Anyone want to hand out some SCUBA diving advice?

Sleepy said:
Out of my group I'm the only one who'se not yet been bent. I've almost killed myself 3 times through stupidity. I used to teach club diving, but stopped over 10 years ago, now I only do the occaisonal tech course for friends.

What do you mean by bent, suffered nitrogen narcosis intoxication or actually come up too fast and suffered the consequnces and had to call for help?
 
cleanbluesky said:
What do you mean by bent, suffered nitrogen narcosis intoxication or actually come up too fast and suffered the consequnces and had to call for help?
Bent = Decompression sickness, blood flow bloackage caused by rapid ascent/improper deco/poor hydration/illness/bad luck. Narcossis is inherant in using any breathing mix which contains nitrogen and oxygen, as you've got to have the latter you'll always experience a degree of narcossis, but the former is controlled by using trimix when diving deep enough that using air/nitrox would cause a problem.
 
Sleepy said:
Bent = Decompression sickness, blood flow bloackage caused by rapid ascent/improper deco/poor hydration/illness/bad luck. Narcossis is inherant in using any breathing mix which contains nitrogen and oxygen, as you've got to have the latter you'll always experience a degree of narcossis, but the former is controlled by using trimix when diving deep enough that using air/nitrox would cause a problem.

What's the deepest you've been and what sort of equipment did you use?

Also, what would you consider the most dangerous kind of dive and what scenarios were you in where you almost died?
 
cleanbluesky said:
You can dive more than 20 meters... whats freediving>?

Free diving is going under with out any scooba gear.
The only air you get is the air in your longs :)
 
cleanbluesky said:
You can dive more than 20 meters... whats freediving>?

The only reason I can't do more than 19.5 that I have recorded is because I have to swim all the way to where I dive and back, but for a 20m dive I only need around 40seconds. Given I can hold my breath for close to 4minutes, even without much training and proper diet, I can do much more than 20 :D
 
cleanbluesky said:
What's the deepest you've been and what sort of equipment did you use?

Also, what would you consider the most dangerous kind of dive and what scenarios were you in where you almost died?
Twin 12's with 2 off 10Lt stages, as for depth my first stop was around 50m. Now I use 2 7Lt stages and a 3Lt bottle, for a better profile and more efficient gas usage.

All dives are dangerous, afterall just how well can you breathe under water without a ton of kit on your back. The name of the game is risk management, for some dives I carry 40Kgs of kit on my back alone, plus other gear hung from the front yet I don't regard those dives as dangerous cos I'm well trained and well equipped and with a group of like minded people and with a driver who we trust.

As to what I think is a dive too far is one that others would do without a worry. Cave diving comes to mind, going miles into a cave at 80m strikes me as lunacy as does 9 hours of deco of get out afterwards. Yet people I've dived with do that for fun.

The only relevant thing about my close encounters with the grim reaper was my own stupidity, all that really needs to be said is don't blow your training/comfort level without a great deal of thought/planning first.

For the more wierd screw ups I've made: I got lost in a wreck, spent a few minutes wondering why I couldn't fit through the hole I came in by (called keying) then I realised I was thinking in 2D not 3D. We'd actually entered by another hole further up the bulkhead. We'd fixated on one possible solution to the detriment of the real solution, narcossis and stress and inexperience casued that bad thinking.

On another dive with borrowed kit a contents gauge needle got stuck at 50 bar, I ended up breathing that cylinder empty which was a bit of a surprise at 45m. Though I did have a couple more to choose from so not a complete disaster. An embarresment for me that in other times has killed others.

Diving nr Plymouth spotted a circlular something buried in the sand. Circle = man made = tat = divers pride and joy. So picked it up. Unfortunately it was the buisness end of a shell. So put it down. Carefully.

Diving a small unknown in the channel in low viz head butted a depth charge. My buddy asked afterwards why I reacted so weirdly.
 
pyro said:
All this equipment and you can't do more than 20meters down :p Try freediving :cool:
I'm really bad at free diving, much deeper than 10m and I have to surface as soon as I reach depth. Give me a ton of gear and I'm much happier.
 
Sleepy said:
I'm really bad at free diving, much deeper than 10m and I have to surface as soon as I reach depth. Give me a ton of gear and I'm much happier.

I just find scuba really weird, then again I only did a course in a 3 meter pool :p It was fun and the fact that you can stay for hours (well..) down is pretty nice, but then equipment is expensive, I don't have any buddies in Greece that do dive, and if we have two or three of us to get together it's only gonna happen once a year :p

Whereas apnea is so simple, hold your breath and off you go!
 
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