No, I want the skills as well. As someone else suggested, certification beyond your dives is better than knowledge below your dives. Even if I rarely use the deco procedures, it is a valuable skill.
More than "Advanced", but not really "Technical"
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No, I want the skills as well. As someone else suggested, certification beyond your dives is better than knowledge below your dives. Even if I rarely use the deco procedures, it is a valuable skill.
Scubadude_LA
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Ok, trying to help, here we go,
I assume most divers are taught this in openwater classes. You should have been trained in tables, taught to plan to some extent and know what the time limit is for a depth and don't pass it. We all make mistakes, but unless you really messed up you should not incur so much deco with a slight overstay that wouldn't easily be worked out by the computer with some shallow stops following the computer, no special training needed other that reading the computer manual and understanding what it is telling you, or referring to tables you were trained on. Some mistakes hurt. You would also be wise to carry a table in a pocket to reference at depth in case of a computer failure.
From the TDI site describing AN:
"The TDI Advanced Nitrox Course qualifies divers to use enriched air nitrox from EAN 21 through EAN 100 within your current certification level to a maximum depth of 40 metres/130 feet during dives that do not require staged decompression. Often taught in conjunction with the TDI Decompression Procedures course, this can be considered the foundation of your technical diving career. Advanced Nitrox is also a great course for those wanting to extend their bottom times in shallower depths such as scientific diver, and a must for SCR or CCR divers."
Like Tursiops said, Notice, No Deco. Then a mention of DP. AN is meant to extend your time by offsetting nitrogen loading using higher O2 so stay longer, but still not go into deco.
I think that there is some confusion introduced by mention of "ok in single tank for some classes" then some instructors requiring doubles some not. So I see where you guys are coming from, I would be confused to
if I hadn't already been down that path.
I don't think anyone is getting personal about this from what I can see. I think your getting solid advice.
If it were me I would pick an agency and order the student pack for AN or the equivalent, like $40 or so. Read it cover to cover, do the student work in it.
Your out $40 and a few nights reading, no gear investment and no loss if you proceed with training. I feel you might have a different perspective then, regardless of this or that gear requirements you are worried about now.
This is how I did it and I didn't finish the book before I realized that I had a lot to learn coming from an open water background even with decades of diving under my belt.
In AN you will be planning a bunch, yes for for staying out of deco, but in a way very similar to how you would need to approach it if it were deco. Many of the things you will use that you didn't in OW will come to fruition. Gas planning in general, gas planning for lost deco, high O2 mixes, more advanced CNS/OTU planning, how to cut tables and use a computer as backup to that and why. Then while gas planning you will see how much backgas you have to save in that single tank incase you lose your deco gas, THEN, you will realize that you probably won't have much time in a single to get into deco anyway if you have saving enough gas for contingencies. Which is why I think so many folks are standing ground on the "light" deco mentality. AN ore equiv really is what you are looking for imo.
When you work some of the problems and plans you will see why there really is not much of a window between NDL and deco on a single tank if any. I promise
Light deco is unplanned oops I messed up my Rec profile so I will use what I learned in OW to work my way back to the surface safely. You will see. I promise.
Cheers, hope to dive with you someday
This is my final post on the matter.
I assume most divers are taught this in openwater classes. You should have been trained in tables, taught to plan to some extent and know what the time limit is for a depth and don't pass it. We all make mistakes, but unless you really messed up you should not incur so much deco with a slight overstay that wouldn't easily be worked out by the computer with some shallow stops following the computer, no special training needed other that reading the computer manual and understanding what it is telling you, or referring to tables you were trained on. Some mistakes hurt. You would also be wise to carry a table in a pocket to reference at depth in case of a computer failure.
From the TDI site describing AN:
"The TDI Advanced Nitrox Course qualifies divers to use enriched air nitrox from EAN 21 through EAN 100 within your current certification level to a maximum depth of 40 metres/130 feet during dives that do not require staged decompression. Often taught in conjunction with the TDI Decompression Procedures course, this can be considered the foundation of your technical diving career. Advanced Nitrox is also a great course for those wanting to extend their bottom times in shallower depths such as scientific diver, and a must for SCR or CCR divers."
Like Tursiops said, Notice, No Deco. Then a mention of DP. AN is meant to extend your time by offsetting nitrogen loading using higher O2 so stay longer, but still not go into deco.
I think that there is some confusion introduced by mention of "ok in single tank for some classes" then some instructors requiring doubles some not. So I see where you guys are coming from, I would be confused to
if I hadn't already been down that path.
I don't think anyone is getting personal about this from what I can see. I think your getting solid advice.
If it were me I would pick an agency and order the student pack for AN or the equivalent, like $40 or so. Read it cover to cover, do the student work in it.
Your out $40 and a few nights reading, no gear investment and no loss if you proceed with training. I feel you might have a different perspective then, regardless of this or that gear requirements you are worried about now.
This is how I did it and I didn't finish the book before I realized that I had a lot to learn coming from an open water background even with decades of diving under my belt.
In AN you will be planning a bunch, yes for for staying out of deco, but in a way very similar to how you would need to approach it if it were deco. Many of the things you will use that you didn't in OW will come to fruition. Gas planning in general, gas planning for lost deco, high O2 mixes, more advanced CNS/OTU planning, how to cut tables and use a computer as backup to that and why. Then while gas planning you will see how much backgas you have to save in that single tank incase you lose your deco gas, THEN, you will realize that you probably won't have much time in a single to get into deco anyway if you have saving enough gas for contingencies. Which is why I think so many folks are standing ground on the "light" deco mentality. AN ore equiv really is what you are looking for imo.
When you work some of the problems and plans you will see why there really is not much of a window between NDL and deco on a single tank if any. I promise
Light deco is unplanned oops I messed up my Rec profile so I will use what I learned in OW to work my way back to the surface safely. You will see. I promise.
Cheers, hope to dive with you someday
This is my final post on the matter.
Last edited:
OP
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OK, so we are now getting somewhere.
*WARNING* Recreational and vacation divers be advised!
You are NOT to question or challenge the tech priesthood. Buy the gear and get the formal training. In the end, you will know if this was right for you or not.
---------- Post added January 14th, 2014 at 06:05 PM ----------
Apologies Scubadude_LA, our posts hit simultaneously. No reference to you.
*WARNING* Recreational and vacation divers be advised!
You are NOT to question or challenge the tech priesthood. Buy the gear and get the formal training. In the end, you will know if this was right for you or not.
---------- Post added January 14th, 2014 at 06:05 PM ----------
Apologies Scubadude_LA, our posts hit simultaneously. No reference to you.
this discussion has finally come to fruition. I am in a NAUI "Intro To Tech" class right now (forgot the acronym for it, and not motivated to go look it up from my notes - though NAUI requires this class as a prerequisite to the AN/DP). Taking it has led me to the following conclusion - AN/DP is the "next step". If I want to "go there", this is the skill set required. There is no "ground in between". I guess the class served its purpose as I am currently in the process of getting enough bodies together to make the class happen.......
Thanks for the conformation..... "dive on"..
2nd EDIT: Now, to do the AN/DP class, I am aware of the gear I must have [doubles, reel, lift bag, min-40 deco bottle, and much more], and I must make a decision..... and I did .......
Thanks for the conformation..... "dive on"..
2nd EDIT: Now, to do the AN/DP class, I am aware of the gear I must have [doubles, reel, lift bag, min-40 deco bottle, and much more], and I must make a decision..... and I did .......
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Scubadude_LA
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ok, one last post
rhwetfall,
That's why I think the $40 student kit would be in valuable here.
Congrats on your choice, the journey will be fun.
rhwetfall,
That's why I think the $40 student kit would be in valuable here.
Congrats on your choice, the journey will be fun.
I would suggest that you take the "advanced Nitrox" course. I just completed it with IANDT and you will be certified to dive to 140' and 15 minutes of accelerated deco on up to 50% oxygen. The skills and gear configuration will open your eyes to the "Tech" world without having to go further if you don't want to. You will need a different configuration than you have and will need to carry a pony. The skills you learn are really worth it! Just my .02!
OP
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it didn't cost me more than $40........ but then again, I do not think it was not worth its value from what the instructor is doing with us. It has been one academic class, and three pool sessions to learn where the basic skills of where we are going.... (regrettably, most I already had from being a good "listener" here on SB and being "self motivated" to learn/research (more than the LDS sales pitch - which I despise).....
thanks guys!
Last edited:
OP
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.... there comes a time where you have to "stop", and accept your limitations, or "dive in".
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