An age-old question: ways to 60m.

[iho]

Do I understand correctly that after TDI ANDP, there are two main ways to go deeper, down to 60 meters?

1. OC Trimix – Take a Trimix course (around 5 days), and then you're good to go. But each dive will cost you an extra ~$250 just for the helium.
2. CCR – Buy a CCR unit and complete MOD1, Helitrox, and Mixed Gas training (about 15 days total, spread out over time). After that, you're free to dive, and each dive costs around $50 for consumables.

Is that correct?

P.S.
I know about Extended range but I am not fill comfortable on air down to 50m....

 

[Boarderguy]

I'm a deep air person. That's the cheapest way but it's often frowned upon by those with more money than me. Air density and narc are the biggest issues. I'm routinely down below 150 fsw on air with an occasional 180-190. I'm working towards 210 just to do it. Nothing I really want to see is much past 170 right now.

Do more dives on air at 150 and spend time at depth. Start going to 160 once you feel comfortable there and start spending time. Bounce to 170 and then hang out at 150-160 again. And so on and so on. It all really comes down to how you react to narcocis and how your buddy reacts.

Doubles, SM, and deco bottles are almost necessary for going that deep. I've done 170 with a single 119 and a pony but it was a bounce and not worth it. Double 100s with an AL40 gives me gas for days essentially.

 

[inquis]

Buy a CCR unit and complete MOD1, Helitrox, and Mixed Gas training

Since you have AN/DP, you could start CCR with Helitrox. Just understand that OC is far more forgiving if you can't dive on a regular basis.

 

[JMBL]

All as been said I guess. I'll just add this : going CCR is logical if you want to dive deep indeed, but it's a long way. I'd first get some more dives on OC to get used to "complex dives" (longer, deeper, multi tank, and multi gaz) and then get CCR training. All the CCR clutter and new techniques can act as a deterrent at first glance.

 

[Wookie]

I have been to 60m many times on air, with some mix of O2 deco gas. For many folks it’s not that big a deal.

 

[Searcaigh]

How frequently are you planning to do 60m dives?

I went down the OC route and while many of my friends have CCRs not many use them frequently enough to validate how much they have spent on the units and training, we're talking thousands of dollars.

My personal vice is UW photography and I spend less than using a CCR. I don't do much tech diving now but I always carry a camera.

I'm not sure how your local TDI instructors work, but my IANTD instructor would have insisted on OC Trimix before moving on to CCR.

 

[happy-diver]

For those that are mechanically inclined CCR, is as straightforward, as crude taking to birds in a slick
If you are a competent diver also able to comprehend what you read you can dive a rebreather POP

So think about self important types, and those that say it is difficult and you can't do it as they can't

Advice Number One
No it is not buoyancy you have to re learn, you just want to go around stuff instead of going over it

 

[DiveLikeAMuppet]

The question is what do you want to dive and what can you dive regularly. If you are in a place where you can run 2 hour dives every week, CCR is definitely the way. If you would dive between 40-60 meters one week per year and have no tec boats in your location, OC.

With ANDP you can do helitrox mod1, get 50+ hours on the unit and do mod2. So in total about 12 days of training but loads of diving to get to mod2 level.

 

[iho]

yep, thanks for reminder - checked TDI reqs for mixed gas ~50 dives on given CCR... about 2 years with my diving realistically...

 

[ChuckP]

Do I understand correctly that after TDI ANDP, there are two main ways to go deeper, down to 60 meters?

1. OC Trimix – Take a Trimix course (around 5 days), and then you're good to go. But each dive will cost you an extra ~$250 just for the helium.
2. CCR – Buy a CCR unit and complete MOD1, Helitrox, and Mixed Gas training (about 15 days total, spread out over time). After that, you're free to dive, and each dive costs around $50 for consumables.

Is that correct?

P.S.
I know about Extended range but I am not fill comfortable on air down to 50m....

I've seen some dive schedules with gas choices and it can be really abusive - there's 4 dives, I wouldn't do large He dives except the last dive to 60m - I think we did 18-20/5 on a few dives.

Two need to be deeper than 40m and all should be between 30 and 60m. There is a lot of core skills that need taught

So much depends on the conditions and the students comfort / skill level.