I'm completely new to scuba, snorkeling, snuba etc. and need some
advice regarding snuba.
I'd be very interested in doing snuba, because I find it very
attractive to be able to dive a few meters below the surface without
having to do a scuba course, wearing the equipment etc.
However, some time ago I've read several postings in this and other
newsgroups that snuba can be quite dangerous for people without any
experience in scuba diving. The opinions seemed to be pretty mixed on
this question, though. Those who said it's dangerous argued that
inhaling compressed air at any depth, even if it's just a few meters
below the surface, is very dangerous for anyone who doesn't know how
to scuba, because if you ascend and don't exhale the air properly, the
air volume in your lungs will extend and can hurt your lungs very
seriously.
I've just spoken to a guy from snuba about this (more precisely, to
someone from a different company which produces a device very similar
to the snuba device). He said there's no risk at all, because when you
ascend, you're automatically exhaling unless you force the air to stay
in your body strongly.
More precisely, he said:
a) In the normal course, you will continue to breath in and out during
ascending and there won't be any problems.
b) In the event of an emergency, in most cases you won't have any air
in your lungs anyway because the lack of air is exactly the cause for
the emergency.
c) In the event of another kind of emergency, like panicking or so, he
said one will automatically breathe out the air unless you force the
air in very strongly. He said the air virtually "wants out of your
body" and will go out of your body, unless you push very hard to keep
it inside.
I remember posts saying the opposite regarding c), though. Someone
said that in an emergency, the body's natural reaction is to keep the
air in the lungs, which then would be very dangerous when you ascend.
What do you think? Any assistance very much appreciated.
Kind regards from Germany
Holger
>I've just spoken to a guy from snuba about this (more precisely, to
>someone from a different company which produces a device very similar
>to the snuba device). He said there's no risk at all, because when you
>ascend, you're automatically exhaling unless you force the air to stay
>in your body strongly.
Holger - he's a salesman. He lied. It's not hard at all to keep your
mouth closed as you ascend. This is why snuba represents essentially
the same risks as diving on scuba, but the instruction is generally
inferior by a high degree.
With decent training, you can probably eliminate for the most part the
risk of drowning. If air supply fails, you should be able to swim up
the 10-20' of line. The shallow depth also eliminates decompression illness.
But it definitely doesn't change the risks of lung expansion injuries,
either because you held your breath or have lung issues that trap air.
BTW, what is the appeal of snuba for you? Less gear? It is very nice
going in just in snorkel gear, I'll grant, but that leash would limit
your range. I might cover a quarter mile of terrain in a dive, sometimes
more, sometimes much less.
--
Jason O'Rourke www.jor.com
<snip>
R..
That's an understatement. It can kill you.
> I've just spoken to a guy from snuba about this (more precisely, to
> someone from a different company which produces a device very similar
> to the snuba device). He said there's no risk at all,
He's full of crap, and he has a vested interest in saying that.
> because when you
> ascend, you're automatically exhaling unless you force the air to stay
> in your body strongly.
No, you're not necessarily. Your inborn instinct when uderwater
is to hold your breath.
Especially when frightened or panicked.
> More precisely, he said:
> a) In the normal course, you will continue to breath in and out during
> ascending and there won't be any problems.
Most people do not do this naturally. Dive training gives them
time to learn this in a controlled environment.
> b) In the event of an emergency, in most cases you won't have any air
> in your lungs anyway because the lack of air is exactly the cause for
> the emergency.
Guess again. There are many types of emergencies. You could
have something frighten you, and your natural response would be
to bolt for the surface while holding your breath.
> c) In the event of another kind of emergency, like panicking or so, he
> said one will automatically breathe out the air unless you force the
> air in very strongly.
BULLSHIT!!!!!!!!!!! When panicking, you revert to instinct,
which is to hold your breath.
> He said the air virtually "wants out of your
> body" and will go out of your body, unless you push very hard to keep
> it inside.
Same again. There are NO pain receptors in your lungs.
> I remember posts saying the opposite regarding c), though. Someone
> said that in an emergency, the body's natural reaction is to keep the
> air in the lungs, which then would be very dangerous when you ascend.
BINGO!
> What do you think? Any assistance very much appreciated.
I think you need to sit down and realize that there is no such
thing as a free lunch.
You want to do something really neat - go underwater. To assume
that you can get this benefit without sacrificing the time and
effort to learn how to do it safely is just plain stupid. What
exactly is motivating you? What's the hardship in getting the
training?
Think about your gas supply floating on a small raft above you. You wear a
mask, fins, weight belt and a "harness" that holds a 20 ft hose that is
attached to the gas supply on the surface and your reg.
See http://www.snuba.com for a pic.
Jo
> <snip>
>
> R..
>
>
As for the poster's original question, I'd concur with Brian and Jason
on their estimations of the risk.
R..
"aquaseas33" <aquas...@REMOVEattbi.com> schreef in bericht
news:b8jr8.172299$Yv2.55479@rwcrnsc54...
I think you've got it!
They should have called it Doing It More Righter, or DIMR. You get to lose
the whole plate/wingie thingie and are ever so svelte in the water.
Probably need to carry a Spare Air though, in case you need to donate your
primary;-)
> As for the poster's original question, I'd concur with Brian and Jason
> on their estimations of the risk.
I would hate a 20 ft. tether, I would rather just snorkel. I watched a guy
in an Aquarium clean the tank glass wearing something like this- there's no
buoyancy control device and he was giving the fake coral a beating.
Jo
Phwaaaaahr! Sounds about right.
Just Say No!
I'm kind of partial to Doing It Mo Better... or better yet, Doing Underwater
Mo Better....DUMB.
-lance
"Limey Dave" <david...@NOworldCRAPnet.att.net> wrote in message news:<dFkr8.5657$Rw2.4...@bgtnsc05-news.ops.worldnet.att.net>...
many thanks for the quick and honest responses. If all this is
correct, which I believe, I'm wondering that such a device is still
for sale!! BTW, the company I was talking to which makes this
SNUBA-like device is http://www.deepsnorkeling.com.
As for my motivation to do deep snorkeling rather than scuba diving: I
am handicapped by a chronic illness and I wouldn't be able to do a
scuba course, otherwise I'd be more than happy to learn scuba diving.
I'm only able to do a bit of swimming, a bit of snorkeling and I
thought maybe something like snuba could allow me to go a few meters
below the surface. You may say that if my health doesn't allow me to
do a scuba course, then it'll be not wise to do deep snorkeling
anyway. You may be right.
Well, after reading your postings, I'll definitely stick with
snorkeling in any case.
Best regards
Holger
Holger - in the US, there a couple of organzations that focus on teaching
scuba to those with physical handicaps. If your limitations are just in
physical mobility, there may be options for you. If it's related to the
cardiopulmonary system, then you'd likely be best off avoiding compressed
air in any form.
>I
>am handicapped by a chronic illness and I wouldn't be able to do a
>scuba course, otherwise I'd be more than happy to learn scuba diving.
>I'm only able to do a bit of swimming, a bit of snorkeling and I
>thought maybe something like snuba could allow me to go a few meters
>below the surface.
Maybe it can. As should be pretty well established already, though, it
definitely carries most of the risks of scuba diving. How could the loctaion of
the tank possibly decrease the risk?
That said, depending on what your limitations are, perhaps you could take a
scuba class, learn the theory, do some of the pool work, and come away
reasonably prepared. If your limitations are related to carrying the tank, a
cooperative dive shop might be able to cover an entire scuba course using a
surface air supply.
Steve
The above can be construed as personal opinion in the absence of a reasonable
belief that it was intended as a statement of fact. Or it might just be to
generate discussion.
If it's not a lung condition then you might want to look at HSA which has a
multilevel certification course and has certified quads to dive. (With a bit
of help from their friends.)
>He said there's no risk at all, because when you
>ascend, you're automatically exhaling unless you force the air to stay
>in your body strongly.
If that's really what ypu were told, the guy is either a loia with no concern
about your safety, or knows virtually nothing about diving. The stuff below is
a bit closer to the truth.
>More precisely, he said:
>a) In the normal course, you will continue to breath in and out during
>ascending and there won't be any problems.
Yup. In the normal course of events everything will go just as it's supposed
to. Sometimes things don't go as planned.
>b) In the event of an emergency, in most cases you won't have any air
>in your lungs anyway because the lack of air is exactly the cause for
>the emergency.
Often true. If you have just exhaled and can't get another breath, there
probably isn't enough air in your lungs to cause damage ascending from about 20
feet. At least in theory. How much do you want to gamble on this?
>c) In the event of another kind of emergency, like panicking or so, he
>said one will automatically breathe out the air unless you force the
>air in very strongly. He said the air virtually "wants out of your
>body" and will go out of your body, unless you push very hard to keep
>it inside.
Absolute bullshit. Hyperventilating is one response during panic, but
breathholding is a very common reaction to stressful situations, and you may
not even realize you're doing it. The air definitely wants out of your body,
but your ability to not exhale greatly exceeds the ability of your lungs not to
rupture from the increased pressue of the expanding air. After it ruptures
your alveoli and gets into your bloodstream the air can't get out of your body,
so it expands in your blood vessels, probably causing an arterial gas embolism.
Fortunately, AGE doesn't always result in death or permanent neurological
dysfunction.
Dave.
LOL. The cup is half full, eh?
--
David Scarlett
dscarlett [AT] optushome [DOT] com [DOT] au
"Damn it, Kif, where's the little umbrella? That's what makes it a
scotch on the rocks!"
-Capt. Zapp Brannigann, Futurama
> Those who said it's dangerous argued that
> inhaling compressed air at any depth, even if it's just a few meters
> below the surface, is very dangerous for anyone who doesn't know how
> to scuba, because if you ascend and don't exhale the air properly, the
> air volume in your lungs will extend and can hurt your lungs very
> seriously.
Only if you consider fatal to be serious. Gas compressed by the pressure at
depth expands as that pressure is released. Freedivers, those who breath
air at the surface and dive with it, experience compression and expansion to
the original volume. No harm done. Those who breath gas at depth are
getting it in compressed form which will expand beyond the volume it was
when it was breathed in. Lungs are not all that sturdy. Parts or the lungs
themselves can rupture and that can lead to death, a rather unpleasant death
at that.
> I've just spoken to a guy from snuba about this (more precisely, to
> someone from a different company which produces a device very similar
> to the snuba device). He said there's no risk at all, because when you
> ascend, you're automatically exhaling unless you force the air to stay
> in your body strongly.
Tell it to those who have died.
> More precisely, he said:
> a) In the normal course, you will continue to breath in and out during
> ascending and there won't be any problems.
Guess what. Breathing underwater is not "normal". In the normal course,
you will hold your breath. This is part of what you learn not to do in
scuba training. Of course, you can learn the same thing in SNUBA training
if, in fact, there is some.
> b) In the event of an emergency, in most cases you won't have any air
> in your lungs anyway because the lack of air is exactly the cause for
> the emergency.
Maybe yes, maybe no. Would you consider being circled by a large shark to
be an emergency? How about a barracuda or moray? How about you encounter
one of the more toxic jellyfish?
> c) In the event of another kind of emergency, like panicking or so, he
> said one will automatically breathe out the air unless you force the
> air in very strongly. He said the air virtually "wants out of your
> body" and will go out of your body, unless you push very hard to keep
> it inside.
You're betting your life on what a salesman tells you about a product he
makes his living selling versus trusting information provided by divers,
most of whom have no financial interest in the question at all. It's your
life and I'm sure SNUBA can be done safely, but compressed gas in the lungs
is the same risk for SNUBA, the BOB self contained bubble scooter, scuba and
any other device that involves breathing gas that has been compressed.
Lee
Hey, if you guys ever need gas to inflate your BCD on the surface while I'm
still diving, you'll be damned glad for that long hose. 8^).
Lee
"Rob Turner" <robert.tu...@cgey.nl> wrote in message
news:a8kabq$stu4h$1...@ID-134232.news.dfncis.de...
>
Dave.
Gordon in Austin
Banny Thorne
Never Enough Charters
www.thefloridakeys.com/captbanny
>> Fortunately, AGE doesn't always result in death or permanent
>> neurological dysfunction.
>
>LOL. The cup is half full, eh?
>
Why rely on cliched hyperbole when subtle understatement will do? I figure for
anyone with a brain, that should make my point.
They ARE different.
Check out;
Safe Diving.
L8R
Paul Schilter wrote:
--
What's all the fuss about? Come on and see for your self. You MIGHT Like it!
Server: irc.rec-scuba.com Port: 6666
http://www.rec-scuba.com/index.php
You Don't HAVE to be NUTS to be a SysAdmin/WebMaster. BUT it Helps!
"Jack Farmer" <ja...@mail.thecrusaderbbs.com> wrote in message
news:3CB00635...@mail.thecrusaderbbs.com...
> > Hey, if you guys ever need gas to inflate your BCD on the surface while
> > I'm still diving, you'll be damned glad for that long hose. 8^).
> ...send it up on a lift bag?
Yep. That's what those great big Halcyon safety sausages with the pressure
releaf valves are for . . . I think.
Lee
I guess SNUBA is not as well known as originally thought. This is from the
SNUBA International website.
Snuba divers breathe underwater by means of a 20 foot air line which is
connected to a standard scuba tank. The tank is mounted on a raft on the
surface that follows your every movement. The airline allows you to tour
underwater near the bottom, at mid-water or on the surface depending on your
level of comfort. There is no heavy diving gear. Every Snuba tour is guided
by a diving professional. Your guide will familiarize you with the Snuba
equipment you will be using and briefly describe what you can expect in the
water.
Assuming this is the definitive site for SNUBA, it's not surface compressor
supplied diving, what most of us refer to as hooka diving.
Lee
SASSY with no BCD straps, and a DIR long hose.
What exactly is your handicap and illness?
> I'm only able to do a bit of swimming, a bit of snorkeling
Then you should be able to complete a SCUBA course.
> You may say that if my health doesn't allow me to
> do a scuba course, then it'll be not wise to do deep snorkeling
> anyway.
ABSOLUTELY! Given the state of SCUBA training, any physical
limitation that would
not enable you to earn an Open Water SCUbA certification would
constitute a contraindication to diving.
Dave.
I was talking to JJ today (he's so patient :-), and I asked about a 50lb lift
bag. We talked about the differences between a sausage and bag, and he said
he'd give some thought to it (a 50# bag).
Popeye
His Imperial Majesty
Team 3
Popeye wrote:
>
> I was talking to JJ today (he's so patient :-), and I asked about a 50lb lift
> bag. We talked about the differences between a sausage and bag, and he said
> he'd give some thought to it (a 50# bag).
While yer waiting for him to think about it, you can buy one from
Carter.
But...But...But... I wanted a closed bag. I have a #50 Dive-Rite.
You hang. I drift. I may pull a bag 1.5 miles with the current. The line
continually slacks, and the bag may be in 3-5s. If it dumps, I'm dragging it
down the reef.
I did notice the triangular shape (it's not the first time ESG has
recommended them), but I think a closed bag would be better for what I need. I
don't think the sausage would work for the same reason. It'd never be upright.
Plus I'd rather have orange than yellow. I think they stand out better on a
bright day.
>OK, you don't need a Carter, you need a freediver's torpedo float. You
>should be able to find them in FL. If you can't, email me. Dan V can
>probably tell you where to go in SoFL.
>
>http://www.clickandbuild.com/cnb/shop/freediver?listPos=&op=catalogue-
>products-null&prodCategoryID=12
>
>You're right about orange being easier to see, and the Carters work
>because they sit low in the water, also not good for what you do.
>
>al
>
>
Thanks! I'll check 'em out.
Dan's told me where to go many times. :-)
"Al Wells" <fossi...@mindspring.com> wrote in message
news:MPG.171b431fe...@nntp.mindspring.com...
> In article <20020408000023...@mb-ms.aol.com>,
> buzcu...@aol.comByte-me says...
> > You hang. I drift. I may pull a bag 1.5 miles with the current. The
line
> > continually slacks, and the bag may be in 3-5s. If it dumps, I'm
dragging it
> > down the reef.
> >
> > I did notice the triangular shape (it's not the first time ESG has
> > recommended them), but I think a closed bag would be better for what I
need. I
> > don't think the sausage would work for the same reason. It'd never be
upright.
> > Plus I'd rather have orange than yellow. I think they stand out better
on a
> > bright day.
>
Regards,
Dan
"Dan Volker" <d...@sfdj.com> wrote in message
news:RPms8.21192$VM5.8...@e3500-atl1.usenetserver.com...
Hey, that thing looks like the cat's ass. But. Will it roll and stow like a
lift bag? (no flag needed) How do you inflate it at depth? Can the three pound
weight be removed?
Popeye wrote:
>
> Hey, that thing looks like the cat's ass. But. Will it roll and stow like a
> lift bag? (no flag needed) How do you inflate it at depth? Can the three pound
> weight be removed?
Find a fresh road-kill possum. Throw it in the trunk. By the time you
get to the dive site, it will be fully inflated, works like a torpedo
float but cheaper.
You can use it with no flag.
You can stuff it in a Halcyon pocket, or roll it.
It has an auto purge ( according to the web page---I have never tried to
take one of these underwater), but this should be simple to confirm, and if
so, it would be easy to send up from depth.
The three pound weight......I don't recall. Probably modular so I'd expect
yes. Call them. Julie Riffe would be your kind of girl :-)...
http://www.speargun.com/julie.html
Regards,
Dan V
>In article <3CB22EF9...@worldnet.att.net>, omg...@worldnet.att.net
>says...
>
>> Find a fresh road-kill possum. Throw it in the trunk. By the time you
>> get to the dive site, it will be fully inflated, works like a torpedo
>> float but cheaper.
>
>On the outside chance that Popeye doesn't know how to tell if it is
>fresh, here's what you do. On your way to the still, stop at every dead
>possum and use a piece of chalk to draw a circle around it. On your way
>home, just grab the first one you see with no circle.
LMAOOOOOOOO !! You guys are too much !!!
About 8 years ago, the neighbor's dog got hit by a car. Right on a street
corner (once again, Boogertown road). The neighbor left him in the road for
about 5 days.
After fully inflating, I tipped him up on his four extended legs, and stuck a
huge cigar in his mouth.
The neighbor got him the next day.
Call them. Julie Riffe would be your kind of girl :-)...
>http://www.speargun.com/julie.html
>
>Regards,
>Dan V
>
>
Good lord! Is she holding that fish up, or is is holding her up?
OH MY GOD !!!!!!!!!!!!! LOL !!!!!!!!!!!!!!!!
Speaking of the cat's-ass, where do you stick the flag antenna?
http://www3.sympatico.ca/johnfrancis/scuba.htm
The first cat I find...
Al Wells wrote:
>
> In article <3CB22EF9...@worldnet.att.net>, omg...@worldnet.att.net
> says...
>
> > Find a fresh road-kill possum. Throw it in the trunk. By the time you
> > get to the dive site, it will be fully inflated, works like a torpedo
> > float but cheaper.
>
> On the outside chance that Popeye doesn't know how to tell if it is
> fresh, here's what you do. On your way to the still, stop at every dead
> possum and use a piece of chalk to draw a circle around it. On your way
> home, just grab the first one you see with no circle.
Right. It ain't proper to use dinner as a dive float.
Point of clarification for yankees: in Tennessee, a seven course meal is
roadkill and a six-pack.
And after the dive, you've got a snack!
Dave.
> mike gray wrote:
> >
> > Al Wells wrote:
> > >
> > > In article <3CB22EF9...@worldnet.att.net>, omg...@worldnet.att.net
> > > says...
> > >
> > > > Find a fresh road-kill possum. Throw it in the trunk. By the time you
> > > > get to the dive site, it will be fully inflated, works like a torpedo
> > > > float but cheaper.
> > >
> > > On the outside chance that Popeye doesn't know how to tell if it is
> > > fresh, here's what you do. On your way to the still, stop at every dead
> > > possum and use a piece of chalk to draw a circle around it. On your way
> > > home, just grab the first one you see with no circle.
> >
> > Right. It ain't proper to use dinner as a dive float.
>
Mike I'm impressed that was a GOOD ONE!!!!
>
> Point of clarification for yankees: in Tennessee, a seven course meal is
> roadkill and a six-pack.
--
What's all the fuss about? Come on and see for your self. You MIGHT Like it!
Server: irc.rec-scuba.com Port: 6666
http://www.rec-scuba.com/index.php
You Don't HAVE to be NUTS to be a SysAdmin/WebMaster. BUT it Helps!
>On the outside chance that Popeye doesn't know how to tell if it is
>fresh, here's what you do. On your way to the still, stop at every dead
>possum and use a piece of chalk to draw a circle around it. On your way
>home, just grab the first one you see with no circle.
What if he doesn't notice after picking it up that it was simply covering the
circle he drew a couple of hours ago?
Steve
The above can be construed as personal opinion in the absence of a reasonable
belief that it was intended as a statement of fact. Or it might just be to
generate discussion.
Actually, the first 10 feet have the greatest relative air
contraction/expansion, and will do the greatest relative damage to
lung tissue if it is not equalized.
Lung tissue can be damaged by as little as 40 millibar of pressure
differential; this is equivalent to about 16 inches of water pressure.
(OK, this is the extreme case, but there are recorded cases of people
getting killed from holding their breaths from 4-5 feet depth).
>If it's not a lung condition then you might want to look at HSA which has a
>multilevel certification course and has certified quads to dive. (With a bit
>of help from their friends.)
Also, if you have any kind of lung, heart or metabolic condition
GO SEE A COMPETENT MEDIC before engaging in scuba/snuba. A competent
medic is some licensed physician that also knows about BOTH diving
medicine AND your condition. As this may narrow the field a bit, a
call to DAN may be needed to turn up qualified medics in your
neighbourhood.
Have safe diving, all.
-- morten