| Archive for SUSAC forum Stirling University Sub-Aqua Club |
| cheeky_diver |
perfect profile?The perfect dive trip??
I just came out from this dive just over an hour ago. Will write a full blog once I have finished fizzzzelling!! ck |
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| gus |
were you in the pot, or a sub, or did your computer do that dive all on its own, from a fishing rod.
thats one tip top profile, that stop at three seems almost too good, wait a second did you draw that graph all by yourself on excel. sorry for the disbelief, i do believe it really. i hope the dive was as fun as the profile looks pretty. was that a wreck at 36/7. i hope you arent disciplined enough for that to be a shore dive. Looking forward to hearing about it. happy fizzing cheers |
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| gus |
just had a look for my interest,
for that dive, assuming it you were residual nitrogen free,( 42meters, 12mins bottom time) scotsac buhlmann tables say 4mins at 3 meters, you seem to have done 21 mins of hanging. 17 extra? but if you are on the vit c then you can never be too careful. cheers |
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| cheeky_diver |
Ah, so many questions young grasshopper!
All will be revealed soon enough. P.S I couldn't do a graph like that on excel. 
The guy in the red had seems intrigued too!! [/img] |
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| Sarah |
Cheeky I always thought your profile was perfect! 
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| cheeky_diver |
10 points for GusWell Gus you were right the first time.Today I took part in a 40m pot (chamber) dive at my research centre. My excuse was that, as I am recruiting volunteer divers to undergo simple mental performance tests (insert your own joke here!) at silly deep depths; It was absolutely necessary for me to share their experience. Well, they fell for it...... One of the jobs of the research centre is to train divers to Advanced Medic Technician levels so that they can deal with emergencies when they are in remote areas. Part of the Medics training is to experience a deep pot dive.....Anyhoo, I blagged a space in the chamber. I posted ages ago http://susac.myfreeforum.org/about381.html regarding what chambers are, and bored you all with my first chamber dive experience. Now compare the earlier (Dive Blogs> chamber dive!) printed computer profile with the one at the top of this thread. Tad different eh? Today's dive was just about as fast a descent as the chamber will allow; 20m/min. So there I was, sat in the nice comfy aircraft style seats; 70 seconds from start and I'm whizzing past the 30m mark! and 50 seconds later I'm experiencing a simulated depth of 40m. Bang. Nitrogen Narcosis hits you like a steam train! I was completely out of my box! (That's a technical term, I don't expect you to understand! (sorry, they do call me cheeky for a reason!)). Below I have attempted to copy the actual dive chamber operators log. This is a minute-by-minute, blow-by-blow account of what he did on the outside. Hopefully it's clearish to you. Being the good little teacher that I am, I've highlighted some (hopefully!) interesting facts and figures..... 
From the top: Blue circle shows the dive table that was used, unlike ScotSAC buhlmann tables, the research centre use DCIEM (canadian military) tables. These are deemed 'safer' for chamber dives, hence the safety stops at 9m, 6m and 3m. Green circle shows 40m depth achieved in 2mins (equalising your ears is best done by gulping air, pinch and blow, gulping air, pinch and blow, etc etc about every 3seconds! not easy... Red circle is best number on the dive log. This is the temperature inside the chamber. 43.1 degrees. That's 110 fahrenheit folks!! literally boiling, you could've fried an egg on the balding patch on my head!!! Yellow box shows that from 6m to the 3m stop then to the surface we all breathed 100% oxygen (13 mins) this is an added safety factor to reduce nitrogen build up, extreme safety. So what did we do for 7 or 8mins at 40m? ?.... mainly giggled. I was briefed by the chamber attendant beforehand (dude inside with us checking we're all ok, who happens to be a fire brigade superintendant) to try and say something funny to break the ice and induce narcotic giggles..... ..... Cheeky said (with a very squeaky helium like voice) "Hey guys, how many firemen does it take to screw in a lightbulb?" (lots of confused faces all round) "16, ... 1 to hold the bulb and 15 to turn the ladder!" maybe not the worlds best joke, but the chamber erupted with uncontrollable laughter! The perfect dive? Oh yeah. Any questions? Please ask, I love talking about my chambers now. It's my own opinion that all dive organisations should teach chamber awareness; about 'bends' and how to fix em, and hammer home the message that 8 out of 10 times it's never due to diver error.......Then maybe all us divers will realise that it's a fact of diving and not something akin to venerial disease. (Hiya Scotty!) Here endeth the lesson, dive safely and remember what the fictional Scotty said "Ye cannae change the laws of physics" ck |
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| joe |
thats really crazy!
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| cheeky_diver |
Hey Joe,
define "crazy" 
So far over the next 3 weeks I have around 18 volunteer sport divers (yes, some of them are Padi open water (limited by padi to 18m)) coming in to do something quite similar for my research. Crazy = cool, yeah?? Come on, you know you want to do it! If Smaxwell, Simple, Nedboy and yourself (sorry, don't know you well enough to give you an offensive name (yet) had come down to the South West you'd have done it too!!!!! 
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| joe |
yea i'd be up for a chamber dive. But 40m in a matter of seconds thats crazy. Crazy can be very cool! 
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| cheeky_diver |
Think yourself lucky, our hyperbaric doctors have to be able to do 30m in one minute, they get regular training to ensure they are still able to do it!! . One of them (when working for the Royal Navy) had to treat a RN diver on a 90m dive, and she got there in under two mins! over 48 (?) m/min.
It doesn't take anyone superhuman to do it, in the chamber it is a totally different sensation than when you need to equalise on an open water dive, so you get told how to best clear your ears. In the water if your ears are sticky, all we divers do is; stop going down, pop up a wee bit, wait till offending ear goes pooop, slowly descend again, clear as normal then look at pretty hermit crabs and poke congers. Problem in the chamber is there is someone outside controlling the descent rate, if you have to stop him more than once, they literally chuck you out! You 'eat' into the bottom time of the dive. Thus incurring more decompression stops on the way back up! I'm rambling again. How did freshers fair go? get many signed up? Who drew the short straw and dressed up in full kit?? G |
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| gus |
so, the cheeky phd enters its experimentation stage, good luck with it all.
you ramble, but dont divulge, is there a better way to clear your ears? if i'm blocked up can i still do a chamber dive? when my 'u'stations are clear i recon i could cope with the decent at 50meters a minute, not the rapture however. it must get super duper warm too. i would like to try one of these deep, sitting up, narcosis inducing chamber dives, let me know if you need more people to do your experiment, i'm sure your funding would stretch to my travel expenses. my main doubt as to why your profile was not a chamber dive is that the 9 meter stop was a bit less accurate, i suppose there is a fair bit of gas laws to be thinking about to get the depth stable though. cheers |
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| joe |
if the travel expenses can cope i'll come to! AH the freshers fair was good, i was the idiot in the kit. Great fun! About 50 people signed up and then 12 turned up to the first meeting. Novel use of the projector to display my power point presentation.
Newbies in the pool for swim tests tonight. Before the try dives, intresting way of doing things. Cheers |
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| prydain55 |
I wonder if your funding would stretch to my travel expenses. Probably not. Subsidy? 
Max |
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| cheeky_diver |
funding? what funding!?Guys, I wish my funding did stretch as far as Stirling,I can't even claim back the petrol it takes me to get the 7 miles to the research chamber! Also, I can't even pay the participants that come from Plymouth to do my dives. Due to the fact that you have to sign a self-declaration medical form it was deemed possible by the Ethics committee at Uni that people might lie on the form just for the £6/hour that they would have got paid. Imagine this situation: Diver reads medical self-declaration form "Do you suffer from dizziness or blackouts?" or "Have you ever had a collapsed lung?" Are they really likely to lie about these just for £6? erm, no would be my guess. This is the Ethics committee that took 8 months to approve my study, despite the HSE (Government TOP diving at work advisor) telling them the study was safe. This is the same HSE guy who allows saturation divers to work 200m below a North Sea oil platform with an oxygen welding torch! While I'm ranting here's an excerpt from the "Ethics commitee v's Graham" meeting. Chairman (PROFESSOR Chris Someoneorother) Head of Computational Neuroscience, whatever that is?! A very intelligent man (on paper). Graham and HSE guy (specialist in "hazardous installation diving" etc etc) Chair: Now I don't know much about scuba diving , so for the purposes of this meeting I Googled "Scuba diving" and "Risks" G/HSE: [look at each other and give wry smile] Ok Chair: Now, under the ethics form section 'physical risks to participants' you fail to mention any possible risks to volunteers with regard to marine animals. G: Sorry Chris, what did you say? Chair: Well, as I understand it, scuba divers are exposed to risks from marine animals, in particular I read an article on jellyfish stings, not to mention other poisonous animals G: Erm (sharp intake of breath) Chair: We have discussed this at length (there were 12 of them v's me and HSE) and it is the opinion of thie committee that this is not just a slight oversight on your part, but a blatent attempt to try and sneak your study passed the committee. G: Are you being serious? (My supervisor (head of school of Psychology GLARED at me) Chris, just exactly how and why do you thing I'm going to put a jellyfish in a bleeding dive chamber while my participants are filling out paper and pencil questionnaires???!!! (rather sarcastically now) The research centre is 8 miles away from the nearest bit of saltwater! (at this point HSE guy kicked my shin under the table) Chair: Erm, so....you're not doing this study in the sea then? G: Noooo, the Hyperbaric Medical Centre is about 50 yards from Devon's main A&E hospital, not at the bottom of the sea....... Chair: The committee will now adjourn for a quick meeting, Graham please leave the room. 2 mins later....study approved! How frustrating?!? They had spent months deciding whether I was lying to them, not mentioning possible shark attacks, tsunamis, giant killer octopusses etc etc........The thing that really peeved me off is that the entire committee were invited to the research centre to observe a 'dive'. One of the dive's where we put seriously ill elderly NHS patients into the chamber, give them 100% O2 at depth and 'cure' their debilitating conditions!! No wonder they didn't accept the invitation, none of them wanted to get saltwater on their gucci loafers!!! Sorry, I still can't get over that meeting. Someone once said to me "Academic excellence is inversely proportionate to common sense" Never a truer word said. In answer to your original question! (what was the original question, before I went off on one?) Oh yeah, get a club trip down here (funded by the sports union!? do some nice South West open water dives, then I'll pop you in the chamber to do my study...? I'll check ebay for flights this afternoon!! |
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| prydain55 |
Shame. Seven miles is a bit less than 5000. Ah well. Shall have to find another way. Swimming perhaps?
Max |
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| charlie |
Re: funding? what funding!?
I hear that you're an academic high-flyer now, cheeky... fits I guess 
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| cheeky_diver |
Touche, Dr Charles McGurk BVMS, MSc, PhD, MRCVS, (SSAC MD BI)
Did I miss any out??
British Hyperbollox Assocciation (Oban) abstract goes to my sooopervisor on Monday, it'll be sent to BHA Monday afternoon, if accepted (see no reason why not!) Funding application for FoxAll Vectra and 96 pack of pro-plus to follow. If plans go accordingly, I could be at my folks house, fully kitted! Sat Oct 27th. 28th to 31st is BHA dive jolly (gotta really wangle that one) conference is 1st Oct to 4th. Awfully funny quote from BHA webite "any delegates wishing to take part in the diving must have some dry-suit diving experience!" If we get a friday pool session in, and a safe shallow open water dive, can you sign me off for my SSAC dry-suit endorsment!? By end of this month I shall have joined local BSAC club (also renewing my SSAC, think I'm still a BI? as I last trained july 2006! (within 2 years right?) By joining BSAC I cross over as Dive Leader, max allowed depth 50m. Can someone explain to me how I am allowed/insured to have an extra 33ft of seawater above me by providing £27 and a signature?? I won't question my new BDO tho! My friend at the DDRC (ex-navy, ex-police, every qualification going (seriously, I'd never heard of some of the organisations!!) will be taking me through to First Class Diver (only cos it sounds good!) gotta collect those badges! G |
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| charlie |
sounds like fun 
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