because I freeze otherwise.

jv back bv

Seliece Duckwitz Demons by Imagine dragons, Read the description.

You can do a 70m dive and have close to zero deco if you don't stay down for too long...

A friend of mine once broke his 340 ft record to 344 ft on a single tank. He was airlifted to the nearest chamber though. True story.

Thats definitely not the way to go about doing a deep dive. Any dive that ends up in a pressure chamber is doing it wrong.

Adrian Bawn yeah, he got too emotional i think. Maybe thats his way to commit suicide. He also once speared a huge tuna who dragged him to 250ft and busted his eardrum.

Dove shallow tunnel of Eagles Nest sink, 230', on air once, 25 min bottom time, 2.5 hours to surface. 1st deco at 130'!!!

Sarah Alsaigh moby-flower

Malik Adawin Do you know the song at the end of the vid, begins at 15:54? Thnx!

Seliece Duckwitz Demons by Imagine Dragons

Baby shark ain’t it?

MrNotebookguy rich Saudi spoiled princes with western oil dollars to burn.

They look ridiculous, and reckless

Shit 5 years ago...

I’m forever getting lost. I find if I retrace my steps I find my way back.

Pointless dive

What about the crazy Russians? 😳