HDTenEightyP/NetNews huggingface dataset:
From: leej@sgi.com (Lee Jones)
Newsgroups: rec.scuba
Subject: Re: Boyancy control with drysuits
Date: 26 Aug 92 16:19:05 GMT
Organization: Silicon Graphics, Inc.

In article <1992Aug25.233313.16853@hplabsz.hpl.hp.com> peterson@hpl.hp.com (Chris Peterson) writes:
>
>The last 4 feet is -- theoretically -- the most dangerous part of an ascent
>since the greatest volume changes take place there.
>
>If my memory serves me properly, it only takes about 2psi overpressure to start
>tearing the alveoli of the human lung.  If you do the numbers, there is more
>than a 2psi increase from about 5fsw to the surface (closed, flexible vessel
>like one's lungs while breath-holding).
>-- 

That scares the sh*t out of me.  2 psi?  I always heard numbers like 6-8'.  
Anybody have a reference near by?

Regards, Lee
Newsgroups: rec.scuba
From: saitowit@underdog.ee.wits.ac.za (SAITOWITZ L S)
Subject: mask strap
Organization: Wits Electrical Engineering (Undergrads).
Date: Thu, 3 Sep 1992 08:52:19 GMT

Are there any safety reasons for diving with a mask strap? I'm quite new to 
diving, but find the strap and snorkel quite a bother. Is it unsafe to dive 
with the snorkel say under your knife strap on your leg and to just clip 
your mask to your BC when on the surface?

Lesley

P.S. Are there such things as contact lenses that are calibrated for the 
refractive index of water?  

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Lesley Saitowitz
University of the Witwatersrand
Electrical engineering
saitowit@underdog.ee.wits.ac.za
Newsgroups: rec.scuba
From: peterson@hpl.hp.com (Chris Peterson)
Subject: Re: PEEING IN A WETSUIT.
Date: Mon, 31 Aug 1992 21:34:31 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California
Keywords: pee, wetsuit

In article <keulen.715078178@possum> keulen@possum.csu.murdoch.edu.au (Michael van Keulen) writes:
>
>Wetsuits certainly do circulate water ... I've never had a problem with smells
>in my suit after peeing in it, even when getting out within half an hour of
>peeing.  Basically I pee in my suit to extend the time I have underwater (I
>can't afford a 7mm suit or one of the new suits with seals on them :-(  ).  I
>find that peeing in my suit can give me an extra half hour from the starting-
>to-shiver stage.  BTW, before anyone starts telling me I should get out then
>anyway, I dive for my studies (marine biology), and often can't squeeze in
>other dive dates due to weather.
>
	I dive in 50-55 oF (10-11 oC) water off northern California, and
	have personally noted the deliterious effects of hypothermia. 
	I encourage you to review the effects of hypothermia on divers
	for yourself very soon.

	Continuing to dive when cold -- much less, shivering -- is not
	only uncomfortable (your choice), but potentially dangerous too.

	Hypothermia starts to decrease mental acuity and manual dexterity
	almost immediately, that is, as soon as you start to *feel* cold.
	The mental and manual deficits continue to increase as the hypo-
	thermia increase.  These deficits could mean the difference between
	an inconvenience and an accident underwater.

	Diving when cold also increases the chances of the bends.  Some
	dive tables stipulate conservative corrections for a cold diver
	(use the next greater dive group letter at the end of a dive where
	the diver *felt* cold, for example).

	"Now let's be careful out there."
			   -- Hill Street Blues
-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
                                                            peterson@hpl.hp.com
From: chris@smurf.sti.com (Chris Guthrie)
Newsgroups: rec.scuba
Subject: Re: nasa.ames
Date: 25 Aug 92 18:44:44 GMT
Reply-To: chris@sti.com
Organization: Software Transformation Inc.


In article <1992Aug25.174933.25298@tamsun.tamu.edu>,
wjh0265@tamsun.tamu.edu (William Hobson) writes:
|> I saw a mention of nasa.ames as a location for dive sites.
|> My name server has not heard of it - what is the IP number.
|> Also, is there some docs I can refer to?

Try ames.arc.nasa.gov (128.102.18.3)
	Chris
From: bassett@basset.wro.dec.com (Greg Bassett)
Newsgroups: rec.scuba
Subject: For Sale: Camcorder & UW Video Housing
Date: 25 Aug 92 17:57:20 GMT
Reply-To: bassett@basset.wro.dec.com (Greg Bassett)
Organization: Digital Equipment Corporation



For Sale:

Chinon Pocket 8mm full featured camcorder
6x zoom, macro, auto-focus, fade, etc.
Very good condition

2 regular, 2 large batteries in various conditions

Custom-made cast aluminum housing. Includes dome and flat ports.
Includes mounts for cameras, lights, etc. Very strong, durable system.
Excellent condition.

No problems, no flooding, or anything of the like.

$1200 for the package, plus shipping if outside of SF bay area.

Reason for selling: Have new Sony TR-81 with new housing.

---------------------------------------------------------------------------
Greg Bassett - KJ6EP				KJ6EP @ N6QMY
Digital Equipment Corp                          (408) 496-3474
Santa Clara, CA                                 bassett@merlot.wro.dec.com
                                                bassett@merlot.enet.dec.com
---------------------------------------------------------------------------
Newsgroups: rec.scuba
From: npatten@nz.oracle.com ("Nick Patten")
Newsgroups: rec.scuba
Subject: Fwd: Has anyone dived the Solomon's
Date: 30 Aug 92 23:27:08 GMT
X-Unparsable-Date: Mon, 31 Aug 92 11:25:41 NZS


Hi..

I posted the message below a couple of days back, and neglected to mention that
I don't have direct access to 'readnews', therfore could you please post
responses to me directly, as well as the bulletin board.



Cheers & thanks in advance
Nick



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



---- Included Message ----

Received: 08-30-92 11:38                         Sent: 08-30-92 11:37 
From: npatten.NZ
To: rec_scuba
Subject: Has anyone dived the Solomon's

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  *
*****************************************************************
From: will@sunny.dab.ge.com
Newsgroups: rec.scuba
Subject: Need some information
Date: 3 Sep 92 16:33:43 GMT
Reply-To: will@sunny.dab.ge.com
Organization: General Electric - SCSD

I'am looking for information about commercial diving, i.e., physical requirements,
schools in south or southwest, job opportunities, etc.  I would appreciate any 
e-mail you might send my way.

Will Stafford
Port Orange, Florida
From: zombie@voodoo.boeing.com (Mike York)
Newsgroups: rec.scuba
Subject: Re: Good Prices on Tanks at yardsales
Date: 25 Aug 92 22:03:50 GMT
Reply-To: zombie@voodoo.boeing.com
Organization: BoGART System Development

In article <1992Aug25.102810.1@sscvx1.ssc.gov>, schludermann@sscvx1.ssc.gov writes:
|> 
|>   I've had good but irregular luck a yards sales in the Austin and central
|> Texas area.  Things like steel 72's for $20, aluminum 50's for $4, backpacks
|> for $5 ...  The only draw back about yard saling is that there is the
|> potential for the activity to become addictive, diverting at every yard sale
|> post is a common symptom.  I

My wife suffers from this affliction.  It's very difficult to get anywhere on
time with her on Saturday mornings with all the yard sales and what not.  On
the other hand, I must say that I do have a very nice collection of Hawaiian 
shirts as a result of her addiction.  Not to mention the spare set of fins, a 
couple extra pairs of gloves, a wetsuit hood and a dive knife that she picked 
up for $5.  Not bad...

-- 
    Mike York                     
    Boeing Computer Services     
    (206) 865-6577              
    zombie@voodoo.boeing.com
From: jkg@prism.gatech.EDU (Jim Greenlee)
Newsgroups: rec.scuba
Subject: One more thing ...
Date: 31 Aug 92 13:31:02 GMT
Distribution: usa
Organization: Georgia Institute of Technology

My wife and I will be going on a diving cruise (private charter) next week
in the Florida Keys (starting from Key West and working our way up toward
Miami). I'll post a trip summary when we get back since there has been so
much interest in what's going on down there in the aftermath of Andrew.

-JimG

-- 
Jim Greenlee (jkg@cc.gatech.edu)	Jryy abj lbh'ir tbar naq qbar vg!
Instructor, College of Computing	Whfg unq gb xrrc svqqyvat jvgu vg
Georgia Tech, Atlanta, GA 30332		hagvy lbh oebxr vg, qvqa'g lbh ?!
Newsgroups: rec.scuba
From: mihai@sep.Stanford.EDU (Alexander Mihai Popovici)
Subject: Dive Computers  
Organization: Stanford Exploration Project
Date: Tue, 25 Aug 1992 17:00:53 GMT

I wonder what are your thoughts folks, on the price of todays
Dive Computers.  It seems to me that with the software
being quite straightforward and the hardware pretty simple,
the manufacturing cost shouldn't exceed $40-$50. 
So what makes them so expensive?
If the manufacturers complain about low volume, why don't
they sell them for under $100.  They'll probably sell millions...
Is it the liability?  

Cheers
MIhai
From: provost@mozart.NoSubdomain.NoDomain (peter provost)
Newsgroups: rec.scuba
Subject: Cayman & Andrew ?
Date: 2 Sep 92 20:52:37 GMT
Organization: Colorado State University, Fort Collins, CO  80523

Does anyone have any good info about Hurricane Andrew's effects on Grand Cayman?
I was hoping to dive there this Christmas?

--P.G.Provost - provost@cs.csu.edu
Newsgroups: rec.scuba
From: clary@eltanin.rtp.semi.harris.com (Dave Clary x631)
Subject: IDI Regulator Info Wanted
Followup-To: rec.scuba
Date: Fri, 28 Aug 1992 17:56:20 GMT
Distribution: usa
Organization: Harris Semiconductor, Research Triangle Park, NC
Keywords: IDI
Summary: Is their stuff any good

I've been monitoring this newsgroup since January 92 and haven't
noticed any traffic concerning IDI, International Divers Inc,
equipment, specifically regulators. 

The closest local dive shop, where I chose to get my OWI cert,
was apparently the last shop to open in the area. Consequently,
he claims, the other shops had scarfed up rights to sell major
brands such as scubapro, USD, etc. This left him as the East
coast rep for IDI.

Well, he's a great guy and diver and his prices are good so I'd
like to give him the business if possible.  Anybody got anything
good or bad to say about IDI as a company, IDI Super Star II reg?

Thanks...(P.S. if I screwed anything up, it's my first posting
ever, ok)

           --Dave



-- 
=======================================================================
Dave Clary 			     | Harris Semiconductor
Phone:    (919) 549-3631	     | P.O. Box 13996
Internet: clary@rtp.semi.harris.com  | Research Triangle Park, NC 27709
From: hand@hpspdla.spd.HP.COM (Steve Hand)
Date: Thu, 27 Aug 1992 17:25:39 GMT
Subject: Re: RE: BOUYANCY CONTROL WITH DRY SUITS
Organization: HP Stanford Park - Palo Alto, CA
Newsgroups: rec.scuba

After seeing my buddy use a Zeagle BC, I've been diving with
my half on my belt and half in my BC.  I'm lucking enough to 
only need 20 lbs total, so the 5 lb soft weight I put into 
each pocket is not going to rip the pockets out.  

I find it much more comfortable while in the water and
my back doesn't ache so bad after the dives.  The weights
in the velcro'ed pockets can still be ditched although
not as fast as the belt.

[From previous note]
>  ...My 32-pound weight belt let go at about 35 feet.  I felt a pop and
>  saw it land on the bottom;  ...
>       Ten seconds from 35 feet works out to over 200 feet per minute.
> ---Charlie_Gibbs@mindlink.bc.ca

As a side effect, I shouldn't have the ballistic problem if 
my weight belt suddenly jumped off.

Comments welcomed,

Steven J Hand
_________________________________________________________________________
E-Mail: hand@spd.hp.com     
Organization: Hewlett-Packard, NTD(Network Test Division)
From: cmac@anthrax.EBay.Sun.COM (Chris MacDonald)
Newsgroups: rec.scuba
Subject: South Bay scuba classes?
Date: 27 Aug 1992 21:45:42 GMT
Organization: Sun Microsystems Federal, Milpitas, CA.
Distribution: ba
NNTP-Posting-Host: anthrax.ebay.sun.com

Instructors,

Are any of you starting open water certification classes within the next few
weeks?  I have two friends that want to get started right away.

If so, please send me your course outline and any other details as soon as
you can.

Thanks, Chris
From: Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs)
Newsgroups: rec.scuba
Subject: Re: Boyancy control with drysuits
Date: 25 Aug 92 20:25:46 GMT
Organization: MIND LINK! - British Columbia, Canada
Distribution: world

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 buoyancy was properly adjusted at the time it happened, so
I was suddenly 32 pounds buoyant, which probably became worse as my
neoprene dry suit expanded during the ascent.  It was near the end
of the dive anyway, so there wasn't much air in either my BC or my
suit.  In any event, there wasn't time to worry about dumping it,
and I doubt it would have made much difference anyway.  Once on the
surface, even after letting out what little air remained in either
my suit or BC, there was no way I was getting back down.

     Ten seconds from 35 feet works out to over 200 feet per minute.

     BTW this brings up another reason to dive with a buddy: he can
retrieve your weight belt for you.  :-)  Sitting on the suface I was
getting pretty bummed out.  It was the first dive on my brand-new
soft weight belt; I was looking at having to either replace it or
go back to those blocks of lead that were giving me lower back pain.
I was sure glad to hear that my buddy saw it and got it back up.
I was even gladder that it hadn't let go earlier in the dive when
we were hanging at 70 feet by a wall that went down and down...

     Oddly enough, when we examined the belt later we found that
the buckle itself hadn't let go.  It was still firmly gripping the
free end of the belt.  It was the other end, which should have
remained securely fastened to the buckle, that came unthreaded.

     It was a good reminder that equipment needs to be inspected
at least as closely before its first use as at any other time -
and that nothing is so simple that it can't be screwed up.

Charlie_Gibbs@mindlink.bc.ca
"I'm cursed with hair from HELL!"  -- Night Court
From: Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs)
Newsgroups: rec.scuba
Subject: Re: ?diuretics and diving
Date: 28 Aug 92 01:23:59 GMT
Organization: MIND LINK! - British Columbia, Canada
Distribution: world

In article <1992Aug27.222014.7705@hplabsz.hpl.hp.com>
peterson@hpl.hp.com (Chris Peterson) writes:

>     There is anecdotal evidence that dehydration increases the chances of
>     barotrauma.

     I've heard it can increase the chance of DCS too.

     We've noticed that diving itself seems to be a pretty effective
diuretic - especially in a wet suit.  Back when we dove wet we'd
usually make a beeline for the nearest bush as soon as we got out
of the water.  At least you can pee in your suit if it gets really
bad.  You can't do that in a dry suit, but fortunately it's never
gotten that bad when we're dry.

Charlie_Gibbs@mindlink.bc.ca
Elevator music brings me down.

Newsgroups: rec.scuba
From: peterson@hpl.hp.com (Chris Peterson)
Subject: Re: Information about advanced deep diving course wanted
Date: Thu, 3 Sep 1992 21:09:28 GMT
Distribution: usa
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <1992Sep2.190620.19318@mailer.cc.fsu.edu> mayne@cs.fsu.edu writes:
>In article <1992Sep2.170103.14706@hplabsz.hpl.hp.com> peterson@hpl.hp.com (Chris Peterson) writes:
>>
>>	NAUI does offer a "deep diving" specialty course and, starting
>>	this year, a mixed gas specialty course.
>>...
>>	The Mixed Gas Diving Specialty course covers ANDI (American 
>>	Nitrox Diving, Inc.?) Nitrox I and Nitrox II, and the course
>>	instructor must have successfully completed ANDI's instructor
>>	course.
>
>Say it ain't so. Calling a nitrox course "mixed gas", while technically
>correct (even air is mixed gas) goes against standard usage and can
>only add to confusion and the false idea that nitrox diving is a high
>tech, advanced, dangerous activity. Why don't they just call it what
>is, "Nitrox", like ANDI and IAND?
>
	*I* called it "mixed gas" diving.  I apologize for any
	confusion I may have increased.  Nitrox diving is pretty
	new to me, and I have yet to see the official announcement
	from NAUI on the specialty course title (if any).

	Until convinced otherwise, I still consider Nitrox diving
	to be "advanced" diving.

	PS> Isn't air technically also "nitrox" (a nitrogen-oxygen mix)?

-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
                                                            peterson@hpl.hp.com
Newsgroups: rec.scuba
From: mayne@pipe.cs.fsu.edu (William Mayne)
Subject: Re: Information about advanced deep diving course wanted
Reply-To: mayne@cs.fsu.edu
Organization: Florida State University Computer Science Department
Distribution: usa
Date: Thu, 3 Sep 92 19:18:21 GMT

In article <Bu0K1B.9rF@apollo.hp.com> daigle@apollo.hp.com writes:
>
>...  I just wish that PADI put the amount of effort into
>its specialty courses, although I hear that cave and cavern are quite
>good.

I didn't know PADI even had a cave specialty. If cave and cavern are
quite good it is because they *may* be using NACD and NSS/CDS
standards and instructors, with PADI just selling the patches and
cards to collectors. I wonder about even this, though. One of my
classmates in an NSS/CDS full cave class was a PADI cavern instructor
who was already teaching and awarding PADI cavern specialty patches.
I'm sure he didn't have very many cave dives even at the intro level,
which is quite restrictive. Both the NACD and NSS/CDS require something
like 50 or 60 logged cave dives after completing full cave, as well as
other requirements, to be a cavern instructor.

A PADI instructor I dive with told me that there are essentially
no formal requirements for instructors to teach specialties.
Just log some not very large number of dives in the specialty
(informally on your own appears to be okay) and pay PADI a fee.
For underwater basket weaving that may be okay. At worst a few people
may be getting ripped off for a few dollars. I hope this isn't true
of the cavern specialty, and certainly for cave diving, if there
is such a specialty in the PADI system.

Bill Mayne
Newsgroups: rec.scuba
From: peterson@hpl.hp.com (Chris Peterson)
Subject: Re: ?diuretics and diving
Date: Thu, 27 Aug 1992 22:20:14 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <1992Aug27.142501.1@sscvx1.ssc.gov> schludermann@sscvx1.ssc.gov writes:
>
>What are the considerations when using diuretics and diving. I am aware of the
>alteration of fluid levels in the body. Would I be limited to shallow diving
>above 33 ft?.
>

#1.  See a doctor who *knows* about diving.  (If a local scuba shop can't
     recommend someone, call DAN 919/684-2948 for references.)

#2.  Anything that causes dehydration should be rigorous avoided when diving 
     (insufficient water intake, coffee, tea, alcohol, excess "Gatorade", etc.)
     There is anecdotal evidence that dehydration increases the chances of
     barotrauma.

#3.  Diuretics alone aren't a "contra-indication to diving".  However, the
     reasons for taking diuretics *may* be a reason to limit or to stop
     diving (again, check with your doctor).    

I take mild diuretics -- under my diving doctor's supervision -- to control
slightly elevated blood pressure (hypertension).  I regularly consume about
6-8 glasses of water a day, and increase this to 8-16 glasses when diving
this *can* create a bit of a problem when I'm using my dry suit :-). 
-- 
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: Information about advanced deep diving course wanted
Reply-To: pyron@skndiv.dseg.ti.com
Organization: TI/DSEG VAX Support
Distribution: usa
Date: Thu, 3 Sep 92 16:23:14 GMT


In article <1992Sep2.190620.19318@mailer.cc.fsu.edu>, mayne@pipe.cs.fsu.edu (William Mayne) writes:
>In article <1992Sep2.170103.14706@hplabsz.hpl.hp.com> peterson@hpl.hp.com (Chris Peterson) writes:
>>
>>	NAUI does offer a "deep diving" specialty course and, starting
>>	this year, a mixed gas specialty course.
>>...
>>	The Mixed Gas Diving Specialty course covers ANDI (American 
>>	Nitrox Diving, Inc.?) Nitrox I and Nitrox II, and the course
>>	instructor must have successfully completed ANDI's instructor
>>	course.
>
>Say it ain't so. Calling a nitrox course "mixed gas", while technically
>correct (even air is mixed gas) goes against standard usage and can
>only add to confusion and the false idea that nitrox diving is a high
>tech, advanced, dangerous activity. Why don't they just call it what
>is, "Nitrox", like ANDI and IAND?

I've always thought of mixed gas as something that gave you depth and bottom
time, like HeliOx.  Nitrox (I thought) gives reasonable depth and better bottom
time (than straight air).  Calling Nitrox mixed gas is technically correct, but
syntactically wrong (or is that contextually wrong?).  And confusing.
>
>>	It's interesting to note that, according to DAN statistics,
>>	repetitive diving and multiday diving are greater risk factors
>>	than depth.
>
>Not surprising, and something to think about seriously.
>
>>  Now, consider the kind of diving most people
>>	do on vacation (me too):
>>	
>>		4-5 days 
>>		3-5 dives/day 
>>		60-100fsw
>>
>>	That's repetitive, multiday, *and* deep (>60fsw).
>
>Well, not really deep in the context of physiology and decompression
>considerations, just training at the beginning levels.

The hazard I see is where people are not thinking about cumulative nitrogen
levels.  I've been in the water with divers who made a late night dive (say in
at 11pm) and thought of themselves as A divers at 9am.
>
>Bill Mayne
>
Gosh Bill, are we agreeing?  :-)
--
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