Skipping open circuit and going straight to CCR

[takez0]

This is my first post here. I've learned a ton on this board and I'm grateful for the insights you all provide.

I'm getting into technical diving and I'd like to jump straight into a CCR. Does the group see any benefit or hindrance in skipping open circuit tech training costs and equipment costs and going straight into a CCR? CCR's are obviously an investment. I'd rather not spend money on a new BCD, manifold, tanks, etc., that would only be used specifically for dual-tank open circuit, considering I know where I want to end up already. Let me know your thoughts or if you think this is missed training opportunity.

 

[Gone for diving]

If using a pO2 display and are trained in loop flushing techniques it’s very easy and reasonably safe to dive to 30’, and for very long dives.

What do you use for electronics? It's not totally clear on your website....

 

[OceanOpportunity]

What do you use for electronics? It's not totally clear on your website....

Most people add a Shearwater.

 

[OceanOpportunity]

Not familiar with the term MOD0

I teach Mod 0. The training was developed specifically for the RD1 rebreather as the prerequisite to Mod1. There is also a Mod0+ module which is a really amazing way to dive.

 

[lostsheep]

I teach Mod 0. The training was developed specifically for the RD1 rebreather as the prerequisite to Mod1. There is also a Mod0+ module which is a really amazing way to dive.

Be careful with that Mod verbiage , you might offend some of the old schoolers around here

 

[OceanOpportunity]

Be careful with that Mod verbiage , you might offend some of the old schoolers around here

I’m not too concerned. It’s all kind of ridiculous anyway. All instruction should be aligned with gas physiology and not the arbitrary leveling that’s occurred in both oc and cc.

 

[Nick_Radov]

I’ve read lots of misunderstandings here about o2 only units. You do not spontaneously combust at 20’ depth. Oxygen exposure limits are dose dependent. If using a pO2 display and are trained in loop flushing techniques it’s very easy and reasonably safe to dive to 30’, and for very long dives.

How many dive sites have interesting stuff to see shallower than 30ft? There are a few places in the tropics where that could work but otherwise it seems pointless. Most of the good sites that I've dived all around the world have been deeper.

With such a shallow limit why not just free dive instead?

 

[OceanOpportunity]

How many dive sites have interesting stuff to see shallower than 30ft? There are a few places in the tropics where that could work but otherwise it seems pointless. Most of the good sites that I've dived all around the world have been deeper.

With such a shallow limit why not just free dive instead?

There are certain experiences that benefit from being on the bottom - photography, spear fishing, harvesting. I actually make a living spending 5 hours a day in 20’ of water. .

 

[Nick_Radov]

There are certain experiences that benefit from being on the bottom - photography, spear fishing, harvesting. I actually make a living spending 5 hours a day in 20’ of water. .

Yikes. Five hours a day at elevated PPO2 can't possibly be healthy. The cumulative oxidative stress is insane.

 

[OceanOpportunity]

It’s not elevated po2. That’s a common misperception. I dive at 1.0 which allows 5 hrs per day and no REPEX penalty

 

[Wibble]

How many dive sites have interesting stuff to see shallower than 30ft? There are a few places in the tropics where that could work but otherwise it seems pointless. Most of the good sites that I've dived all around the world have been deeper.

With such a shallow limit why not just free dive instead?

Cenotes?