Does anyone dive below <span title="[e-mail]?">300feet.timdawg712000@yah...</span>

Question

Does anyone dive below 300feet.timdawg712000@yah...

Answer 1

Yes, commercial oilfield divers regularly work at that depth and deeper. It has become fashionable for amatuer scuba divers to exceed 300&#039; also, though the equipment and minimal back-up they have make this a risky enterprise.

Right now, as you read this there will be an oilfield diver working offshore Brazil in 1,400... yes 1,400 feet of water!

Answer 2

Yes - approximate depth boundaries are:

for SCUBA diving:

0 - 30m (100ft)

Normal limit for sport (non-decompression) diving

30 - 50m (160ft)

Maximum practical limit for air diving, usually decompressing on rich (50-100% O2) nitrox mixtures (NB 60m/200ft is possible on air, but the N2-narcotic effect is fairly extreme - greater depths raise the risk of O2 toxicity unacceptably high)

50 - 250m (800ft)

&quot;Mixed-gas&quot; (i.e. trimix, heliox, rich nitrox) territory - lots of tanks and complicated planning if diving open circuit SCUBA, even more so if diving closed circuit SCUBA (rebreathers)

Supplied gas diving:

For practical purposes, only commercial and military divers on umbilical gas lines (usually from a diving bell) can dive deeper than about 250m (800ft), as the decompression penalty for this kind of &quot;saturation&quot; diving is usually more than 24 hours (i.e. it&#039;s not possible to carry sufficient gas supplies for SCUBA diving, never mind the risk of hypothermia from the exposure)

Answer 3

Anything below 150 feet is strictly technical diving - if you want reasonable chances for survival. As far as being fashionable diving to 300 feet on air - a guy from Italy did this while I was in Roatan - for his birthday (20 something). They got him to the decompression chamber and had him on life support for a day or so but whereas he was not &quot;technically&quot; dead, for all intents and purposes he was dead - the nerve damage is not recoverable. Nerve damage does not reverse itself. They flew him out so he did not &quot;technically&quot; die there.