Two questions

[JeffG]

The good news is, if we put our efforts together, we'll bring them, kicking and screaming into the 1990's by 2010.

I doubt that. They took a step back a couple of weeks ago. Made a new trimix instructor that can't do valve shutdowns.

 

[Scuba_Steve]

I doubt that. They took a step back a couple of weeks ago. Made a new trimix instructor that can't do valve shutdowns.

Doh..

Can we strike this one up as a plus for maintaining uniformity at least? :shakehead

 

[JeffG]

Can we strike this one up as a plus for obtaining uniformity at least? :shakehead

LOL

I just can't wait to see his students.

Mind you, he just bought a Meg, so its probably 50/50 he will tox in a pool this winter. Could save a lot of students.

 

[amascuba]

That's all fine and dandy, but could you do it effectively on a heaving boat, when the dive site just got changed, with no paper, pens and a calculator.

Basically what I am asking here is, how real-world effective is it to you?

We watch this same thing play out quite hilariously on boats all the time.....

Damn, the 160ft dive just got changed to another site at 140ft.......the mad dash for the palm pilots begins..........roflmao.

Real world application would be limited. I would definitely have a max depth/bt/deco schedule written out. From that I would easily be able to determine my gas needs, but I would also want the plan to be flexible enough to with stand changes in the plan on the fly. I'm not to the point where I can reliably use ratio deco as Jeff pointed out. The main reason for that is because ratio deco assumes that you are going to be using standard gases and I'm not certified for any type of helium yet. I do however have my tables in my wetnotes and would be able to quickly determine a deco schedule from that if something changed as far as depth,time, etc.

 

[amascuba]

Yep, gotta squirt some of that EAN80 deco gas into the 25.645/32.45 to bring the back gas up to 'best mix' standards..if'n ya get me driftage.. lol

OK, gotta stop making fun of my agency now :no

I thought the whole best mix talk in my book to be pretty bogus. I would much rather just use standard gases.

 

[Scuba_Steve]

Real world application would be limited. I would definitely have a max depth/bt/deco schedule written out. From that I would easily be able to determine my gas needs, but I would also want the plan to be flexible enough to with stand changes in the plan on the fly. I'm not to the point where I can reliably use ratio deco as Jeff pointed out. The main reason for that is because ratio deco assumes that you are going to be using standard gases and I'm not certified for any type of helium yet. I do however have my tables in my wetnotes and would be able to quickly determine a deco schedule from that if something changed as far as depth,time, etc.

Ratio Deco can be run without helium, it just needs a, uhm, 'TDI tweak' is how I'll term it publically. If you're talking to me in person I may however use a more pointed term or two :14:

I won't even bother discussing the forced use of air beyond a reasonably safe depth when there's obvisouly a better gas to use, without question.
There simply is no excuse in this day and age to teach deep air/deco diving when it's quite clear the majority of the world has ready access and would be more than happy to use teh proper gas for the job if an agency would only let them.......and I don't call spending another $1000.00 on 'more' training an acceptable excuse either....just so you know.

But then again, I said I wouldn't discuss it now, didn't I

 

[Scuba_Steve]

I thought the whole best mix talk in my book to be pretty bogus. I would much rather just use standard gases.

This is one good thing I can say about it. At least it's optional and an Instructor can show you why standard gases have far more pluses than negatives, maybe he'd even show you Ratio Deco too

Oh, and don't forget demonstrate a valve drill too.

 

[amascuba]

Ratio Deco can be run without helium, it just needs a, uhm, 'TDI tweak' is how I'll term it publically. If you're talking to me in person I may however use a more pointed term or two :14:

I won't even bother discussing the forced use of air beyond a reasonably safe depth when there's obvisouly a better gas to use, without question.
There simply is no excuse in this day and age to teach deep air/deco diving when it's quite clear the majority of the world has ready access and would be more than happy to use teh proper gas for the job if an agency would only let them.......and I don't call spending another $1000.00 on 'more' training an acceptable excuse either....just so you know.

But then again, I said I wouldn't discuss it now, didn't I

I'd be more interested in the TDI tweak. I know exactly what you mean about deep air. I would have prefered to avoid it all together, but I guess to do that the only other option would be GUE tech 1, which is not a bad option and maybe a class I take at some point. It seems as most of the other agencies still teach deep air. IANTD seems to be getting away from it and NAUI still teaches it to a degree. TDI on the otherhand takes the cake with extended range. Thankfully my instructor wants me to just get some experience under my belt and then go straight to entry trimix. I'm not sure if I'll take that class with him or not. We'll see though.

 

[amascuba]

This is one good thing I can say about it. At least it's optional and an Instructor can show you why standard gases have far more pluses than negatives, maybe he'd even show you Ratio Deco too

Oh, and don't forget demonstrate a valve drill too.

I do valve drills on almost every dive. It's hard to get to my isolator, but I can atleast turn it off and back on.

 

[Scuba_Steve]

Mind you, he just bought a Meg, so its probably 50/50 he will tox in a pool this winter. Could save a lot of students.

Oh you're so bad