Tec diver dies in air deep dive challenge

[Vicko]

At 133m with a ppo2 of 2.45-2.30 (and old sensors, look at those readings) you are not breathing air any more but nitrogen enriched air, due to him breathing down the mix it was closer to 16/84.

That's impressively dumb, like I don't want to talk bad about the dead but if he was a tec instructor he must have been denser than the gas he was breathing.

 

[stretchthepenn]

@L13 By calling something a "personal record," you are also saying "personal best." Look it up. Unequivovcal.

Mmmm...no. The meaning can be quite thoroughly equivocal. In context of competitive sporting contests, yes, "personal record" equates to "personal best." But taken in a non-competitive context, it can just mean "personal most," and the person who set that personal mark is entirely free to pass a negative value judgment on themselves or their experience, or say, "I'm not doing that again."

For example, I did an Intarwebz search and came up with an "I set a personal record and it was regrettable" quotation by an amateur astronomer who made observations in really cold weather:

So I set a new record last night at above location, 8 deg F, and unlike the evening above that occurred at Midnight vice 5 am. Also starting temp at sunset was 20 deg F vs 35 deg F, and there was snow on the ground. Big difference. ... I pressed thru to 12:45 am as Moon started to rise. I got 60 recorded obs in 5 hours, my usual pace in spite of cold challenges. However, I am not doing that again. Due to struggle to keep clear images, and fighting the cold, I was not able to admire each object to the level I prefer. For me and my CAT, if the forecast low for the closest city (Grants, NM) is below 20, I will pass (observing spot can be 5 degrees cooler).

(Cold Weather Astronomy - Page 2 - Equipment (No astrophotography) - Cloudy Nights)

 

[kissonerga.ccr]

At 133m with a ppo2 of 2.45-2.30 (and old sensors, look at those readings) you are not breathing air any more but nitrogen enriched air, due to him breathing down the mix it was closer to 16/84.

Can we even trust the sensors to remain linear at this point? After 2.0-2.5, could have been anything

 

[wgw04024]

I bet he ran across some Peter Zeihan videos...

 

[Tracy]

Can we even trust the sensors to remain linear at this point? After 2.0-2.5, could have been anything

I think fresh sensors are more capable than we give them credit for. After a mechanical issue at depth resulting my unit giving itself an oxygen flush, I saw them over 4.0 once. Based on depth, I think that was surprisingly and scarily accurate.

 

[kissonerga.ccr]

I think fresh sensors are more capable than we give them credit for. After a mechanical issue at depth resulting my unit giving itself an oxygen flush, I saw them over 4.0 once. Based on depth, I think that was surprisingly and scarily accurate.

Somehow, i don’t ever want to find out…

Edit: just double-checked it, APD’s manual for my EVP says the display will not show anything above 2.55, no matter how high PPO2 is

 

[Tracy]

Trust me, finding out wasn't part of the dive plan.
This was on a shearwater controller.

Somehow, i don’t ever want to find out…

Edit: just double-checked it, APD’s manual for my EVP says the display will not show anything above 2.55, no matter how high PPO2 i

 

[Joneill]

@L13, I'll give you a serious response; evidently you missed my emojii.
By calling something a "personal record," you are also saying "personal best." Look it up. Unequivovcal.

The implication that deeper is better, i.e. "best," is what is wrong with referring to personal record.
Call it your max depth without assigning it a goodness adjective.
My max depth (on air) was 184 ft. It was the stupidest dive I've ever done; if anything -- I mean anything -- had gone sideways, I'd not have survived. Would going to 185 ft now be a personal record?

You overthink things - most folks don’t analyze words so deeply.

 

[tursiops]

You overthink things - most folks don’t analyze words so deeply.

Clearly some don't care to try and communicate, or to understand what someone else is saying.
Words do have meaning....but you have to mean them and someone has to read them.
I'd say many underthink things.....

 

[stretchthepenn]

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