Trimix Max Depth

[sea2summit]

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

Hey there is already a "recreational rebreather" certification out there. Whatever that means.

 

[ucfdiver]

Hey there is already a "recreational rebreather" certification out there. Whatever that means.

That means they looked cool and the diver had the money

 

[ianr33]

That means they looked cool and the diver had the money

Operative word being "had"

 

[wedivebc]

Operative word being "had"

You think rebreathers are expensive, try owning a boat.

 

[Scott L]

You think rebreathers are expensive, try owning a boat.

That's what friends are for...

 

[Colliam7]

My question is this, PADI say something like 190 feet is your max depth with trimix. I think TDI site said over 300 feet was you max depth with trimix. ... Is there different types of trimix?

As mentioned, I suspect the 190 ft depth limit was not for 'trimix' in general but rather for normoxic (21% O2) trimix, where the MOD is ~187 / 190 ft. In the PADI Trimix course you also use different / lower concentrations of oxygen, adjusted for your planned maximum depth. No, you do not necessarily need another course just to use either hyperoxic or hypoxic trimix. However, as several have mentioned, if you reach a point where you are looking at dives in the >300 ft range, there may be a logistics chain for which most trimix courses, including the PADI course, do not specifically attempt to prepare you. The market for tec is relatively small enough, the market for trimix courses is smaller, and the market for divers seeking training to go to more extreme depths (e.g. >300 ft) is sufficiently small, that PADI would probably not consider it a reasonable investment to concentrate on it, UNLESS someone wrote a compelling Distinctive Specialty course outline and application for it.

I took the DSAT Tec sequence, through Trimix. I regularly use normoxic and hypoxic trimix blends, and even use hyperoxic trimix at times. The course prepares you to select a trimix blend for a particular planned dive based on considerations such as maximum depth, and the target END (e.g., no greater than 130 ft) and ppO2 limits, not simply on the basis of a particular blend. The course has recently been revised, to INCREASE the minimum and maximum depths which the diver must be exposed duirng training. For the Tec Trimix course, by the last dive, the minimum depth is now 245 ft, while the maximum depth is now 300 ft.

So if I understand right it sounds like PADI uses normoxic trimix and TDI uses hyperoxic trimix.

Not exactly, at least as far as the PADI comment goes. In the PADI Tec Deep sequence, you can now use normoxic trimix on Dive 12 of the course sequence. But, in the PADI Tec Trimix course, you will use different mixtures, including hypoxic trimix. The only limitation in the standards, besides depth, is that the trimix blend use must have at leat 10% oxygen.