Rec Trimix

[lamont]

I disagree. I don't think there is any need for trimix for dives above 100ft that can easily be done using nitrox and accelerated deco on nitrox.

Sheesh... Some people will just do anything to appear more tech without any good reason.

One of the main concepts in REAL tech diving is the "mission" approach to diving, where you address a goal with the tools needed to acomplish the mission. Do you need a 200lb lift bag to lift that 2hp outboard? NO, and using the 200lb lift bag will only add unnecessary complexity to the situation.

Same thing in this case: Do you REALLY need trimix for a dive to 90 ft?

~Marlinspike

If I'm running line with a scooter at 90 ft in 20 ft viz max, basically on a night dive because the shallow plankton blooms block out the sunlight in ~45-55F water, I'm taking some 30/30. Yes, 32% is impairing in those conditions to the point of putting the mission at risk...

And trimix adds no complexity, only cost. You have to ask yourself if its worth it. It may be mission-critical, or it may just be a dive site that you want to remember better...

 

[TheRedHead]

I think it is fair to say that the training for trimix is much more complex than the training for recreational nitrox. It is a deco dive with stage bottles whereas rec nitrox is not.

 

[JeffG]

I think it is fair to say that the training for trimix is much more complex than the training for recreational nitrox. It is a deco dive with stage bottles whereas rec nitrox is not.

Rec Trimix has no stage/deco bottles.

 

[lamont]

I think it is fair to say that the training for trimix is much more complex than the training for recreational nitrox. It is a deco dive with stage bottles whereas rec nitrox is not.

you don't need to carry bottles on rec triox dives. doubles or a large single with an h-valve is a good idea, but you don't need to do accelerated deco. we just do 5 mins of deco on backgas.

 

[Marlinspike]

I think its an excuse for people to say they dive trimix when they are not anywhere near a situation or diving proficiency level that would require it.

And I think the rush of some people to get into pseudo tech diving is getting out of hand.

~Marlinspike

 

[TheRedHead]

Rec Trimix has no stage/deco bottles.

I didn't realize that. Thanks.

 

[Kevrumbo]

I think its an excuse for people to say they dive trimix when they are not anywhere near a situation or diving proficiency level that would require it.

And I think the rush of some people to get into pseudo tech diving is getting out of hand.

~Marlinspike

Pseudo Tech Diving has nothing to do with it:
http://www.scubaboard.com/showpost.php?p=482190&postcount=10
http://www.scubaboard.com/showpost.php?p=482221&postcount=13

 

[Marlinspike]

Thanks Kevinrumbo. I am still not convinced however. Hope it works out for you guys and fills in a niche between nitrox and doubles that I dont think really exists.

~Marlinspike

 

[MikeFerrara]

Correct me if I'm wrong but the GUE rec triox class is stricktly no-stop diving and essentially the first part of tech1.

The IANT rec trimix can be combined with the advanced nitrox course in which case limits for training dives are 150 ft with a limited amount of decompression and one decompression gas.

There are plenty of dives that border on recreational depths where a light trimix makes perfect sense and sure makes the dive more enjoyable. Now I wouldn't advise any one with lousy buoyancy control skills to be doing 100+ foot dives with any gas but IMO, a cold dark Lake Michigan wreck with the deck at 100 and the bottom at 130 is a lot more fun with a little helium squirted into the mix.

 

[TheRedHead]

Correct me if I'm wrong but the GUE rec triox class is stricktly no-stop diving and essentially the first part of tech1.

My confusion continues. What's the other part of Tech1? How about Advanced Nitrox and diving with stage bottles?