Handling Narcosis

[texdiveguy]

I claim to feel no real narcosis until about 160 feet. I often go to around 200.

Also, I pretty much agreed with everything DA Aquamaster said on the subject, except that my comfort level is around 200 (for air) rather than 150.

If you are conducting deep dives in the 150-200ft. range....why don't you use trimix and be safer than doing those profiles on air?

 

[dkatchalov]

Please don't feed the trolls. This joker has been asking this question for years http://www.scubaboard.com/forums/basic-scuba-discussions/60261-deep-deep-diver.html

That thread is fascinating. People's stupidity has no limits.

 

[Rickg]

dkatchalov,

At one point there used to be a PDF version of the USN's official report (100+ pages) on the salvage of the Squalus from beginning to end that I found to be an amazing story. Unfortunately neither I nor Google can locate that report. Maybe someone else on this board will know where to find it.

 

[dkatchalov]

So the OP's post now makes more sense. I take it that 4 years after asking how to do a 200ft dive with 7 dives under his belt he is still training and practising for it.

 

[MattL]

Yep it was the Coolidge, what a great dive aye. It was just me and a dive guide. I had single 80 with a 30pony. He had doubles and a pony. Honestly i know what your saying but i only did it as i had worked my way down to that depth and yes it was on air.

Haha, you must feel better for trying to burn an amateur like me for doing something silly but if you were diving that wreck with us you might see different. I love to dive and except thats its dangerous.

Oh and its 75 dives now and about half of them are solo.

man you not going to live long doing this what was your deco what gas did you use what if your buddy tanks failed and you had to bail him out would have you pick your self or him becouse with 110 cuft you dont have the gas to save both of you so, I DO NOT THINK YOU DID IT SAFE. Sorry to pick on you but I'v been on that bout no one wants to be on. Take the class get the training have fun get moer dive under your belt.

on a side note is some of are narcosis come from o2

 

[dumpsterDiver]

If you are conducting deep dives in the 150-200ft. range....why don't you use trimix and be safer than doing those profiles on air?

Cost, convenience and lack of any formal training for that kind of diving. You would see how hard I have to argue with my buddy to keep air dives (usually) less than 200 ft.

I never said it was smart, but the OP questions pertained to how people function and deal with narcosis on air.

 

[Blind]

man you not going to live long doing this what was your deco what gas did you use what if your buddy tanks failed and you had to bail him out would have you pick your self or him becouse with 110 cuft you dont have the gas to save both of you so, I DO NOT THINK YOU DID IT SAFE. Sorry to pick on you but I'v been on that bout no one wants to be on. Take the class get the training have fun get moer dive under your belt.

on a side note is some of are narcosis come from o2

Na its all good, i know what i did was silly to the point of dangerous if something small had went wrong, but in the tropics its just so much more tempting to go deep when working your way down a wreck dive by dive(in my home country ive never been deeper than 28m as its too dark,too cold and there is nothing really down that deep). In the 2 weeks i was around the Coolidge about 20 people must have done the same dive with no trouble.

The deco profile was something like 3mins@12m, 6m@9m, 15mins@6m, and then 30mins@3m. Oh and we had another 2 ponys each stored at the deepest deco stop just incase we came back low on air.

 

[vshearer]

Yeah, I was kinda wondering how a single 80 got him his claimed 15 plus minutes between 165-195' then using his 30 for deco obligation (of which he does not mention and it would be what? about 26-30 min?)) seems he would be sucking water..

Wait, I was looking at this:

After 15 dives on the same wreck in Vanuatu i had worked my way down thru all the ship except to the stern. When i dived the stern(non-penetration) i got down to a max of 64m and was fine to start with(~220ish feet i think) tho after a few mins i felt like i was on strong drugs(strong extacy mixed with NOS for anyone in the know), i can say it was truly spiny as. It was kind of a mental struggle in your brain to keep it focused on what your original plan was rather than swimming off after some brightly colored fish who just talked to you. That and i was getting interesting sound effects that are hard to explain.

After a couple of mins down around the 60m mark we raised to 55m to use up the other 10 mins bottom time(haha we were doing laps of the swimming pool so we were probably still a bit narked) tho i felt so much more sober than down that bit deeper. I was diving in a 3mm shorty in 26oC water with 50m vis and no current.

So how did that work with a single 80 and 30? Not doubting you, just curious.

EDIT: Nevermind, punched it in wrong. Still seems to be cutting it a bit close. :O

 

[texdiveguy]

Cost, convenience and lack of any formal training for that kind of diving. You would see how hard I have to argue with my buddy to keep air dives (usually) less than 200 ft.

I never said it was smart, but the OP questions pertained to how people function and deal with narcosis on air.

Not to sound harsh....but I would think a new buddy might be in-line....and if you still continue those deep dives the investment in $/time/training might help insure you better odds in returning for another day of diving.

 

[SeaHound]

Please don't feed the trolls. This joker has been asking this question for years http://www.scubaboard.com/forums/basic-scuba-discussions/60261-deep-deep-diver.html

I am glad you remember that post. I hope you also remember the secret training offer you made to me four years ago. You wanted to give me a tech diving course at 200 ft dives when I had only 7 dives. You thought other instructors and tech-divers would rip you apart on the boards so you sent me this course offer in private. This is the exact PM you sent me (I still have the message saved after 4 yrs):-

"I am not going to post this publicly but I don't think going to 200ft is that difficult. These guys are making it sound like a moon landing. If you are comfortable in the water I could get you safely down there and back with about 2 weeks training.
I think there are some who don't want people to know just how easy it is.

cheers,
Dave..."

If I had taken this "secret tech-instruction offer" of yours then yes I may have known the answer to my own question on handling narcossis. Since I did not / could not, my question about how deep divers handle narcossis is justified.