24 Hours underwater

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diversjobs

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I'm trying to achieve in my local community a charity event, where I will be 24 hours underwater.
The idea is to be nin a aquarium tank, 4 meters depth for 24 hours.

It has been difficult to calculate the risks of this idea.

My idea was
doing 6 hours with 30 minutes break and in the last 6 hours have a high mix of nitrox and potentialy pure o2 in the last hour.

Any advice from tec divers out there or experts?

Thanks.
 
Contact Lynnhaven Dive Center (www.ldcscuba.com). They do a "Dive for a Cure" 24 marathon every year to benefit breast cancer in their pool.
 
Don't use O2. Calculate the OTUs that you would accumulate to determine the best mix. I suspect it would be better to use air.
 
diversjobs:
I'm trying to achieve in my local community a charity event, where I will be 24 hours underwater.
The idea is to be nin a aquarium tank, 4 meters depth for 24 hours.

It has been difficult to calculate the risks of this idea.

My idea was
doing 6 hours with 30 minutes break and in the last 6 hours have a high mix of nitrox and potentialy pure o2 in the last hour.

Any advice from tec divers out there or experts?

Thanks.
Click to expand...
At four meters on air you should have no risk of DCS.
 
diversjobs:
It has been difficult to calculate the risks of this idea.
Click to expand...

The dreaded Pickle Skin could make you pretty funny to gawk at for a long time. DCS? I only play a doctor on the weekends with a variety of fun gals who look great in wet rubber suits, but in my professional opinion, no big deal as far as DCI, just the skin problem.

diversjobs:
Any advice from tec divers out there or experts?
Click to expand...

When you've accomplished it, you will have earned the title of Aquanaut. It's never gotten me to the front of the line at Starbucks, but it's fun to think about.

http://en.wikipedia.org/wiki/Aquanaut We can mince words later.
 
Are you planning to use a full face mask or a standard second stage regulator? I only ask because I think keeping a reg in your mouth that long may be tough --I'm sure others have done it, but I'm thinking of very tired, achy jaw muscles.

Jeff
 
A guy named Jerry Hall set some sort of diving endurance record, there is a story about it on Zeagle.com (he used their gear):
One unforgettable lesson that Jerry learned during his first record setting endurance dive, was that the funny "prune skin" effect that we all get when we are in the water for extended periods of time is not nearly so funny after about 30 hours. Jerry was in extreme pain for hours after his first record dive in 2002, due to the effects of the water on his hands and feet. This time he improved things tremendously by putting his hands in gloves filled with a special hand cream. He feet went into boots filled with the same cream.
Click to expand...
You might want to contact this guy to see if you can get a few pointers. ScottZeagle (on this board) may know how to get in touch with him.

John
 
jtoorish:
Are you planning to use a full face mask or a standard second stage regulator? I only ask because I think keeping a reg in your mouth that long may be tough --I'm sure others have done it, but I'm thinking of very tired, achy jaw muscles.

Jeff
Click to expand...

Cut the bite thingies off of a "long" mouthpice... the kind that goes a ways back to your molars (not the short ones you might find on a snorkel or an octo).

Bungee cord in a figure eight wrap around your head to hold it in.

Tether off and have a nice snooze. Tenders can monitor your air. Stuff your AI dive computer with the low air warning set... stuff this into your neoprene hood.

The cure for Pickle Skin? Best idead is to prevent it. Hydrate like mad and before beginning your dive, cover your skin with an acceptable formulation of waterproof grease- then pull your wetsuit on. Same deal with your hands and feet. use dishwashing gloves, and for the feet? Baggies and duct tape.

Necessity is a mother. I tell you all of this from youthful fundraising experience. Try it with a double hose and a 3/4" wetsuit. Yikes.

Have fun and good luck!
 
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