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#130 - 02/01/01 07:33 AM What is the deepest that a diver is physically able to go?
Doorman Offline
new diver

Registered: 02/01/01
Posts: 2
Loc: Pittsburgh, PA, USA
A question came up in my science class today about the deepest that a human can go underwater. Does anybody know how far it is possible to go or a record of how deep someone went. This includes using special equipment, as long as it is not some kind of submarine. Thank you. The sooner the better!

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#131 - 02/01/01 09:20 AM Re: What is the deepest that a diver is physically able to go?
WaterBoy2 Offline
avid diver

Registered: 01/16/01
Posts: 13
Loc: Littleton, CO, US of A
I am not 100% positive but i believe that the absolute deepest a diver can go is around 430 feet. I am sorry if i am way off. Happy and safe diving!

Peace,
Ben


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#132 - 02/01/01 03:09 PM Re: What is the deepest that a diver is physically able to go?
Rebecca Offline
veteran

Registered: 11/06/00
Posts: 561
Recreational diving limit is 130ft. Although a lot of people will start feeling the effects of nitrogen narcosis around 100 feet. To go any deeper would require extensive training and equipment.
quote:
Originally posted by Doorman:
A question came up in my science class today about the deepest that a human can go underwater. Does anybody know how far it is possible to go or a record of how deep someone went. This includes using special equipment, as long as it is not some kind of submarine. Thank you. The sooner the better!


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#133 - 02/02/01 10:09 PM Re: What is the deepest that a diver is physically able to go?
sherman_02 Offline
just got here

Registered: 02/02/01
Posts: 1
Hi to all- I would just like to start out by saying I have never dived in my life, so you probably wonder what I am doing here. Well, had read an article about the deaths of Chris and Chrissy Rouse on a wreck dive in an article in National Geographic magazine. I later found the book that this article was based on by Bernie Chowdhury called The Last Dive, and have become very interested in this topic though i have absolutely no experience. Anyway, in the book Chowdhury writes that Sheck Exley holds the world deep-scuba-dive record of 867 ft, set in 1989, accomplished by strategic calculations in gas mixtures at different decompression levels along with extreme skill, though it doesn't seem like many divers venture at all close to this depth because of the danger.

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#134 - 02/07/01 01:37 PM Re: What is the deepest that a diver is physically able to go?
OneThreeSeven Offline
avid diver

Registered: 02/07/01
Posts: 7
quote:
Originally posted by Doorman:
A question came up in my science class today about the deepest that a human can go underwater. Does anybody know how far it is possible to go or a record of how deep someone went. This includes using special equipment, as long as it is not some kind of submarine. Thank you. The sooner the better!

The real answer is "All the way to the bottom." There is no physical limit. The real constraints are the mix you breath, and how much of it you have. Navy Experimental Dive Unit divers have been to 1000 feet using saturation techniques (diving out of a bell, etc).


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#135 - 02/20/01 04:09 PM Re: What is the deepest that a diver is physically able to go?
Mac8 Offline
veteran

Registered: 02/20/01
Posts: 46
OneThreeSeven are you retarded?! "All the way to the bottom" are you clinically brain dead? There limits to everything, especially diving. I tell you what brainic, I'll pay for a trip and all the scuab gear you need, and we'll take a little trip out to the Mariana Trench and you can dive it. And I tell you what, if you survive the experience, you can keep all the gear I buy. You freaking moron.

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#136 - 02/20/01 04:56 PM Re: What is the deepest that a diver is physically able to go?
Dave Offline
avid diver

Registered: 02/20/01
Posts: 12
Loc: Davis, CA, USA
What's with all this name calling? If you can't be mature and respect other peoples' views, maybe you shouldn't take part in these discussions.

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#137 - 02/24/01 12:29 AM Re: What is the deepest that a diver is physically able to go?
OneThreeSeven Offline
avid diver

Registered: 02/07/01
Posts: 7
[QUOTE]Originally posted by Mac8:
OneThreeSeven are you retarded?!

No, I just happen to know the guy thats been to 1000 feet on a rebreather. Come on up here and I'll introduce you.

So what's your excuse? Just get into that DM course?


"All the way to the bottom" are you clinically brain dead? There limits to everything, especially diving.

Right. Cause you're the expert. Like I said, come on up, and I'll introduce you. Then you can go back to selling snorkles to OW students for minimum wage.

You freaking moron.

My, what a punk.



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#138 - 02/26/01 10:00 AM Re: What is the deepest that a diver is physically able to go?
Reef Guy Offline
veteran

Registered: 11/29/00
Posts: 21
Loc: Puerto Rico
Well like Rebecca said, the limits for recreational diving is 130 ft. But note the key word here is "Recreational" Any type of diving beyond recreational is much more complex and involves different techniques,and not to mention skill.

If you want a recent example, take the divers that went down to investigate that russian Submarine that sunk, if am not mistaken those divers went down over 500 meters, but with the help of a submarine.

Strait to the decompretion chamber they went!


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#139 - 02/27/01 11:46 AM Re: What is the deepest that a diver is physically able to go?
Colin Offline
just got here

Registered: 02/27/01
Posts: 1
Doorman,

As your question relates to scuba diving, the deepest that a human has been while diving scuba is roughly 925 feet. The "world record" is considered to be a tie between Jim Bowden (Zacaton, 925f) and Nuno Gomez (Boesmansgat, 282m). Sheck Exley was diving with Jim Bowden on that same dive at Zacaton, but did not survive.

Commercial and military diving endeavors have placed humans considerably deeper than 925 feet, but these dives have been through the use of considerable surface support, and the divers were not using traditional scuba.

Good luck with school.



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#140 - 03/02/01 02:32 PM Re: What is the deepest that a diver is physically able to go?
Amy Offline
new diver

Registered: 03/02/01
Posts: 3
Loc: London ON, Canada
hey OneThreeSeven I'm just curious what your diving experience is? DO you use mixed gases when you dive?

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#141 - 03/03/01 11:10 AM Re: What is the deepest that a diver is physically able to go?
mrmrezg Offline
avid diver

Registered: 03/03/01
Posts: 6
Loc: rayne, la
just for the record with enough lead any one can go all the way to the bottom (he may not come up)but he can reach the bottom.

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#142 - 03/04/01 07:50 PM Re: What is the deepest that a diver is physically able to go?
SGHOWE Offline
veteran

Registered: 03/04/01
Posts: 81
Loc: Ashton, Maryland, USA
Onethreeseven, Unfortunatley someone being able to dive to 1000 feet on a rebreather, or any other apparatus for that matter, does not support your claim of being able to go all the way to the bottom. The AVERAGE depth of the ocean is over 10,000 feet and the real bottom is at about 37,000 feet. There is NO gas mixture that has been used that can take humans to that depth and sustain life. (these depths have been reached by humans in submarines, but that is irrelevant to the issue at hand.) The deepest dives preformed under pressure by humans have been in the 2000 foot range and even these are extrememly rare and dangerous. Despite this they in reality only barely scratch the surface of the ocean. Human beings are land based organisms, and while we will continue to push the envelope of our physiological tolerances it is highly unlikely that humans will ever even reach the average depth of the ocean unprotected by one atomosphere submersible of one kind or another. The claim that there are no physiological limitations limiting the depth that humans can venture underwater is not true. There are countless physiological limitations that affect humans EVERY time we enter the water, no matter what the depth.
Best Wishes,
Sean

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#143 - 03/14/01 10:40 PM Re: What is the deepest that a diver is physically able to go?
DW Offline
new diver

Registered: 03/14/01
Posts: 2
Loc: Seattle, WA, US
Limited by Oxygen partial pressure @ 2 atmospheres absolute. Oxygen beyond this pressure in the system becomes toxic and can cause an O2 "hit". If you keep the O2 at a 16 percent minimum in the mix you can go to whatever depth you can decompress from (depends on inert gas in mix, availability of decompression facilities, PTC etc.)

To dive on air past 190' SW is asking to die. Does this answer your question?

Dan Walker


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#144 - 03/15/01 06:15 AM Re: What is the deepest that a diver is physically able to go?
SGHOWE Offline
veteran

Registered: 03/04/01
Posts: 81
Loc: Ashton, Maryland, USA
Actually Dan, a mix with 16 %o2 is limited by a depth of 297 fsw. That is calculated using the reccommended maximum ppo2 of 1.6. I personally never exceed a 1.4ppo2 to give myself an extra margin of safety.
Best Wishes
Sean

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#145 - 03/17/01 06:22 AM Re: What is the deepest that a diver is physically able to go?
sub88 Offline
new diver

Registered: 03/17/01
Posts: 2
Loc: Summerville, SC USA
quote:
Originally posted by SGHOWE:
Actually Dan, a mix with 16 %o2 is limited by a depth of 297 fsw. That is calculated using the reccommended maximum ppo2 of 1.6. I personally never exceed a 1.4ppo2 to give myself an extra margin of safety.
Best Wishes
Sean

That is what I've been taught as well. The limiting factor is definately the ppo2. Although the guy instructing me routinely uses 1.5 ppo2. At some point He2 becomes narcotic as well although the number escapes me right now


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#146 - 03/23/01 02:37 PM Re: What is the deepest that a diver is physically able to go?
scubapro Offline
avid diver

Registered: 03/23/01
Posts: 6
Loc: Baltimore, MD, 21227
Such hostility here.. Anyway.. Ask Dr. Jim Bowden.. He might be able to tell you how far a human can go down..

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#7862 - 07/08/10 03:50 PM Re: What is the deepest that a diver is physically [Re: scubapro]
Harry_P Offline
just got here

Registered: 07/08/10
Posts: 1
This might help in this topic.
[url=http://en.wikipedia.org/wiki/Deep_diving#Ultra-deep_diving]Wiki[/url]

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#7863 - 07/09/10 03:27 PM Re: What is the deepest that a diver is physically [Re: Harry_P]
BobG Offline
veteran

Registered: 06/18/05
Posts: 424
Loc: Irvine, CA
Thanks for the link, Harry!

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#7887 - 08/16/10 01:57 AM Re: What is the deepest that a diver is physically able to go? [Re: Mac8]
gondown Offline
new diver

Registered: 08/16/10
Posts: 3
Well get out your cridet card and put yur money where you mouth is. will do this dive any time you like in any place you would like me to do it for some nice new gear.

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#7888 - 08/16/10 01:58 AM Re: What is the deepest that a diver is physically able to go? [Re: gondown]
gondown Offline
new diver

Registered: 08/16/10
Posts: 3
[quote=gondown]Well get out your cridet card and put yur money where you mouth is. will do this dive any time you like in any place you would like me to do it for some nice new gear. [/quote]

to: ( mac8 )

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#7889 - 08/16/10 02:05 AM Re: What is the deepest that a diver is physically able to go? [Re: Doorman]
gondown Offline
new diver

Registered: 08/16/10
Posts: 3
[quote=Doorman]A question came up in my science class today about the deepest that a human can go underwater. Does anybody know how far it is possible to go or a record of how deep someone went. This includes using special equipment, as long as it is not some kind of submarine. Thank you. The sooner the better! [/quote]
Recreational diving limit is 100ft not 130ft on a 20% mix witch is what we now breath 20% o2 79% nitrogen and 1% other! Anything over that would be a Nitrox Mix or a trimix witch uses healium.

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#7893 - 08/17/10 09:27 AM Re: What is the deepest that a diver is physically able to go? [Re: gondown]
BobG Offline
veteran

Registered: 06/18/05
Posts: 424
Loc: Irvine, CA
According to the Recreational Scuba Training Council, the absolute limit for recreational scuba divers is 130 ft. 100ft is the "recommended" limit for recreational divers.

The current World Record deep dive using open circuit scuba equipment is 1083ft set by Pascal Benabe.

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#7961 - 11/18/10 06:47 PM Re: What is the deepest that a diver is physically able to go? [Re: BobG]
michaelspar Offline
new diver

Registered: 11/18/10
Posts: 2
"According to the Recreational Scuba Training Council, the absolute limit for recreational scuba divers is 130 ft. 100ft is the "recommended" limit for recreational divers."

Recreational diving limit is 130ft. Although a lot of people will start feeling the effects of nitrogen narcosis around 100 feet. To go any deeper would require extensive training and equipment.

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#7963 - 11/20/10 10:11 AM Re: What is the deepest that a diver is physically able to go? [Re: michaelspar]
BobG Offline
veteran

Registered: 06/18/05
Posts: 424
Loc: Irvine, CA
Yes, but the original question was "What is the deepest that a diver is physically able to go?"

Narcosis is very subjective. It can be felt one day and not the next, by one diver in the group, but no other. A diver can go for many, many years and not fall subject to it then one day suffer an extreme case of it. Scientists have been trying to unravel its secret for many years.

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#7966 - 11/24/10 07:26 PM Re: What is the deepest that a diver is physically able to go? [Re: BobG]
michaelspar Offline
new diver

Registered: 11/18/10
Posts: 2
[quote=BobG]Yes, but the original question was "What is the deepest that a diver is physically able to go?"

Narcosis is very subjective. It can be felt one day and not the next, by one diver in the group, but no other. A diver can go for many, many years and not fall subject to it then one day suffer an extreme case of it. Scientists have been trying to unravel its secret for many years. [/quote]

Ohh really huh, thanks by the way.

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#7967 - 11/26/10 10:49 AM Re: What is the deepest that a diver is physically able to go? [Re: michaelspar]
BobG Offline
veteran

Registered: 06/18/05
Posts: 424
Loc: Irvine, CA
No problem! Have a great day!

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#8025 - 03/24/11 01:17 PM Re: What is the deepest that a diver is physically able to go? [Re: Colin]
shownoob Offline
new diver

Registered: 03/24/11
Posts: 2
Ok yes !!

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#8040 - 04/27/11 10:53 PM Re: What is the deepest that a diver is physically able to go? [Re: Colin]
Pipat2 Offline
just got here

Registered: 04/27/11
Posts: 1
Thank for the info
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#8049 - 05/24/11 08:45 PM Re: What is the deepest that a diver is physically able to go? [Re: Colin]
pipat3 Offline
just got here

Registered: 05/24/11
Posts: 1
Thank for the info
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