PSAI Narcosis Management course - 73m on air

[usmarinekurt]

I can annoy it! From the Marineweather underground: Sun W winds around 5 kt. Waves 1 foot or less. Looks good for the U853 this Sunday!
Have you dived the Larchmont before?

Il call you were going out of narragansette

 

[Kevrumbo]

I'm not an advocate, but I'm not a detractor either, I'm a realist. Deep diving on air was done for years because that was all that was available. There were no PADI, NAUI,.....name it tables except the USN air tables, good to 190’. I haven't done any really deep diving in years, those days are mostly over. I did make several dives in NC last year to 100+ FSW on air, but I don’t consider that deep. . . .As far as knowledge and experience you haven’t displayed any in this thread. Trimix I'm sure is great but it is not essential for deep diving. If it makes you feel superior to those that don’t use Trimix then enjoy yourself. . .

The late great Wreck Divers Kimiuo Aisek and Klaus Lindemann did most of their pioneering work in re-discovering the wrecks of Chuuk Lagoon --without the benefit of Trimix.

Kimiuo Aisek
Klaus Lindemann, Pacific Daily News Obituary, HAILSTORM Over Truk Lagoon, Minimum Impact Diving, Chuuk, Eco-Photo Explorers, EcoPhoto, Eco Photo

There are some deep dives over 45m with wreck penetration however, that I would not do without trimix --even with the price of Helium in Chuuk (Blue Lagoon Resort Dive Ops) at $4.50/cuft and Oxygen $1.67/cuft! One 20/20 "Economy" Trimix dive (twin AL80's tanks) with Eanx50 and O2 (AL30 deco bottles) cost $190 total for He/O2 gas blending . . .[MOD 60m @1.4ata; END 45m]. . . and I did 10 dives using these mixes last year November 2011. . .

Be safe & prudent; recognize the effects of Narcosis and take the necessary measures to mitigate those risks --and I can honestly & conspicuously proclaim that from hubris/Lessons Learned:
http://www.scubaboard.com/forums/near-misses-lessons-learned/264517-type-i-bends-hit-chuuk.html

 

[The Chairman]

There are some deep dives over 45m with wreck penetration however, that I would not do without trimix

Every diver has their own, personal limits and should respect them. That doesn't mean that everyone has the same limits.

 

[ajduplessis]

..... You have a lot of "facts" about me for someone that doesn't know me.

ditto

As far as knowledge and experience you haven’t displayed any in this thread.

ditto

Trimix I'm sure is great but it is not essential for deep diving. If it makes you feel superior to those that don’t use Trimix then enjoy yourself.

If you feel making well informed and educated decision makes one superior, so be it!!

Perhaps some training at the local charm school would be a benefit to you?

From the one that called my tongue in cheek statement lame! Maybe we should both attend?!?

 

[PfcAJ]

Every diver has their own, personal limits and should respect them. That doesn't mean that everyone has the same limits.

Every driver has their own personal alcohol limits and should respect them. Personally, I can drive with well over a .08, done it many times for years and I haven't died yet! I've been driving drunk since you were in UnderRoos! Its all about constant self assessment: Am I between the lines? How's my speed? Are my hands at 10 and 2? Gas and brake pedals are muscle memory for me. I learned all about it in my Drunk Driving course I took over on I-75. Its an official course! If I die, its my business, no one else's. We live in 'Mericuh where we're all free to do whatever we want. Who are you to tell me what my alcohol limit is?

Does that sound absurd? It is. If I can't get a ride home (or don't want to pay for a taxi), I just don't drink. Same with diving. No helium (at a price I want to pay) and I stay shallow or out of the water. There are lots of dives that I haven't done because of this.

 

[AfterDark]

Il call you were going out of narragansette

I'll be sitting by the phone, my gear in a pile around me waiting for your call! And I'll dive all the way to the bottom, narcosis and caution be damned, because the scuba police are only here, not in the real world.

 

[syntaxerrorsix]

I've never considered the DD analogy to be a sound. The .08 limit is absolutely arbitrary and more often than not set by political motivation and not science.

There are classes that let divers gain experience with deep air.

Some divers get narked in the bathtub if the lights are off and the water is starting to cool off.

Narcosis is in fact subjective. END's should be determined by individual performance. Helium is helpful to me past 150' in warm waters while some folks won't dive past 80' without 30/30. Subjective.

 

[AfterDark]

I've never considered the DD analogy to be a sound. The .08 limit is absolutely arbitrary and more often than not set by political motivation and not science.

There are classes that let divers gain experience with deep air.

Some divers get narked in the bathtub if the lights are off and the water is starting to cool off.

Narcosis is in fact subjective. END's should be determined by individual performance. Helium is helpful to me past 150' in warm waters while some folks won't dive past 80' without 30/30. Subjective.

You made me belly laugh! Excellent post!
!

 

[PfcAJ]

I've never considered the DD analogy to be a sound. The .08 limit is absolutely arbitrary and more often than not set by political motivation and not science.

There are classes that let divers gain experience with deep air.

Some divers get narked in the bathtub if the lights are off and the water is starting to cool off.

Narcosis is in fact subjective. END's should be determined by individual performance. Helium is helpful to me past 150' in warm waters while some folks won't dive past 80' without 30/30. Subjective.

And that method is based on science? The person under the influence of something is in a really poor position to judge how much they're under its influence. Drunk drivers always think they're "good to drive". Same thing. You ARE impaired, and that impairment extends as far as to influence the degree that you think you're impaired. That's ridiculous.

Interesting that almost every death past 100' involves ENDs greater than 100'. Correlation doesn't mean causation, but its tough to have causation without it... I'll patiently sit here while someone comes up with a list of 5 (just 5) deaths that occurred past 100' with an END of less than 100'. Surely someone will deliver...

 

[syntaxerrorsix]

And that method is based on science? The person under the influence of something is in a really poor position to judge how much they're under its influence.

Yes, based on empirical evidence and peer review it absolutely is science. Same could be said for alcohol it isn't however practical to make that an option and the risk to others is far greater when drivers stray from their known tolerances. In order for the science to work the diver or driver requires discipline.

Drunk drivers always think they're "good to drive". Same thing. You ARE impaired, and that impairment extends as far as to influence the degree that you think you're impaired. That's ridiculous.

Drunk drivers haven't been vetted by their peers. Some of them may be just fine at a .09.

You are only correct in your assumption if you feel impairment starts at anything greater than zero. I don't, if you do that's absolutely fine if that's been your experience.

Interesting that almost every death past 100' involves ENDs greater than 100'. Correlation doesn't mean causation, but its tough to have causation without it... I'll patiently sit here while someone comes up with a list of 5 (just 5) deaths that occurred past 100' with an END of less than 100'. Surely someone will deliver...

Yet here we still try to use it as evidence to the contrary

I'm not knocking your decisions or your methods I'm just pointing out that individual results may vary.