HDTenEightyP/NetNews huggingface dataset:
From: story@sgi.com (David Story)
Subject: EDO Charter; Cypress Sea 9/25 7AM 3 Dives $70
Organization: Silicon Graphics, Inc.
Distribution: ba
Date: Wed, 16 Sep 92 01:26:54 GMT

Yet another in our series of "Pirate Ventures" Experienced Diver Only
charters on the Cypress Sea.  Boat leaves at 7AM Friday 9/25.  3
dives, with tanks, air, drinks, and lunch supplied.  Cost $70.00.  The
boat is usually limited to 12 rather than 20 for our comfort and
convenience.

Experienced divers only please.  To sign up, please send me mail
before 9/19 or call Phil Sammet after 9/19 directly at 408/372-3200.
If you haven't been out with us before, one of us will do a brief
screening interview.

Cheers,

David Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@bent.wpd.sgi.com		  Every dive is a decompression dive.
Newsgroups: rec.scuba
From: mjs@hubcap.clemson.edu (M. J. Saltzman)
Subject: Re: Buhlmann Tables: Source?
Keywords: buehlmann buhlmann tables source english german french
Organization: Clemson University, Clemson SC
Distribution: na
Date: Thu, 10 Sep 1992 18:28:24 GMT

>|> In article <1992Aug25.184058.28470@walter.bellcore.com> devetzis@bellcore.com writes:
>|> >Does anyone know of a source for Buhlmann tables suitable for
>|> >carrying on dives?  The wallet-sized version that comes with
>|> >the Aladin Pro is less than ideal.  I'm looking for a large,
>|> >easy-to-read-when-narced table (preferably in English ;-).
>|> 

[...and other posts to the same effect...]

Nick S., what about collecting information on sources for the various
tables in the FAQ?  We now have had interest in these, the DCIEM(sp)
ones, and maybe some others I missed.  I am thinking about some new
tables, but haven't decided which yet, till I have a chance to read
Lippman's book, and think more about an eventual computer purchase.
-- 
		Matthew Saltzman
		Clemson University Math Sciences
		mjs@clemson.edu
Newsgroups: rec.scuba
From: mac@bnr.ca (Michael Campbell)
Subject: Re: Flower Gardens Banks
Keywords: Scuba Fling
Organization: Bell-Northern Research, Richardson, Tx.
Date: Sat, 12 Sep 1992 16:02:43 GMT

To: Rich Garrett

You asked for a phone number for the boat, so that you could arrange a 
trip yourself. We arranged our trip via two different SCUBA shops here
in Texas, but I see that you are from LA. The Fling brochure I have 
lists a few shops in LA that book on the Fling. Here they are: give
them a call, and I am sure they will be happy to take your money!!

Adventure Sports Inc
Shreveport
318-865-8587

Harry's Dive Shop,
Metarie
504-888-4882

Strictly Scuba,
Leesville
318-238-0709

The Scuba Company,
New Orleans,
504-244-6292

========================================================================
Michael Campbell                  BNR Inc.               Richardson, Tx.
ESN        444-5595              Dept 2Q35                 75082-4399
PSTN (214) 684-5595
From: mak@spuddy.uucp (Mark Kellaway)
Newsgroups: rec.scuba
Subject: Re: Deep diving; Thermal effects of peeing in wetsuit
Date: 9 Sep 92 17:16:18 GMT
Organization: Spuddy's Public Usenet Domain

In article <pk1kvl4@twilight.wpd.sgi.com> story@sgi.com (David (Duis) Story) writes:
>In article <9209041413.AA09095@lanmail.NCSC.NAVY.MIL> Mahan_Stephen@LANMAIL.NCSC.NAVY.MIL writes:
>>
>
>(On peeing:)
>>Releasing
>>this warm fluid into the wetsuit displaces some colder fluid in contact
>>with the skin, raising the average temperature of the surrounding fluids,
>>and thereby reducing the rate of heat loss.  The effect is minor but 
>>feels pretty good.
>
>Doesn't warming the skin offer the possibility of opening up
>peripheral circulation and increasing heat loss?
>
not to mention nappy rash, if repeatedly done whilst on holiday. (lucky to
say it happened to a friend not me :-)

mak
-- 
mak@spuddy.uucp ...!uknet!axion!spuddy!mak 
"I was born a cynical bastard
                          and I'm gonna die a cynical bastard" - Rab C.Nesbitt
Meeeeow ! Call Spud the Cat > +44 203 638780 < for free Usenet access in UK
Newsgroups: rec.scuba
From: keulen@possum.csu.murdoch.edu.au (Mike van Keulen)
Subject: Re: mask strap
Organization: Murdoch University
Date: 10 Sep 92 02:09:29 GMT

jstrom@hpcc01.corp.hp.com (Johan Strombom) writes:

>Yes, Jaques Mayol (famous record setting free diver) dives with special contact
>lenses to avoid mask squeeze. They are custom manufactured by an optician
>in Marseilles. They are very expensive US$ 1000.- + a pair.

Wouldn't such lenses cause eyeball squeeze - the pressure difference would be
more localized certainly, but at depth could cause a problem, couldn't it?

Mike

--
***************************** Michael van Keulen *************************** 
* Snail: School of BES - Biology         e-mail: keulen@murdoch.edu.au     *
*        Murdoch University              phone:  ++ 61 (09) 360-2843 (work)*
*        Murdoch WA 6150  AUSTRALIA              ++ 61 (09) 417-3902 (home)*
*************************** "To Love is to _LIVE_!" ************************
Organization: University of Illinois at Chicago
Date: Wednesday, 9 Sep 1992 15:00:24 CDT
From: <U61474@uicvm.uic.edu>
Newsgroups: rec.scuba
Subject:    Sportsman 300 Minisubs

   I am interested in finding information on a series of submarines that were m
anufactured  by a company called American Shipbuilding, of Lorain,OH.  I am cur
rently working on rebuilding one of these crafts and have been unable to find a
ny information on the original design of this ship.  If anyone can help me
locate any of these ships currently functioning, or a past owner of one, I woul
d appreciate it.  I have contacted several of the organizations involved with s
ubmersibles, but have not recieved any leads that have resulted in tracking dow
n information.  If anyone can be of assistance, I would appreciate it.
                          Thanks,     Matt Hunsaker
                                      123 Prospect ST.
                                      Rockford, IL 61107  U.S.A.
                                      (815) 399-1615
                                      University  of Illinois at Chicago
                                       Rockford College of Med.
                                       E-mail: u61474@uicvm.bitnet
Newsgroups: rec.scuba
From: craig@cattnts.canada.ncr.com (Craig Campbell)
Subject: Re: Information about advanced deep diving course wanted
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Distribution: usa
Date: Tue, 15 Sep 1992 13:49:32 GMT

In article <Bu09AK.3I9@apollo.hp.com> daigle@apollo.hp.com writes:
>In article <12195@cis.rand.org>, Karl_Schutz@rand.ORG (Karl Schutz) writes:

[ Discussion of deep diving, and exceeding NDL limits skipped... ]

>I'm sorry, I should have been more clear.  I meant accidentally exceeding
>the NDL.  I personally would never plan to exceed the limit.  I have seen
>the consequences first hand.  I was on a live-aboard where someone got
>hit and had to fly via Helicopter a few hundered miles to a chamber.
>That next day I joined DAN, signed up for the advanced course, and
>swore I would never be in that guy's shoes.  This is why I want to KNOW
>what to do if I get into a jam.  It will probably never happen,
>but I want to be prepared for the worst.

>Seeing what that guy went through scared the hell out of me!

I, of course, do not have the full story of the accident you witnessed, but
would like to suggest that planning NDL dives near the limit is far more
dangerous and risky than planning Decompression dives.  Decompression is
not mystical, or macho, or even difficult.  (It is BORING, cold, etc!)  The
main thing you need to do is accept the fact that you can not surface.
Whatever happens, you must deal with it in the water.  (Hence redundant
air systems, etc.)

If you want to dive deep, then I would say do it right.  By that I mean, plan
decompression dives.  This gives you enough bottom time to actually see or do
something, and a healthy safety margin to handle those little suprise
Murphy packages.  Get what training is available.  If an instructor won't 
mention decompression, then that instructor may well be unqualified for 
decompression.  Seek another.  Then, when you think you are ready, do 
PRACTICE Decompression Dives (pretend you have 30 mins deco, and then really
do it).  Once you are comfortable with hanging, then try little deco dives.
Proceed at your own comfort rate.  Don't push yourself or your buddies.

Do not skimp on equipment.  If you are going to do this, then do it
right.  If you don't make it back, that couple of hundred bucks you saved
you'll never get to spend.  Similarly, if you don't want to do this, then 
I would recommend keeping well clear of the NDLs and avoiding deep diving.

craig

(I always (almost) post my own opinions.  That is more true for this posting
 than most.)


-- 
Craig Campbell		|	These opinions are entirely the result of a 
Systems Engineer	|	small butterfly crashing into the far side
NCR Canada,		|	of the planet.  Chaos Rules.
an AT&T Company		|	I speak for no one, except, possibly, myself.
Newsgroups: rec.scuba
From: lippsjj@ucunix.san.uc.edu (John J Lipps)
Subject: underwAater camera
Organization: University of Cincinnati
Date: Mon, 14 Sep 1992 11:32:59 GMT

 For people on a budget who are interested in underwater photography, Ikelite
makes an inexpensive housing for use with diposable cameras. This is for the 
diver who just wants general pictures. You can even buy macro lens for close
ups. It takes fairly decent pictures. This is for divers like me who can't 
afford a more expensive set up! The cost is around $70.00.
Newsgroups: rec.scuba
Subject: Re: Nitrox (Was Re: Thermodynamic Decompression)
From: wall@hel4.brl.mil (Jeff Wall)
Date: 9 Sep 92 13:33:25 EST
 <1992Aug21.220829.12246@mailer.cc.fsu.edu> <pk2a69g@twilight.wpd.sgi.com>
Distribution: world
Organization: U.S. Army Human Engineering Lab  Aberdeen, MD

In article <pk2a69g@twilight.wpd.sgi.com> story@sgi.com (David (Duis) Story)
writes:
>In article <1992Aug21.220829.12246@mailer.cc.fsu.edu> mayne@cs.fsu.edu writes:
>>
>>As for claim (4) (direct benefit to the higher fraction of oxygen),
>>there are at least a couple of factors. One is that if the partial
>>pressure of O_2 is around 1 ATA or more the rate of inert gas exchange
>>is reduced. You would thus absorb more slowly at depth than theory
>>predicts. You also off-gas slower than theory predicts, but still faster
>>than if you were breathing air instead (as nitrox tables or schedules
>>using standard air tables with equivalent air depths assume). 
>
>Could you elaborate?  Why will the partial pressure of O2 affect the
>on and off-gassing of N2 save by reducing the ambient pressure of N2?

As near as I can tell he is describing the absorbtion rate in terms of the
pressure gradient.  In other words, 68% N2 partial pressure will be absorbed
slower than 80% N2 because the delta is less.   

With the ppN2 being less in nitrox than air the amount of N2 in the tissue when
it saturates (as compared to the breathing gas) will be less than air.

We now have to very favorable things happening.  Not only is the absorbtion
slowed due to a lower pressure gradient but the point at which the pressure
gradient equals zero is raised when using nitrox verses air.

I'm not sure I cleared anything up here.  In fact I might've made it worse.

Jeff Wall
wall@hel4.brl.mil

Newsgroups: rec.scuba
From: hdavies@rx.xerox.com (Hugh J.E. Davies)
Subject: Re: Delphis as carry-on
Reply-To: hdavies@rx.xerox.com
Organization: Rank Xerox Ltd.
Date: Thu, 10 Sep 1992 10:49:49 GMT

In article 28344@mksol.dseg.ti.com, pyron@skndiv.dseg.ti.com (Dillon Pyron) writes:
>
>In article <1992Sep9.100949.11840@resonex.com>, dan@resonex.com (Dan Kell) writes:
>>I travel quite a bit (too much here lately, I don't get to dive!) and have never
>>had any problems with having to demonstrate that my stuff works. But I always 
>>let the stuff go through the x-ray machine. Occasionally someone will ask what 
>>something is. Like what is the little metal box (my card case), or the thing
>>with the buttons on it. (My digital day-timer). Now going in or out of Korea
>>they take the batteries out of everything that you own. You can have a case of
>>them in your baggage but nothing in stuff you carry on. The catch here is that
>>they take your batteries at security but you can buy more at the gift shop 
>>before getting on the plane. ??? I always wonder if they don't just repackage
>>them. I have always had to turn on a laptop when I travel with one and have 
>>them hand inspect. But never when it goes through the x-ray. Maybe I don't look
>>enough like a terrorist to arouse suspicion. B-)
>>
>Hmmm.  I never let them X-ray any of my solid state stuff.  And I never walk
>magnetic media through a metal detector.
>
>Dan, you've obviously had no problems getting your various machines X-rayed. 
>Am I just paranoid, or has someone out there had experiences to justify me. 
>I'm heading to Maui for two weeks, and I have no desire to toast a pair of
>Aladins in the process.
>
>Tanks,  (I had to, okay?)
>--
>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
>


In a previous job, I spent 5 years travelling by air all over Europe with various pieces of electronic and computer equipment and magnetic media ranging from 3.5" floppies through magtapes to 300Mb exchangeable disk packs. My 3 colleagues were also doing the same sort of thing. We always allowed the security people to X-ray things, run them through the metal detector, whatever they liked. We never lost anything due to media errors, the whole time we were doing it. We lost a number of pieces of equipment du



e to confiscation by overzealous Customs officials, but that's a different matter. (So far as I'm aware, I still have an RK05 disk pack in Customs in Milan - they confiscated it and it turned out I didn't need it, so I left it there. That was 10 years ago.)
---


Regards,

Hugh.
------------------------------------------------------------------
I don't speak for Xerox, nor they for me.

Rank Xerox European Systems Centre, Welwyn Garden City, Herts., UK.
Mail to; Huge.wgc1@rx.xerox.com, whatever it says in the header.
From: mike.meyer@cutting.hou.tx.us (Mike Meyer) 
Newsgroups: rec.scuba
Subject: Diving in JAPAN
Date: 11 Sep 92 08:37:00 GMT
Distribution: world
Organization: The Cutting Edge - Houston, TX - 713-466-1525
Reply-To: mike.meyer@cutting.hou.tx.us (Mike Meyer) 

(S>   I've been living in Japan for nearly 2 years (Since December 1990)
(S>and I dove a couple of times here.  There are plenty of nice spots for
(S>scuba diving in Japan, the only problem is that it's expensive!

Figures.  8^<

(S>  If you decide on where about you'd like to go, I can give you some
(S>  more detailed info like addresses and phone numbers and all that.

Thanks - I'm still some time away from finalizing plans.  I think I wrote I
was going in July earlier, but I had a short circuit in my brain at the
time - I meant January.  I'll be visiting Kawasaki Heavy Industries then.

I've captured the information you were kind enough to send; when the trip
gets closer I'll drop you a line with more specifics.
---
 . OLX 2.2 . I've decided not to make any more decisions, I think.
                                                                                                    
Newsgroups: rec.scuba
From: lls@kings.demon.co.uk (Lady Lodge Systems)
Subject: Re: Information about advanced deep diving course wanted
Organization: Lady Lodge Systems
Date: Tue, 8 Sep 1992 09:33:26 GMT

In article <53460051@hpsgm2.sgp.hp.com> leonglaw@hpsgm2.sgp.hp.com (Lawrence LEONG) writes:
>In rec.scuba, dave@hpdstma.ptp.hp.com (Dave Waller) writes:
>
>|People who develop a shunt, or have a heart abnormality called a "patent
>|foramen ovale" (a hole between two chambers of the heart) are at significantly
>|increased risk of DCS, and should not dive.
>
>Dave, I was under the impression that this opening is present in the foetus
>('cos the foetus dosen't have to breathe as oxygenated blood comes from the
>mother).  The opening closes up in "normal" humans, but only partially closes
>in a small percentage of people.  Sorry, I can't remember the percentage.  It
>is this small percentage of people who are more at risk from repeated DCS.
         ^^^^^
              Not so small according to some sources!

I believe that Dr Peter Wilmshurst (the 'BSAC Doctor') has claimed
(following an unknown number of tests that involved injecting bubbles
into the blood stream and scanning the heart to see if they crossed
over) that potentially 1 in 5 people have a PFO!  Mind you, Wilmshurst
does seem to have a 'thing' about blaming PFO's for a lot of 'unearned'
DCS incidents.

Scary though - *If* he's right, 20% of divers are ticking away like
little gas driven time bombs :-(
-- 
Regards,
        Russell
 ---------------------------------------------------------------------------
| Russell Brown          | MAIL : russell@kings.demon.co.uk                 |
| Lady Lodge Systems     | PHONE: 0832 272224 (Home/Work it's all the same) |
 ---------------------------------------------------------------------------
Newsgroups: rec.scuba
From: mayne@pipe.cs.fsu.edu (William Mayne)
Subject: Re: How about the Oceanic Datamax?
Reply-To: mayne@cs.fsu.edu
Organization: Florida State University Computer Science Department
Date: Wed, 9 Sep 92 01:02:43 GMT

In article <pk0ln7c@twilight.wpd.sgi.com> story@sgi.com (David (Duis) Story) writes:
>[Someone wrote]
>>I used a DataMax Sport for about two years, and when the batteries started
>>getting low, it started giving depth readings that were wrong.  Of course
>>this screws up the decompression calculations, and the whole thing is 
>>no good until the batteries are replaced.  Oceanic replaced them for 
>>free.
>
>Wow, this is really scary!  How did you figure out that the depth
>readings were wrong?  Were they drastically wrong, or just
>progressively more off?  Shallow or deep, or random?  Anyone else have
>these problems?

I've had the problem with an Oceanic gauge - the one with an automatic
bottom timer which is presently not working since I'd have to send it
back to the factory and pay about $45 just to change the batteries. :-(
I believe this is called the DataMax II.

It reads about 5 feet too deep at least from 30 to 10 feet, which would
be very dangerous for decompression stops. I discovered this when I
fortunately started using a computer right after I got into decompression
diving. Luckily I didn't get bent on the few dives I did pulling 20 foot
stops at 15 and 10 foot stops at 5. At greater depths it seems to be more
accurate, or at least to match other gauges and my computer. On my last
dive it actually read less than my buddy's computer (130 versus 143 feet),
though some of the difference might be accounted for by salt versus fresh
water calibrations and he may have been a few feet deeper at max depth.
Our decompression controlled by his computer was more conservative than
my tables would have called for, even though the profile wasn't strictly
square, by the way.

I'm unfortunately without the services of my computer temporarily so this
has become an important issue for me. No shops in Tallahassee are able to
test depth gauges for accuracy or to calibrate them. At least it seems to
be consistent. This is scary to me too. Any suggestions? The questionable
Oceanic gauge is about 3 years old and hence out of warrantee.

Bill Mayne
Newsgroups: rec.scuba
From: devetzis@dexter.bellcore.com (Taso N. Devetzis)
Subject: Re: Buhlmann Tables: Source?
Followup-To: rec.scuba
Keywords: buehlmann buhlmann tables source english german french
Reply-To: devetzis@bellcore.com
Organization: Broadband Network Management Research Group (Bellcore)
Distribution: na
Date: Thu, 10 Sep 92 00:43:54 GMT

In article <pk0d0ds@twilight.wpd.sgi.com>, story@sgi.com (David (Duis) Story) writes:
|> In article <1992Aug25.184058.28470@walter.bellcore.com> devetzis@bellcore.com writes:
|> >Does anyone know of a source for Buhlmann tables suitable for
|> >carrying on dives?  The wallet-sized version that comes with
|> >the Aladin Pro is less than ideal.  I'm looking for a large,
|> >easy-to-read-when-narced table (preferably in English ;-).
|> 
|> Why not photocopy and laminate the version reproduced in John
|> Lippmann's great book, _Deeper Into Diving_?
|> 

I was about to do something similar -- print up a version on the computer
and laminate them (the Aladin Pro wallet-sized tables are not the same as
the "official" ZHL-12/16 Buehlmann, Buelmann/Hahn and derivative tables
found in most books -- they are presumably based on the six compartment
UWATEC model corresponding to the computer).  I received a great response
the other day from Luca Toldo in Switzerland explaining where to get the
UWATEC tables.  I've enclosed the message below, and will order the tables
in a week or two.  If anyone else in interested, I can combine the orders
and perhaps get a volume discount or save on shipping charges.

Oh, according to today's (9 Sept) newswire, the exchange rate is
1.2460 Sfr./$US.  Thus, 20 Sfr. is about $16.05.  Your mileage may vary.

--taso

-- 
Taso N. Devetzis
Bellcore
devetzis@bellcore.com     ...!uunet!bellcore!devetzis

=-=-=-=-=-=-=-=-=-=-= Text of e-mail message follows =-=-=-=-=-=-=-=-=-=-=

Dear collegues, the Buehlmann Tables , University of Zurich, Switzerland 1986,
are done by the company
UWATEC S.p.a
Mitteldorf 325
CH-5705 Hallwil, Switzerland.

its fax number is ... Switzerland 64 542280
its phone number are switzerland 64 543654 or switzerland 64 542940.

The official seller is

Geschaftsstelle SUSV
Militerstrasse 61
CH-3014 Bern

fax number  Switzerland 31 416192
phone number Switzerland 31 418549

For what is known to myself they are available only in german and in french,
whereas the
pocket edition  (credit-card size) is also in english.

The real-size tables are prized 20 Sfr.- the credit-card ones roughley 6-10
Sfr.

DO not forget that there exist two tables: one for diving from 0 to 700 and
another from 701 to 1500 mt !

Also I suggest to everybody is interested in the Buhlmann tables to buy (
request to the SUSV address) the manual that describe in detail how the tables
has been calculated and how to use them correctly ( available in French, German
and Italian ... no english, SORRY !) this manual also cost 20 Sfr.

If you have any problem in contacting SUSV or UWATEC, will be a pleasure for me
to help you!

best regards


Luca I.G. Toldo   FIAS **
Lugano-Sub Diving team
Switzerland

luca@czheth5a.bitnet

Newsgroups: rec.scuba
From: rols@tk1003.shearson.com (Roland King)
Subject: Bali diving
Organization: Lehman Brothers
Distribution: rec.scuba
Date: Thu, 10 Sep 1992 05:00:58 GMT


Recently sombebody posted me a great article on diving in Bali and I lost it (need to
learn how to use this computer !!) Can you please either mail it to me to rols@shearson.com
or post it to this group.

If anybody else knows any good tips about Bali diving/Dive shops especially places that run 
trips when you're staying in Nusa Dua I would be eternally grateful


			Rols