Advanced Trimix for Closed Circuit Rebreathers

Well, this afternoon my good dive buddy Nailer and I (and our new buddy Larry) threw up our caps (hoods?) as we graduated from Advanced Closed Circuit Rebreather (CCR) Trimix class (I believe this is called Mod 3 in Europe). This means that I can use hypoxic amounts of oxygen (less than 16%) mixed with helium and nitrogen, in various amounts, as diluent when mixing with pure oxygen in a closed breathing loop. I am now certified to dive to 330 feet, which opens up a lot of diving options.

It seems like forever ago, but just 7 months prior I started my first CCR class, Air Diluent CCR cert. It did take me months to find the groove on the Meg, but sometime along the way it just clicked. I’m glad I stuck with it because honestly, those first dozen dives or so had me thinking, what have I done?. Now I feel pretty natural in the water again, not as carefree as on OC before I made the switch, but definitely confident, which is huge.

Continue Reading June 16th, 2008