How deep?

[Madfish]

Originally Posted by Mal Bridgeman

Have you ever done this routine?

Oooo I am a bit deep so I am probably a bit narced...

Best be on top of my game then.....

So check depth .... yep that's good ..... oh what was it? ....best check again... yep that's good ..... oh better check gas .... yep that's good..... oh what was it? .... best check again..... yep that's good ..... oh better check depth.... yep that's good ..... oh what was it? ....best check again... yep that's good ..... oh better check gas .... yep that's good..... oh what was it? etc etc etc

oh time to thumb the dive

that was a great dive but I can't remember much of it .....

Been there, got the t-shirt, then couldn't remember where I put it

Di

[Ian@1904]

Originally Posted by sccs

don't think its best to call BB a camel thou..

Yup she get the right hump with you

[Buoyant Babe]

Originally Posted by Spacehopper

Point of order madame chairperson, that's a camel toe, not a foof.

Gareth

How would you know? You were so traumatised at my rubber shorts I didn't think you'd noticed anything! Bad Gareth. BAD boy!

[NotDeadYet]

Originally Posted by Mal Bridgeman

Have you ever done this routine?

Oooo I am a bit deep so I am probably a bit narced...

Best be on top of my game then.....

So check depth .... yep that's good ..... oh what was it? ....best check again... yep that's good ..... oh better check gas .... yep that's good..... oh what was it? .... best check again..... yep that's good ..... oh better check depth.... yep that's good ..... oh what was it? ....best check again... yep that's good ..... oh better check gas .... yep that's good..... oh what was it? etc etc etc

oh time to thumb the dive

that was a great dive but I can't remember much of it .....

There are alternatives

The last proper deep air dive I did (9/10 yrs ago now, maybe more) went along exactly those lines. Misread my gauge completely, it was only when I got to my first stop and looked at the max depth that I noticed I was close to 20m deeper than I thought it said.

Only I didn't think it was a particularly great dive, I could hear bells at depth, my vision went and I could only see a patch straight ahead, horrible metallic taste to the air. I churned through so much air at depth that I didn't think I'd have enough to complete the deco (only just did it). That was it for me, I never dived air past about 35m after that (max depth on that dive was 89m).

I started using trimix diluent in my rebreather on the second dive after I got it and three and a half years later I'd never used air dil until a couple of months ago. 30m wreck in the Forth, really easy, really simple dive, decent vis too. I got down the shot and was so narced I swam in the opposite direction to the wreck and grumbled about how crap it was.

Cheers,

Stuart

[Bantam]

Originally Posted by Finless

Seriously, you don't think that air diving to certain depths either builds up your resistance or enables you to learn to function better? Perhaps I just learned to feel more comfortable? I just found the analogy to drinking alcohol to be very true?

I think it does for some people and doesn't for others, but as with decompression and predisposition to the bends, I think getting Narcosis is affected by more factors than just depth and being dived up?
There's environmental concerns, visibility, task loading, hydration etc.. etc..

I can think of three dives which were all similar depth but I had totally different experiences.

Did a dive in Lanzarote on a Dolphin RB below 50m (last time I posted the depth I got a bit of a kicking so suffice to say it was *below* 50m) flying the RB manually not on trimix, and I didn't feel narced at all. Viz was amazing

Did a dive with Digger and Woz in Swithland down to the 50m point and had the anaesthetic taste in my mouth, felt mildly narked, but felt quite nice (like I'd had 10 pints but then I seem to remember everything instead of forgetting stuff).

Then recently did the Rondo down to the bottom (and sadly found the weightbelt from one of the party who are raffling the D9 for the lost diver. Poor guys) and felt totally A-OK. Strangely no taste this time or feeling that pissed. Only thing you do notice is that everything becomes very loud which is probably due to pressure and thickness of suit

So my point? You can't have a broad brush approach to the impact of depth on divers - one guy might go to 60m and feel 100% ok, the next bloke could be battered. Best take the worst case scenario.

Either that or do a pot dive to 50m cos that's just awesome fun

[secondrule]

Last dive, I went down, along and came up, went no deeper than the bottom and when I heard the sides of the tank touch, I knew it was time to ascend.

All in all a great dive.

[vidiot]

finless,

what can i say? you definatly have a lot of theories about all this which is nice, but i know a good friend of mine in nice warm water teaching deep speciality, who got narked at 30m and had to abort the dive.. now i can hear you say maybe he was new and wasnt confident or hadnt built up his depth tolerance- but he was 24yrs old, diving on average 2-3 dives a day with over 2,000 dives at the time.. Just goes to show that you never know what can happen

[TerryH]

Originally Posted by vidiot

finless,

what can i say? you definatly have a lot of theories about all this which is nice, but i know a good friend of mine in nice warm water teaching deep speciality, who got narked at 30m and had to abort the dive.. now i can hear you say maybe he was new and wasnt confident or hadnt built up his depth tolerance- but he was 24yrs old, diving on average 2-3 dives a day with over 2,000 dives at the time.. Just goes to show that you never know what can happen

Yep, but then again it was hot, he hadnt had his morning tea/coffee/shag,
was knackered from the night before and a whole host of other reasons.

In the same way you can get an undeserved hit. you can still get narced
even after 2000 dives.

Which kinda says that you'd need a lot of mates doing 2000 dives and
getting narced at 30m for this to be relevant.

[vidiot]

yeah terry very good counter arguement, or alternatively if you read what my point was, it doesnt matter who you are, how experienced you are, or even how much you talk the talk by posting on a website- that people shouldnt be so complacent over depth because shit happens.

[sccs]

Originally Posted by vidiot

yeah terry very good counter arguement, or alternatively if you read what my point was, it doesnt matter who you are, how experienced you are, or even how much you talk the talk by posting on a website- that people shouldnt be so complacent over depth because shit happens.

shit happens no matter what depth your at tho. the only time the depth proves a problem is when your not prepared for the shit to hit the fan.

and as your prev post states, narcosis can kick in at almost any depth depending on the individual and the current circumstances, so that makes the depth argument irrelevant doesn't it?