Trimix Max Depth

[Scott L]

I smell another deep air thread brewing...:shocked2:

 

[ianr33]

Is there different types of trimix?

Yes.

Expensive trimix and really really expensive trimix

TDI at least has 2 training levels.
1)Trimix. Max depth 200 ft. Minimum O2 18% (Close enough to normoxic)
2)Advanced Trimix. Max depth 330. this will use hypoxic mixes.

Deeper than 330? Hopefully you can figure it out for yourself by then.

 

[captndale]

Deeper than 330? Hopefully you can figure it out for yourself by then.

Exactly. At this level, if you think you need some kind of certification you definately are not ready to do the dive. Asking the question is a disqualifier.

 

[Cave Diver]

Deeper than 330? Hopefully you can figure it out for yourself by then.

Exactly. At this level, if you think you need some kind of certification you definately are not ready to do the dive. Asking the question is a disqualifier.

The expedition trimix course (330'-400') addresses things like support personnel and safety divers. Not all mixed gas divers are familiar with these additional aspects.

 

[ianr33]

What if I need to do 401' ?

As captndale said, although it might be nice to have these courses around I hope they never become compulsory .

 

[Cave Diver]

What if I need to do 401' ?

As captndale said, although it might be nice to have these courses around I hope they never become compulsory .

Take the same gas that you would for 200.5', just twice as much of it.

Agreed about the compulsory, but I won't dismiss the idea of more advanced training just because I already have some. I know how to plan gasses, deco schedules, etc. for sub 300', but I think the information on safety divers and support personnel could be worthwhile.

 

[Diver0001]

There is no depth limit to what you can do on trimix, although there appears to be a practical limit on what you can do on scuba, OC or rebreather, at somewhere around 1000 feet.

One of the practical limits is that the current deco models all seem to be inadequate for calculating deco on really deep dives. Aside from the practical/logistical problems most of the really deep divers get physical problems. Nuno Gomes usually goes deaf for a while after his really deep dives, Mark Ellyatt has totally gibbled his lungs and has a cough that won't stop... etc. etc. From what I've been told few dives >250m are free of physical symptoms.

If you put it all together, the difficult logistics, the physical issues, the increasingly experimental nature of dives deeper than about 100m, I'd say that a reasonable "practical" limit for scuba diving must be in the 100m range.

R..

 

[Rhone Man]

On DMX Joel Silverstein posted in a thread that if you want to be diving deeper than 250', you really ought to be on a rebreather.

Whilst not completely signing up to that comment, I can see the force of what he says.

Must be what PADI was thinking...

 

[ianr33]

On DMX Joel Silverstein posted in a thread that if you want to be diving deeper than 250', you really ought to be on a rebreather.

Whilst not completely signing up to that comment, I can see the force of what he says.

Must be what PADI was thinking...

How much will they be charging for their rebreather courses ?

OW rebreather diver
AOW rebreather diver
Night rebreather diver
Boat rebreather diver etc etc etc

 

[sea2summit]

On DMX Joel Silverstein posted in a thread that if you want to be diving deeper than 250', you really ought to be on a rebreather.

Whilst not completely signing up to that comment, I can see the force of what he says.

Must be what PADI was thinking...

I think this makes a lot of sense. My first dive in eagle's nest that's all I thought the whole dive "the guys that mapped this OC often on air have way bigger (*lls than I do".

But it swings back to OC deeper, because you have to suck that gas through the loop I'm sure there is a point where it makes sense, physically not logistically, to go back OC.