deco

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noob2

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hi i was wondering that if a diver dives in 8 feet of water for a very long time would you need to do any deco
 
noob2:
hi i was wondering that if a diver dives in 8 feet of water for a very long time would you need to do any deco

08_______10,000___10,000

05_______20_______10,020 (gas switch)

04_______40_______10,060

02_______120______10,180 (o2)

Surface

Or, you could use ratio deco.

(kidding, of course)
 
at 35 feet (the shallowest depth on the PADI table) you have 205 minutes of no-decompression diving (so-called no deco divign ... but that's another issue)

by that table, you would start incurring deco obligation at that point ...
 
Sure, but if you use the hose, wear goggles and exhale through you nose so you aren't just re-breathing the same stale air over and over until you black out.
 
Good luck with that garden hose, it won't work. Too much water pressure to expand your lungs.

Jeesh, weren't you guys ever 8 YOs in the backyard pool? I thought everyone had to try and fail at this exercise. :D
 
I thought the heading was, "Technical Diving Specialties." Isn't this something for the "wannabe diver's" section?
 
Well even at 30' for 166 hours V-Planner say you still don't need no stinkin deco so I would think you are good for a few weeks at 8' :)
 
J.S. Haldane worked on decompression for sandhogs -- guys working long hours doing contruction of things like bridge piers in pressurized caissons. He came to the conclusion that a 2 to 1 ratio was safe for saturation exposures. In other words, one could go to 33' for any length of time and then ascend directly to the surface.

33' is is now considered overly agressive. Most modern decompression models will allow you to saturate (stay for days) and then ascend directly to sea level from around 20' to 25', depending upon the model.

8' is nowhere near these limits and I would have no qualms about staying at 8' for a couple of days, and then ascending.

If you are really paranoid, you could always use nitrox. Use EAN36, for example, and your partial pressure of nitrogen would be the same as being at sea level.

Charlie Allen
 

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