whats that?
Interesting what autocorrect did there (and I didn't look). My bad..
Dalton's...
Nitrox course. What's the point?
- Thread starter Dody
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Interesting what autocorrect did there (and I didn't look). My bad..
Dalton's...
My question was mostly rhetorical
No_Stress
Registered
True, make some easy dives without instructor.
Like previously said, the nitrox cert is a good one. Not that u will learn a lot, but u probably need it to fill nitrox.i took it just after owd and didnt regret it
David Novo
Contributor
You could shop around a bit and see if you can get a better deal, or ask if there is some discount if you intend to do additional courses with the same facility.
Irrespective. Having a Nitrox qualification, and using Nitrox is a massive benefit.
It is arguably less of a benefit when doing single dives, or for a single days of diving if the available gas is your bottom time restriction rather than no-stop time.
On day's of repeat diving (like liveaboard's), the benefit is very noticeable. The increased no-stop dive times, reduced nitrogen uptake all give you a better diving experience. You will recoup the cost of the course, with more 'in water' time over a holiday.
Some agencies include basic Nitrox in the core course. Unfortunately, people entering diving for the first time, just sign up based on convenience, and / or cost. Not on the course content, quality of the teaching, safety etc.
A lot of diving tuition is a repeat of information you have previously been taught. It is based on the policy of review what is known (ensure things haven't been forgotten or missed), introduce new information or skills, check for information transfer.
We only teach you mask clearing once, at OW. We then just make it progressively more difficult, progressively deeper, with more task loading or discomfort. So you continuously review the skill and improve it and extend it. This is the same for most of the core diving skills.
Diving theory doesn't really change (It does but I will come back to that). We may simplify things at OW, but the basic, science of gases, (Boyles Law, Constant Volume Law, Charles Law, Daltons Law, Henry's Law,) doesn't change. Toxicity of gases, doesn't change. Do you need to know about the toxicity of gases on your Open Water course? (Hint if you stay within the limits of the qualifications, and follow the recommendations, No.) You are learning a lot of new skills and information. We teach what you NEED to know, there are somethings that are NICE to know. Do you NEED to know the names of all the laws?
One thing that does change, is decompression theory.
The basic principle remains the same. It's about the absorption of inert gases into your tissues. The effect of changes of ambient pressure on this process. The safe release of gases from your tissue as the ambient pressure drops.
The research was really done for the mining and engineering before diving (Look up casinons disease.), decompression theory is also used by NASA (astronauts decompress prior to space walks).
We attempt to 'model' what is happening mathematically. (We have a basic understanding, but don't fully understand it).
Because of this, different theories and approaches exist. What is 'in vogue' changes.
The Buhlmann model is the defacto model (based on Haldane's Tissue Compartment solution). Partly because it is open source (no copyright). Partly, because there is a lot of data, its been around a long time, with millions of dives.
Most computer manufacturers have their own model . This will be a basic core model (often Buhlmann), with padding, adjustment, or additional theories added.
As an example, Suunto currently use's a number of models. RGBM, Fused RGBM, Fused RGBM 2, Tech RGBM.
(RGBM = Residual Gradient Bubble Model). RGBM was first used by Suunto around 2000. So they changed their approach to decompression modelling around 2000.
Irrespective. Having a Nitrox qualification, and using Nitrox is a massive benefit.
It is arguably less of a benefit when doing single dives, or for a single days of diving if the available gas is your bottom time restriction rather than no-stop time.
On day's of repeat diving (like liveaboard's), the benefit is very noticeable. The increased no-stop dive times, reduced nitrogen uptake all give you a better diving experience. You will recoup the cost of the course, with more 'in water' time over a holiday.
Some agencies include basic Nitrox in the core course. Unfortunately, people entering diving for the first time, just sign up based on convenience, and / or cost. Not on the course content, quality of the teaching, safety etc.
A lot of diving tuition is a repeat of information you have previously been taught. It is based on the policy of review what is known (ensure things haven't been forgotten or missed), introduce new information or skills, check for information transfer.
We only teach you mask clearing once, at OW. We then just make it progressively more difficult, progressively deeper, with more task loading or discomfort. So you continuously review the skill and improve it and extend it. This is the same for most of the core diving skills.
Diving theory doesn't really change (It does but I will come back to that). We may simplify things at OW, but the basic, science of gases, (Boyles Law, Constant Volume Law, Charles Law, Daltons Law, Henry's Law,) doesn't change. Toxicity of gases, doesn't change. Do you need to know about the toxicity of gases on your Open Water course? (Hint if you stay within the limits of the qualifications, and follow the recommendations, No.) You are learning a lot of new skills and information. We teach what you NEED to know, there are somethings that are NICE to know. Do you NEED to know the names of all the laws?
One thing that does change, is decompression theory.
The basic principle remains the same. It's about the absorption of inert gases into your tissues. The effect of changes of ambient pressure on this process. The safe release of gases from your tissue as the ambient pressure drops.
The research was really done for the mining and engineering before diving (Look up casinons disease.), decompression theory is also used by NASA (astronauts decompress prior to space walks).
We attempt to 'model' what is happening mathematically. (We have a basic understanding, but don't fully understand it).
Because of this, different theories and approaches exist. What is 'in vogue' changes.
The Buhlmann model is the defacto model (based on Haldane's Tissue Compartment solution). Partly because it is open source (no copyright). Partly, because there is a lot of data, its been around a long time, with millions of dives.
Most computer manufacturers have their own model . This will be a basic core model (often Buhlmann), with padding, adjustment, or additional theories added.
As an example, Suunto currently use's a number of models. RGBM, Fused RGBM, Fused RGBM 2, Tech RGBM.
(RGBM = Residual Gradient Bubble Model). RGBM was first used by Suunto around 2000. So they changed their approach to decompression modelling around 2000.
OP
Dody
Contributor
About 10 with a DM as company rather than supervisor. About 10 just with my buddy.
OP
Dody
Contributor
David Novo
Contributor
OP
Dody
Contributor
I am not sure I understand the question. I have never done it before so I assume that you mean you can’t enter the exact value, that some computers can handle decimals. Theoretically, if it was the case, I would be conservative and use the next digit up for the sake of MOD. However, for NDL and computer entry, that should be the other way around so I will round down. I need my computer to calculate the nitrogen exposure. MOD, I can deal with it myself.
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