27th of December 2006

[Mark]

Originally Posted by nickb

9m/min is a fairly standard rate across agencies these days, is it not.

Until you're used to doing it, it does seem pretty quick but you really don't want to be hanging about racking up more deco.

Mark, were you already GUE trained at the time?

Yes I was and I had completed about 30 trimix dives since training.

Cheers,

Mark.

[MartyC]

Mark,
As a matter of interest, do you shut / partially shut your suit valve at depth? I know some do. Just curious

[Mark]

Originally Posted by MartyC

Mark,
As a matter of interest, do you shut / partially shut your suit valve at depth? I know some do. Just curious

Hi,

no I don't, it was wide open throughout the dive.

Cheers,

Mark.

[Diving Dude]

Wow Mark, you seem to have got off lightly.

The elite crowd have left you alone.

Maybe it's already been discussed privately.

l wonder where are all the posts telling you that you didn't take the dive seriously enough, didn't build up to it, didn't discuss and plan the dive properly re-ascent times, bad in water communication regarding you being un-happy with a faster ascent than usual, lack of buddy/ team skills leaving you solo on the surface, lack of dry suit control skill, lack of buddy/team awareness that you we in denial....the list goes on.

According to some folk there is a lot that could be learnt if this is discussed in full, however it seems rather quite in this thread?

Just out of interest during your rapid ascent did you stay horizontal or go vertical?

[Mark]

Originally Posted by Diving Dude

Wow Mark, you seem to have got off lightly.

The elite crowd have left you alone.

Maybe it's already been discussed privately.

l wonder where are all the posts telling you that you didn't take the dive seriously enough, didn't build up to it, didn't discuss and plan the dive properly re-ascent times, bad in water communication regarding you being un-happy with a faster ascent than usual, lack of buddy/ team skills leaving you solo on the surface, lack of dry suit control skill, lack of buddy/team awareness that you we in denial....the list goes on.

According to some folk there is a lot that could be learnt if this is discussed in full, however it seems rather quite in this thread?

Just out of interest during your rapid ascent did you stay horizontal or go vertical?

Hi Howard,

yes this thread is pretty quiet. I should have entitled it 'GUE trained diver makes cock-up' or 'Deco on-the-fly, literally' to get more interest.

I was vertical feet first, then head first. It wasn't pretty.

Cheers,

Mark.

[JasonP]

Originally Posted by Diving Dude

The elite crowd have left you alone.

Hmm, I'm not sure who the elite crowd are. However, I don't think I'm one of them.

Anyway, I thought the report was interesting. I was struck by how I couldn't see the same thing happening to a non-GUE UK technical diver. The mindset was completely different. I would much rather dive with a decent buddy than solo, but even then, the idea that someone else is controlling my deco and my ascent rate is completely alien to me. If I was diving with someone, especially someone I didn't know, and they started going up too fast, I wouldn't go with them. Absolutely no way.

That said, 9m/min isn't fast. I know people trained a few years back that used to punch it up from depth at 20m/min. PADI standard ascent rate is still 18m/min.

Jason

[broady]

I'd still like to know what the difference in ascent rates is between Tech 1 and Tech 2 divers and whether this is something that all GUE divers are aware of and routinely discuss during the diveplan.

Also why wasn't the drysuit dumping on ascent - was there a fault with the valve or was is likely something to do with a horizontally trimmed ascent not allowing the dump to work efficiently?

G

.

[gobfish1]

what has a leaky suit and a crap computer got to do with this dive .. sfa .

admit you make a fuck up and stop with the, it ant my falt ,,

it was, it is, it will always be , a fuck up .. happy you're ok but dont pull the ,
it ant me diving its me kit crap ,,

[GLOC]

Originally Posted by broady

I'd still like to know what the difference in ascent rates is between Tech 1 and Tech 2 divers and whether this is something that all GUE divers are aware of and routinely discuss during the diveplan.

Also why wasn't the drysuit dumping on ascent - was there a fault with the valve or was is likely something to do with a horizontally trimmed ascent not allowing the dump to work efficiently?

G

.

There isn't a difference between ascents rates in T1 and T2 (9m/min to 80%, between 80% and 65% ATA depends on exposure but could be as high as 6m/min, the 65% to switch is 3m/min). However, the importance of getting moving in T2 is greater as a 'slow' ascent rate at T1 level won't have that much of an impact on deco at the 45m/30min 1:1 baseline but at T2 where at 66m it becomes 2:1, any extension in bottom time (which could be read of as a 'slow' ascent) will have a more marked effect on the deco requirement.

Horizontal trim does allow the dump valve to work properly but admittedly once you have air in your feet it is much harder to get rid of it if you are horizontal. However, if you are under control (which Mark clearly wasn't) then it isn't an issue.

[nickb]

Originally Posted by GLOC

...once you have air in your feet it is much harder to get rid of it if you are horizontal.

I know you guys prefer Turbo Soles, but with a good-fitting pair of Rock Boots this can't happen. I thought about switching to Turbo Soles when my suit went to Hydrotech over the New Year but the chap there strongly advised against it.

You fellas pride yourselves on always having good trim but I can't help thinking that this must lead to some peer-pressure to always look good, when a quick change to a more vertical posture would have nipped this problem in the bud early.