HDTenEightyP/NetNews huggingface dataset:
From: peterson@hpl.hp.com (Chris Peterson)
Newsgroups: rec.scuba
Subject: Re: PEEING IN A WETSUIT.
Keywords: pee, wetsuit
Date: 28 Aug 92 20:00:18 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <1992Aug28.174716.6330@odin.corp.sgi.com>
dyer@marina.asd.sgi.com (Dyer Crouch) writes:
>
>I heard this nice shot of warmth is great from people I have gone
>diving with. It's damn cold in No. CA.. Unfortunatly on my cert dive, 
>our instructor told us wetsuits do not circulate water & when you peel
>off after a dive people will scatter. I still can not do this even if 
>I try. My brain just won't let me.
>
>I hate you Todd Z.
>
>dyer.  A former student of yours.

Unfortunately, wet suits *do* circulate water.  If I do uriniate, I sometimes
find it necessary to make sure that there is sufficient circulation (brrrr).

If you do urinate in your wet suit, and fail to rinse it and clean it well,
a subtle "stink" can develop.  God forbid you ever have to heat seal a 
suit that hasn't been cleaned properly and cleaned often (visualize "airy 
*yellow* clouds").
-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
                                                            peterson@hpl.hp.com
Newsgroups: rec.scuba
From: duane@blacks.jpl.nasa.gov (Duane Clark)
Subject: Re: Which Grand Cayman dive shop to use?
Organization: Image Analysis Systems Group, JPL
Date: Thu, 27 Aug 1992 15:01:49 GMT


>>wondering which dive shop we should use?
>>Thanks!

For a smaller more personal operation, try Celebrity Divers. They consist
of one dive master and one boat captain. The boat is very fast and
carries six people max. The dive master will provide whatever level of
support you want, and if you show a reasonable level of competence,
will let you go off and do your own thing. Highly recommended.
Phone 809-949-3410.
Newsgroups: rec.scuba
From: dave@hpdstma.ptp.hp.com (Dave Waller)
Subject: Re: Boyancy control with drysuits
Organization: Hewlett Packard
Date: Thu, 27 Aug 1992 17:59:08 GMT

Re: this discussion about what is important when considering the factors
leading to barotrauma.

This cannot be reduced to a simple statement of a pressure differential, as it
is the tensile strength of the alveoli that are the limiting factor, and
whether or not an alveolus is expanded to the point such that that tensile
strength is exceeded.

Consider the balloon analogy for an alveolus. Like a balloon, an alveolus can
stretch to a degree that meets the tensile strength of the membrane, and
beyond that, it will rupture. As such, there is a fixed, maximum volume that
an alveolus can tolerate; beyond that, the pressure differential becomes
significant. Prior to that, pressure differential is not a factor, as there
really is not enough muscular capability in the human lungs to sustain a
pressure differential when the alveoli are not fully inflated.

For the sake of argument, assume that an alveolus can withstand a 10%
overexpansion. Beyond that, it will rupture.

At 100 feet, a diver must ascend 12 feet to a depth of 88 feet to effect a
10% expansion of the alveoli. At this point, the alveolus is at the point
of breaking, and will not withstand further ascent (actually, because of the
elastic properties of the alveolus, it would support a pressure differential
in its overexpanded state, and therefore the depth would be a few feet
shallower; assuming the 2_psi figure quoted is correct, this would add
another 4.5 feet).

Now, at 10 feet, the diver need only ascend FOUR FEET to a depth of 6 feet
to effect a 10% increase in alveolar volume. As you can see, the alveoli can
reach their critical tensile breaking point much more quickly in shallower
water.

Note that the figure of 10% was simply to illustrate the point -- I don't
know offhand what the actual numbers are. However, this serves to illustrate
why the risk of barotrauma is greater in shallow water ascents than in deep
water ascents.

-- 
Dave Waller
YMCA Instructor
From: 21329KAD@MSU (Kim Dyer)
Newsgroups: rec.scuba
Subject: Re: PEEING IN A WETSUIT.
Date: 3 Sep 92 01:49:59 GMT
Organization: Michigan State University


>Years ago when when I did a lot of backpacking, I was taught to always
>pee before climbing into my sleeping bag at night.

Seems to me the logic for that would be so you don't need to get up
late at night, letting all that WARM out of your sleeping bag so you
have to start all over agin.  I know that growing up in New England
(when we still had winters) there were nights that I snuck one toe
out of bed, then decided it could wait until mrorning.
Newsgroups: rec.scuba
From: gardell@ccrs.emr.ca (Felix Gardell)
Subject: Tobermory Dive Buddy Sought (Sept 9 - 13)
Organization: Canada Centre for Remote Sensing, Ottawa
Distribution: na
Date: Tue, 25 Aug 1992 17:02:05 GMT

Hello everyone!

I thought I'd post this request, just in case there are some
eager divers who wish to test their skills in the colder
waters of Georgian Bay (Northern Ontario) along the Bruce
Peninsula.

I'm going to be involved in teaching a university group in
the Red Bay area (on the Bruce Peninsula) which is
located north of Owen Sound (4 hours north of Toronto).

"A perfect chance to get some diving in" I thought --- but
of course I'd need a buddy.  This is where this article is
leading to:  is there anyone out in net-land interested
in going diving anytime between the 9th and 13th of September?

More precisely, diving in the Tobermory area!  The waters are
very clear but cool (possibly upper 50's Fahrenheit).  Definitely
wet-suit (or even dry-suit) material.  For those unfamiliar with
the area, Tobermory is home to an Underwater Park known as Fathom
Five, which is famous for is many (often well-preserved) wrecks.

Should you be interested, please e-mail me back before Friday,
August 28th (the last date on which I will have access to this 
account). 

Thanks!  And to all I wish happy and SAFE diving! 
-- Felix

-- 
Felix Gardell                                      Work:  " A generation ago    
Canada Centre for Remote Sensing    _     , -o     most people finished a 
Energy Mines and Resources Canada    _   _ \<,_    day's work and needed a rest;
Ottawa, Ontario, Canada             -   (*)' (*)   today, they need exercise! " 
Newsgroups: rec.scuba
From: npatten@nz.oracle.com ("Nick Patten")
Newsgroups: rec.scuba
Subject: Has anyone dived the Solomon's
Date: 29 Aug 92 23:40:00 GMT
X-Unparsable-Date: Sun, 30 Aug 92 11:38:35 NZS


Hi dudes/dudesses..

I am diving the Solomon's (just East of Papua new Guinea) next month and was
wondering whether anybody has done any diving there. I'd be most interested to
hear your comments as there's not much info about this beautiful diving area.
I'm particularly interested in Honiara (the capital) & 'Gizo' & also Uepi.

I'll be sure to fill the rest of you in on what the diving's actually like
there when I return. BTW, its a pretty cheap place to stay, as its not as
touristy as Fiji etc....

Cheers & Thankx in advance
Nick



*****************************************************************
*  Nick Patten			unixgate:npatten@nz.oracle.com  *
*****************************************************************

Newsgroups: rec.scuba
From: rarobert@ursa9.cs.utah.edu (Robin Roberts)
Subject: Re: Florida Keys - REALITY
Date: 1 Sep 92 10:54:31 MDT
Organization: University of Utah CS Dept

In article <1992Sep1.140700.27918@news.miami.edu> spindler@rcf.rsmas.miami.edu writes:
>I'm not sure if the power situation in the Keys has improved, or if it will
>improve in the near future.  The Homestead and Florida City areas lost their
>entire power distribution grids, and I don't know how long it will take FPL to
>reconnect the Keys.  As they are connected by high-tension powerlines, I expect
>that they may be reconnected fairly soon, but it depends on how the rest of the
>grid reconstruction is fairing.  Most of the hardest-hit areas are expected to
>be out of power for a long time (read: months).

Word in the Keys on Friday was that one of the big feeder lines for the
Keys electric was supposed to be up by 3 September.  We were skeptical at
first, but they were making significant progress towards that date by the
time we left.
 
                               robin roberts



Newsgroups: rec.scuba
From: wolgamot@milton.u.washington.edu (Greg Wolgamot)
Subject: Re: Hurricane ANdreW
Organization: University of Washington, Seattle
Date: Mon, 31 Aug 1992 16:38:57 GMT

I've heard that hurricanes can have devastating effects on coral reefs.
Does anybody out there know of Andrew's effect on Florida's reefs?
Newsgroups: rec.scuba
From: lastuka@acs.ucalgary.ca (Tina Lastuka)
Subject: Repluse Bay/Hudson Bay
Date: Tue, 01 Sep 92 02:29:47 GMT
Organization: The University of Calgary, Alberta

   I have a friend who is going diving in Repluse Bay just off
   Hudson Bay... has anyone dived there?  What should he be
   looking or looking out for??  :)

  
   Thanks!
-- 
          **********************************
          * TINA THE HAPPY LITTLE OPERATOR *      lastuka@acs.ucalgary.ca
          **********************************
From: danbe@tekred.CNA.TEK.COM (Dan Beougher )
Newsgroups: rec.scuba
Subject: Belize
Keywords: V-A-C-A-T-I-O-N
Date: 31 Aug 92 15:29:30 GMT

New certification.  New to newsgroup.  Enjoyed the 50 articles on
"to whiz or not-to-whiz" in your wetsuit.  I thought I was in
talk.bizarre for a moment!

I saw a request for Belize info fly by but saw no posted replies.  I
hate to repeat, but I need the same information.  I'm going in November
and would like suggestions.  There will be one diver and one
snorkler.  I was thinking perhaps four days at Key Caulker and four
somewhere else.  We'd also like to take in some rainforest and Mayan
ruins.  We have little interest in the "resorty" scene, preferring
culture to class.  Any tidbits would certainly be appreciated.

dB
Newsgroups: rec.scuba
From: peterson@hpl.hp.com (Chris Peterson)
Subject: Re: Boyancy control with drysuits
Date: Tue, 25 Aug 1992 23:42:56 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <14573@mindlink.bc.ca> Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs) writes:
>In article <p0amsok@twilight.wpd.sgi.com> story@sgi.com
>(David (Duis) Story) writes:
>
>>Still think you didn't exceed 100'/minute?
>
>     I'd sure think you could, based on last Sunday's experience.
>My 32-pound weight belt let go at about 35 feet.  I felt a pop and
>saw it land on the bottom; I knew there was no chance of grabbing
>it, so I just concentrated on breathing on the way up.  I had time
>to inhale slightly once or twice on the way.  It felt like it took
>about 10 seconds to reach the surface; this is a subjective thing,
>and I could be way wrong, but I doubt it took any more than that,
>and might have been even less.  In any event, my computer was not
>happy.
>
	My $0.02-worth...

	Flaring your arms and legs out, and arching your back to assume
	a position like that of a sky-diver -- with your chest facing the
	approaching surface -- has been known to help slow a bouyant
	ascent significantly.
-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
                                                            peterson@hpl.hp.com
Newsgroups: rec.scuba
From: pyron@skndiv.dseg.ti.com (Dillon Pyron)
Subject: Re: depth in the US of A
Reply-To: pyron@skndiv.dseg.ti.com
Organization: TI/DSEG VAX Support
Date: Wed, 2 Sep 92 21:02:07 GMT


In article <pbp8i4s@fido.asd.sgi.com>, leej@sgi.com (Lee Jones) writes:
>In article <1992Sep2.164617.26994@news.miami.edu> spindler@rcf.rsmas.miami.edu writes:
>>In article <guido.715432167@sun-3>, guido@sun-3.cs.uct.ac.za 
>>(Guido Zsilavecz) writes:
>>>Question: how do US divers measure pressure at depth? bar/atmospheres
>>>of PSI?
>>
>>We generally work with atmospheres absolute (ATA), with occasional references
>>to PSI just to mix it up a little.  1.0 is a lot easier to remember than 14.7
>> 
>
>Brings up a good question.  I have a question on my OWI test
>that asks something like "If you're 66 ft. deep in Monterey
>Bay, what is the ambient pressure?" Multiple guess answers are various
>numbers in PSI's.  Bottom line, my student has to remember that it's 
>14.7 psi/ATM, has to allow for the one at the surface, and has to be
>able to multiply 3 * 14.7.  
>
>Do you think this is a useful question to ask?  If not, why not, and how
>would you change the question to make it more useful?  Remember, this
>is a NAUI Open Water I test.  These people are not divemaster candidates
>(nor are they quickie resort course students :-).

Neither you nor I actually do these kinds of problems at depth.  I think the
real reason they are asked (PADI asks the same type of questions) is to
determine that the student understands the effects of depth and pressure.  We
are aware of what is going on, but don't really think about it.  A fresh
student needs to think about it, since, IMHO, the consequences are not good.

>(nor are they quickie resort course students :-).
And the fact that most resort courses ignore this is one more strike against
them.  IMHO.
>
>Regards, Lee
>
--
Dillon Pyron                      | The opinions expressed are those of the
TI/DSEG Lewisville VAX Support    | sender unless otherwise stated.
(214)462-3556 (when I'm here)     |
(214)492-4656 (when I'm home)     |"Do something different, DISAPPEAR"
pyron@skndiv.dseg.ti.com          |  "DISAPPEAR"
                                     _A Day On Earth_
                                     Brave Combo

Newsgroups: rec.scuba
From: pyron@skndiv.dseg.ti.com (Dillon Pyron)
Subject: Re: PEEING IN A WETSUIT.
Reply-To: pyron@skndiv.dseg.ti.com
Organization: TI/DSEG VAX Support
Date: Wed, 2 Sep 92 20:41:56 GMT


In article <1992Sep2.150952.12858@shearson.com>, pweissma@shearson.com (Philip Weissman) writes:
>Years ago when when I did a lot of backpacking, I was taught to always
>pee before climbing into my sleeping bag at night.  Under normal
>bodily functioning, the heat dissipated from the body to the
>surroundings is replaced by heat generated within the body.  This takes
>energy.  Removing urine from the body (by peeing lets say), relieves
>the body of the task of expending energy to maintain the temperature
>of the urine at body temperature.  Consequently, after peeing, the
>body can more effectively maintain a normal temperature.  This benefit
>is in addition to the warming affect of the urine on the skin.
When I was climbing, I thought the reason to go before climbing in the sack was
because you didn't want that 2am wake up call.  Except that 2am was when we had
to get up anyways :-)
>
>
>> I'm told, by someone who should know (MD) that, when the kidneys get cold, they 
>> increase the blood flow through them.
>
>Hypothermia is the loss of the body's ability to maintain its core
>temperature.  This is a very serious and dangerous condition.  Unless
>you are suffering from hypothermia, then your kidneys are at your
>normal body temperature.  The validity of the above statement is not
>in question but I highly question its relevance to a discussion on
>peeing in a wetsuit.
>
>>  Which increases renal output.  Which
>> temporarily raises the temperature of your wet suit.  You ice cube divers might
>> try a small heat pack across the kidney area.  Of course, I'm told that when
>> the kidneys get cold, they increase the blood flow through them ...
This is more a comment on why the sudden urge arises.  Someone else described
it as a result of the blodd shunt to the core.  Same real effect.
>
>In a cold environment, blood flow to the limbs is restricted so that
>more blood is left to circulate through and warm the life-sustaining
>organs.  This is why your fingers and toes may get white, stiff and
>numb in the cold.  With the blood flow restricted mostly to the body
>core, the blood makes more frequent passes through the kidneys and it
>is necessary to pee more often.
Which is how I contracted a very mild case of frostbite on my toes and fingers.
BTW. Dehydration accellerates this effect, although I hope most divers aren't
worried about frostbite.  Nobody diving at -40C I hope.

In any case, I tend to agree that "heating" the wetsuit does little more than
psycholgical aid, but even that helps.
>
>-Philip
>
>
--
Dillon Pyron                      | The opinions expressed are those of the
TI/DSEG Lewisville VAX Support    | sender unless otherwise stated.
(214)462-3556 (when I'm here)     |
(214)492-4656 (when I'm home)     |"Do something different, DISAPPEAR"
pyron@skndiv.dseg.ti.com          |  "DISAPPEAR"
                                     _A Day On Earth_
                                     Brave Combo
From: peterson@hpl.hp.com (Chris Peterson)
Newsgroups: rec.scuba
Subject: Re: Buildup Dives
Date: 28 Aug 92 19:52:13 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <Btoxsn.Ayr@kings.demon.co.uk> russell@kings.demon.co.uk
(Russell Brown) writes:
>
>Does anyone know of any physiological reasons for doing buildup dives in
>preparation for a deep one?  I'm not thinking about a novice diver going
>deep for the first time, more about an experienced diver planning a deep
>dive and heeding the training advice about programs of buildup dives.
>
>I realise that there are certainly psychological reasons but cannot
>think of any physical ones.

	In Gilliam's article on deep diving in a recent issue of
	Rodale's _Scuba_Diving_ magazine,  I believe that he
	suggests that dives of increasing depth aid in acclimating
	the diver to nitrogen narcosis.
-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
                                                            peterson@hpl.hp.com
From: brad.radius.com (brad may)
Newsgroups: rec.scuba
Subject: Re: Hurricane ANdreW
Date: 1 Sep 92 02:08:09 GMT
Reply-To: brad.radius.com (brad may)

I spoke yesterday (8/30/92) with my brother who is an instructor at 
Lost Reef dive shop in Key West.  He said hurricane damage was very
slight there, and the visibility since the hurricane has actually 
been unseasonalby good.  "The hurricane passed through too fast to 
really churn things up."  No coral damage in Key West.

Things in the northern Keys were much worse of course.

brad@radius.com (Brad May)
Newsgroups: rec.scuba
From: dave@hpdstma.ptp.hp.com (Dave Waller)
Subject: Re: Tank Carrying and such
Organization: Hewlett Packard
Date: Thu, 3 Sep 1992 17:10:21 GMT

In article <95256@bu.edu>, grot@bass.bu.edu (henry nadig) writes:
|> Having just bought tanks, I am in a position to now care about tanks. and
|> I had a fiew questions.  
|> 
|> 1)	Is it bad or harmful to carry tanks by the valve?  Is it really
|> 	Better to buy a tank carrying thingy? I have no problem carrying
|> 	it by the valve, so I was just curiour.

Not at all; the valve/tank joint is very tough and robust, and can be used
to carry the tank. However, the tank carrying thingies are more balanced,
comfortable, and convenient, so if you need to carry the tank more than a
few tens of yards, I'd consider buying them.

|> 2)	Is it bad for the tank to put stickers on it, I keep thinking of
|> 	the time I repainted my racing bike, and rust developed under stickers
|> 	because I couldn't see the water getting trapped there.

It is not considered taboo to put stickers on a tank; however, as part of
a visual, ALL stickers should be removed from the tank to inspect the
material underneath for signs of corrosion and pitting. Also, divers have
been known in the past to place stickers over obvious gouges and other
damage that must be inspected as part of a visual.

If you out stickers on your tank (indeed, there will have to be a visual
sticker on there after the tank is >1 year old), make sure the dive shop
removes all stickers and inspects the tank material as part of their
visual. My experience with this aspect of a visual has been extremely
disappointing -- I have never had a shop remove stickers as part of their
standard visual without my asking.

Another disadvantage to stickers is that they usually result in some paint
loss when they are removed.

|> 3)	Are tank boots really neccessary?  They always seem to fall off, and
|> 	would seem to trap water against the side of the tank...

What kind of boots do you use? The biggest problem I have had with boots
is getting them on and off, as they are usually really tight!

Nonetheless, it is my opinion that boots are a very necessary accessory.
They protect the bottom of the tank from deep gouging and denting, although
tanks are pretty tough to begin with and can withstand quite a bit of
abuse before they must be condemned. Further, if you are using a high
pressure tank (3500 psi) from Sherwood or US Divers, you can't stand the tank
up without a boot, as the bottom is spherical.

-- 
Dave Waller
YMCA Instructor
From: sc5@prism.gatech.EDU (CSEPLO,STEPHEN P)
Newsgroups: rec.scuba
Subject: Re: PEEING IN A WETSUIT
Date: 28 Aug 92 16:13:17 GMT
Organization: Georgia Institute of Technology

In article <92240.215804FKK@SLACVM.SLAC.STANFORD.EDU> FKK@SLACVM.SLAC.STANFORD.EDU writes:
>Many of us have known that brief surge of warmth from peeing in
>our wetsuits.
>
>A friend recently told me that due to a change that takes place
>in your skin after contact with urine, you lose heat more rapidly
>after peeing in your suit.  Does anyone confirm this?

Don't know about that, but I do know that as my first instructor said,

"There are two types of divers:

	Those that pee in their wet suits...

	And those that lie."


-- 

The Mad Hata  

"Hey, Mon....Tako Kichi!"
Newsgroups: rec.scuba
Subject: Test - I apologize
From: wall@hel4.brl.mil
Date: 2 Sep 92 10:42:08 EST
Distribution: world
Organization: U.S. Army Human Engineering Lab  Aberdeen, MD

I apologize for using band-width, but I'm having some serious problems posting
and this is my favorite news group.

Jeff Wall 
Newsgroups: rec.scuba
From: awpsys@ritvax.isc.rit.edu
Subject: Dive Store status in Florida City
Reply-To: awpsys@ritvax.isc.rit.edu
Organization: Rochester Institute of Technology
Date: Wed, 26 Aug 1992 13:31:15 GMT

Does anyone know the status of the dive shop called The Dive Zone in Florida
City which is on  U.S 1 just before it turns from four lanes to two lanes on
the way to Key  Largo in the wake of the hurricane?

The TV reports of the status in Florida City look pretty grim.  I had purchased
some scuba gear from the Dive Zone (nice store, friendly people) several weeks
ago when I was down diving the area.  The equipment had to be ordered. I had
talked to them this past Friday and they were planning on shipping my
equipment via UPS on Monday morning.  Unfortunately, I can't help but think
the equipment may have been shipped elsewhere Monday morning via Andrew.

- Andy

---
Andrew W. Potter                             Internet: awpsys@ritvax.isc.rit.edu
Associate Director                                Bitnet:   awpsys@ritvax.BITNET
Data Center Operations & Technical Support     Information Systems and Computing
Rochester Institute of Technology, P.O 9887, Rochester NY, 14623  (716) 475-6994

Newsgroups: rec.scuba