PADI Training vs.. others

"Charlie Hammond" wrote


>>> [remaining NEUTRALLY BUOYANT throughout an entire dive, by
>>> changing breathing pattern alone]
>>> It may not be good practice.
>>
>>Why not?

> Because it could potentially alter rates of nitrogen absorption and/or
> off-gassing; or increase the risk of lung expansion injury.

Since nitrogen absorption is a function of relative partial pressures,
changing your breathing pattern could slightly alter it. Longer retention
of gas partially depleated of nitrogen or replacing it sooner might slightly
increase the average partial pressure of nitrogen and, therefore nitrogen
absorption. Someone's going to have to come up with some good evidence that
it's significant before I start worrying about it.

Altering breathing patterns does not increase the risk of a lung expansion
injury. Only holding your breath while ascending does that and nobody in
this discussion does, or would recommend that.

Lee

"Charlie Hammond" wrote


>>> [remaining NEUTRALLY BUOYANT throughout an entire dive, by
>>> changing breathing pattern alone]
>>> It may not be good practice.
>>
>>Why not?

> Because it could potentially alter rates of nitrogen absorption and/or
> off-gassing; or increase the risk of lung expansion injury.

Since nitrogen absorption is a function of relative partial pressures,
changing your breathing pattern could slightly alter it. Longer retention
of gas partially depleated of nitrogen or replacing it sooner might slightly
increase the average partial pressure of nitrogen and, therefore nitrogen
absorption. Someone's going to have to come up with some good evidence that
it's significant before I start worrying about it.

Altering breathing patterns does not increase the risk of a lung expansion
injury. Only holding your breath while ascending does that and nobody in
this discussion does, or would recommend that.

Lee

"Reef Fish" wrote

> I have mentioned many time (in the archives) that at times when I was
> so fine-tuned in my weighting that I have pieces of QUARTER lb lead
> for final adjustment, and I could tell the difference between the
> buoyancy of the Caribbean waters and the Atlantic Ocean (as in the
> Bahamas) because of the difference in the salinity of the waters.

You've mentioned a lot of bullshit about how great you think you are. Your
saying it does not make it so.

I don't care how many slivers of lead you stick where, if you have to use
gas in your BCD to control your buoyancy, you're not correctly weighted.

Lee

"Reef Fish" wrote

> I have mentioned many time (in the archives) that at times when I was
> so fine-tuned in my weighting that I have pieces of QUARTER lb lead
> for final adjustment, and I could tell the difference between the
> buoyancy of the Caribbean waters and the Atlantic Ocean (as in the
> Bahamas) because of the difference in the salinity of the waters.

You've mentioned a lot of bullshit about how great you think you are. Your
saying it does not make it so.

I don't care how many slivers of lead you stick where, if you have to use
gas in your BCD to control your buoyancy, you're not correctly weighted.

Lee

"Reef Fish" wrote

> I have mentioned many time (in the archives) that at times when I was
> so fine-tuned in my weighting that I have pieces of QUARTER lb lead
> for final adjustment, and I could tell the difference between the
> buoyancy of the Caribbean waters and the Atlantic Ocean (as in the
> Bahamas) because of the difference in the salinity of the waters.

You've mentioned a lot of bullshit about how great you think you are. Your
saying it does not make it so.

I don't care how many slivers of lead you stick where, if you have to use
gas in your BCD to control your buoyancy, you're not correctly weighted.

Lee

"Lee Bell" <pleebell2@bellsouth.net> wrote

> You've mentioned a lot of bullshit about how great you think you are.
> Your saying it does not make it so.

Nodding

> I don't care how many slivers of lead you stick where, if you have to use
> gas in your BCD to control your buoyancy, you're not correctly weighted.

Disagree.

But, you probably know why.

Curtis

"Lee Bell" <pleebell2@bellsouth.net> wrote

> You've mentioned a lot of bullshit about how great you think you are.
> Your saying it does not make it so.

Nodding

> I don't care how many slivers of lead you stick where, if you have to use
> gas in your BCD to control your buoyancy, you're not correctly weighted.

Disagree.

But, you probably know why.

Curtis

"Lee Bell" <pleebell2@bellsouth.net> wrote

> You've mentioned a lot of bullshit about how great you think you are.
> Your saying it does not make it so.

Nodding

> I don't care how many slivers of lead you stick where, if you have to use
> gas in your BCD to control your buoyancy, you're not correctly weighted.

Disagree.

But, you probably know why.

Curtis

""Magilla"" wrote

>> You've mentioned a lot of bullshit about how great you think you are.
>> Your saying it does not make it so.
>
> Nodding
>
>> I don't care how many slivers of lead you stick where, if you have to use
>> gas in your BCD to control your buoyancy, you're not correctly weighted.
>
> Disagree.
>
> But, you probably know why.

Good point. Different variables.

Lee

""Magilla"" wrote

>> You've mentioned a lot of bullshit about how great you think you are.
>> Your saying it does not make it so.
>
> Nodding
>
>> I don't care how many slivers of lead you stick where, if you have to use
>> gas in your BCD to control your buoyancy, you're not correctly weighted.
>
> Disagree.
>
> But, you probably know why.

Good point. Different variables.

Lee