HDTenEightyP/NetNews huggingface dataset:
From: tho@sequent.com (Torsten Homeyer)
Subject: Re: Tank sizes/capacities
Organization: Sequent Computer Systems, Inc.
Date: Thu, 17 Dec 92 15:43:02 GMT

In article <1992Dec16.202450.531@nntp.hut.fi> s32905u@saha.hut.fi (Jouni Ilari Polkko) writes:
>These 300 bar (~4500 psi) tanks are available even here in Finland,
>and we are not member of EC (yet). These tanks have been used here
>over twenty years, so I wouldn't call them recent equip. change at all.
>My 2x7x300 tanks were built 1969. They are manufactured by IWKA (Germany)

	(all statesments made below refer to steel tanks since Al tanks
	 are not common in Germany)

	Yes, same as in Germany. These tanks are also build by Draeger
	and are quiet common used by police, firebrigade and coast guard
	divers. Mostly in sizes smaller than 10 liters.
	They are not commonly used by private divers since fills
	are not commonly available and price is much to high.
	A normal 10 liter 200 bar cylinder is sold for over 400 $ US
	here in Germany.

	Commonly used (read normal) are 10 liter cylinders pumped to
	220 bar. 12 liter cylinders are very seldom, 15 liter are used
	are 10 liter cylinders pumped to
	220 bar. 12 liter cylinders are very seldom.
	15 liter tanks (called bombs here ;-) are quiet common but I
	prefer a double 8 setup since the weight sits better on your 
	back with two tanks than with one, but is much more expensive.

	You can even get 20 liter tanks but these are a pain to have on
	your back and are extremly positive when empty. But these things
	are used even in triple setups by strange guys going DEEEEEEP.


>
>Both DIN and INT valves exists in europe. DIN valves are maybe more
>common in north europe. Many valves sold today are convertible between
>DIN and INT standards.


	Normally only DIN here but you can buy INT if you want.



	Torsten.




 
-- 
Name    : Torsten Homeyer                        Phone: -49/89/420995-57
Company :       Sequent Computer Systems GmbH, Schatzbogen 56-58, 
                          8000 Muenchen 82, Germany
DOMAIN  :       tho@munsqnt.de.sequent.com
Newsgroups: rec.scuba
From: alliso@david.wheaton.edu (Bryan Allison)
Subject: Marine Biology and related studies
Organization: Wheaton College, IL
Distribution: usa
Date: Mon, 14 Dec 1992 20:20:56 GMT

	I am graduating from college in May with a Computer Science degree
and am thinking about going to grad school.  I am trying to decide
what I want to study if I go to grad school.  I have been thinking about
marine biology or something that has to do with that, but really have
no idea about what is involved in these courses or what schools even have them
in their curriculum.  If anybody knows anything about this I would be
grateful if you could tell me what you know.

	Thanks a ton.
	Bryan Allison
Newsgroups: rec.scuba
From: pak@regent.e-technik.tu-muenchen.dbp.de (Peter A Krauss)
Subject: DI VERSI VESHI TEM ?
Organization: Technical University of Munich, Germany
Date: Sat, 19 Dec 1992 17:06:42 GMT

Hello,

on a tea mug I have found these words:

  DI VERSI VESHI TEM

They are written above a diver helmet.
Below the helmet is a company name:

  Seaton Marine Services

The tea mug was produced in Britain.

What is the meaning of these words?


mfg  Peter
--
Peter A. Krauss                 Peter.A.Krauss@regent.e-technik.tu-muenchen.de
Lehrstuhl fuer                                                    Institute of
Rechnergestuetztes Entwerfen                      Electronic Design Automation
Technische Universitaet Muenchen       Technical University of Munich, Germany
From: jdale@cats.ucsc.edu (Jonathan Dale)
Newsgroups: rec.scuba
Subject: Re: Tank sizes/capacities
Date: 15 Dec 1992 06:44:31 GMT
Organization: University of California; Santa Cruz
NNTP-Posting-Host: si.ucsc.edu


In article <1992Dec15.055150.3089@lclark.edu> dmw@lclark.edu (David Weingarten) writes:
>Howdy, y'all.
>
>I'm just wondering what different size/capacity tanks are out there
>these days.  I'm afraid I haven't been keeping up with recent equip.
>changes, so I don't even really know what's out.  I have heard that
>some places in the US sell 120cf tanks, but that they are huge and
>heavy.  I've heard that some places in the EC have come up with tanks
>that hold like 140-170cf at something like 4500psi, but have not had
>this reputably confirmed.  If this is so, what are they made of?
>How much do they cost?  Can they be filled in the US?

The compressor our program has (a little 3.7 cft portable thing) goes to 3200,
but apparently is limited only by the overpressure relief valve.  I'm told
they sell the exact same compressor in Europe with a different valve, and it
goes to 4500 psi.  So I assume they have tanks that can handle it.  I'm not 
sure whether these tanks are different than ours, though....  (3000 psi tanks
get hydroed at 5000, don't they?  5/3rds of service pressure?)  Pretty 
scary, as even our wimpy tanks can rip up scuba shops pretty bad when they 
get line rust and blow up.

>Most of the instructors that I know these days use steel 92's or 94's.
>I believe these are 3500psi tanks, and have standard K-valves.  They're
>not too terribly big... manageable, at any rate.  Myself, I have an
>Aluminum 80, but as soon as I can afford it, I'd like to get something
>a little bigger.  

All my instructors use 80s or smaller, and most of them get more air time on
a 50 than I get on my 80....   They have amazingly low SCRs; mine's dropping
(from 44 to around 20) but I still can't match them.  They could probably
stay under for weeks on a 120... :)

>On a similar note, are DIN valves popular in Europe?  I've only seen
>one in my life, here in the US.  Pretty funky lookin' things.  I've
>heard that they can hold pretty incredible pressures, like 5000psi or
>something like that.  Anybody know for sure?

A salesman (heh) told me DIN valves were going to become mandatory on tanks
with over 3000 psi but I think he was full of it.  Our Nitrox tanks (I'm not
nitrox trained, and I think a $12 fill is a bit much, so I don't use 'em)
all have DIN valves, which is probably some kind of policy decision, but I
don't know.  I have seen steel 100s (3500psi) in the store with DIN valves,
slightly smaller than Al80s.  Hmmm....

>
>Thanks in advance,
>			-- David

Jonathan Dale
NAUI Adv/UCSC Research Diver
From: mayne@sync.cs.fsu.edu (William Mayne)
Subject: Re: Nitrox Diving
Reply-To: mayne@cs.fsu.edu
Organization: Florida State University Computer Science Department
Date: Wed, 16 Dec 92 20:46:21 GMT

In article <1992Dec15.225543.22976@geek.ca.geac.com> adb@geek.ca.geac.com (Anthony DeBoer) writes:
>[Discussion of valves, including isolation valves on manifolds
  being turned off...]
>Or you could have no air consumption rate at all.  Some divers of my
>acquaintance with similar rigs have the gauge on the opposite first stage
>from their primaries.  That way they won't have to give up their favorite
>second stage if they ever have an HP hose burst.

Interesting. That is the first good argument I've heard for setting
up dual regulators a certain way, i.e. the pressure gauge (if you
only have one) on one first stage rather than the other. I've also
heard of divers having a pressure gauge on each first stage, so
they still have a pressure gauge if one first stage is shut down.
Of course in an overhead environment (where most of these rigs are
used) they should be ending the dive as soon as possible after
a failure anyway. I have no doubt that still having a gauge would
be of at least some psychological benefit in such a situation.

Bill Mayne
Newsgroups: rec.scuba
From: moriarty@tc.fluke.COM (Jeff Meyer)
Subject: Seven-gill sharks (was: GIANT LUNGING SHARK!!!)
Reply-To: moriarty@tc.fluke.COM (Jeff Meyer)
Organization: The John Fluke Mfg. Co.  /a.k.a. The Gizmonics Institute/
Date: Fri, 18 Dec 1992 18:43:04 GMT

In <bill.724629425@booster> bill@cac.washington.edu (Bill Whitson) writes:
>It turned out to be about a 9 to 10 foot seven gill shark (given water
>magnification).  When we thought about it later, we really had not idea
>how it could have gotten caught in the rocks (we assume it ended up there
>sometime after it died) or what killed it, as it looked to be in pretty
>fair shape for a corpse.

I understand that the only sharks that show up in Puget Sound (outside of
dogfish, which are beautiful to encounter on a night dive) are seven-gill
sharks.  (And maybe six-gill, but I can't remember if they range into this
area.)  I believe they're generally relatively deep-water sharks; two
friends (on separate occasions) have encountered them when diving in waters
where there's a steep drop-off.  Both said the shark leisurely swam by, took
a look and moved on.

Way back in '69, National Geographic listed the seven-gill as potentially
dangerous to humans, but I think they've since said that was due to very
little information about this particular species.  Has anyone got more info
on them?  There's a gorgeous (and *big*) one living in the Montery
aquarium's big tank; divers swim by them all the time, but that's in
captivity.

                           "Gosh, I never realized
                            killing was so grounded
                            in the liberal arts."
                                                     "My dissertation on
                                                      ethics was VERY well
                                                      received."
---
                                        Moriarty, aka Jeff Meyer
INTERNET:     moriarty@tc.fluke.COM
Manual UUCP:  {uunet, uw-beaver, sun, microsoft}!fluke!moriarty
CREDO:        You gotta be Cruel to be Kind...
                 **>> Keep circulating the tapes <<**
Organization: Carnegie Mellon, Pittsburgh, PA
From: dori@ugcs.caltech.edu (Dori Levanoni)
Newsgroups: rec.scuba
Subject: Computer(s) as a log book
Date: 13 Dec 1992 03:20:21 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: molest.ugcs.caltech.edu

Well, here goes for my first post...

I was wondering, if anyone has any knowledge/experience with any computers
which can connect to a home PC (IBM clone or Mac) to download a dive
profile (assuming the computer stores depth & time data until turned-off
or manually cleared).  I remember at some point a while back reading in
a magazine of one such computer, but the name/manufacturer escapes me.

You can e-mail me with your answers, and I suppose if anyone has any 
interest in this information, I'll be glad to post it then.

Thanks in advance,

-Dori
--
Dori Levanoni PADI#88302104	   | Did you ever wonder what hood ornaments
Internet   : dori@ugcs.caltech.edu | on cars are for?  They help drivers aim
Compuserve : 76646,3433		   | better.
From: hbw@crsa.bu.edu (Howard Wellman)
Newsgroups: rec.scuba
Subject: Re: Belize?
Date: 12 Dec 92 19:06:03 GMT
Organization: Boston University
  
	I spent a couple weekends in the Keys this summer during a stint in
Belize: Stayed at Paradise Palms in Ambergris, and Colony Cottages in St Georges.
	Have fun!


Newsgroups: rec.scuba
From: tleylan@pegasus.com (Tom Leylan)
Subject: Re: Shark Attacks
Organization: Pegasus,  Honolulu
Date: Wed, 16 Dec 92 08:31:51 GMT

dan@resonex.com (Dan Kell) writes:

Paraphrasing Dan's questions for the sake of space:

>1. "single or group of sharks"
>2. "single or multiple sharks"
>3. "act aggressive"
>4. "best defense"

Dan:  If you want the real answer it is "nobody knows" except for the
single vs multiple sharks which mathematical odds alone dictate one is
better off with one shark than for instance five.  One might figure
they would be busy chatting among themselves and overlook you but it
seems farfetched.

Is the shark particularly, large, close, headed toward you ?  In clear
water, murky water ?  Are there are other sea creatures in the area
that might attract it, threaten it ?

Somebody somewhere thumped a shark on the nose and lived to tell about
it, somebody else lost his arm, another guy swam away fast and was left
alone and one more guy was chased and killed.  While I've made up the
events I think it is a fairly good sampling.

In other words, if one was in danger and one lived through it then that
is the best defense.

Even writing "sharks" is like writing "people" as if all sharks (there is
something like 130 species) act alike...

Some species leave anything as large as a man alone (for the most part)
some couldn't care less, if you move they'll bite just to see what happens
and some give fair warning through circling behaviors.

If you meet one in a cramped place (ship's hull or cavern) don't get
between the shark and the exit.

tom
From: dmk@noho.Eng.Sun.COM (David Kahn)
Newsgroups: rec.scuba
Subject: Cozumel Dive Operations?
Date: 12 Dec 1992 01:46:39 GMT
Organization: Sun Microsystems
Distribution: usa
Reply-To: dmk@noho.Eng.Sun.COM
NNTP-Posting-Host: noho

With the great recomendations I got from rec.scuba for Maui dive
operators, I thought I'd ask again, this time for Cozumel.  I've
never been there and I'll be staying at Plaza Las Glorias, Cozumel.

Thanks in advance.
-David Kahn

Newsgroups: rec.scuba
From: graff@atux01.att.com (Christopher Graff)
Subject: Re: Nitrox Diving
Summary: If your refering to special diving equipment, you can have Viton seals
	 installed on regs, 1st stage and tanks which do not corrode w/ excess O2.
Organization: AT&T Corporate Education and Training
Date: Fri, 11 Dec 1992 18:16:12 GMT

In article <teisbqs@twilight.wpd.sgi.com>, story@sgi.com (David (Duis) Story) writes:
> In article <1992Dec10.160247.11863@newssun.med.miami.edu> dbrown@newssun.med.miami.edu (Daniel Brown) writes:
> 
> Second, it is debatable whether using Enriched Air mixtures of less
> than 40% oxygen require any special equipment other than an oxygen
> meter.  There appears to be no study which contradicts NOAA's practice
> of using plain old "unclean" equipment with mixes up to 50%, though
> 40% is the usual figure.
> 
> Cheers,
> 
> David Story                        NAUI AI Z9588, PADI DM 43922, EMT


	Chris
From: dan@resonex.com (Dan Kell)
Newsgroups: rec.scuba
Subject: Re: Coco View, RoatanCoco View at Thanksgiving
Date: 15 Dec 92 16:29:50 GMT
Organization: Resonex Inc., Sunnyvale CA

My father-in-law and his neighbor both use Skin-so-soft to keep the flies
off their horses. I used it on them myself and the flies go away pretty
much instantly and don't land anymore.


-- 
Dan Kell                  
email to dan@resonex.com
"Experience is somethig you don't get until just after you meeded it most."
                       Murphys laws of computing
From: walter@optimla.aimla.com (Walter Hunt)
Newsgroups: rec.scuba
Subject: Re: missing deco stop ... re-entering
Date: 13 Dec 92 22:49:49 GMT
Organization: OptImage Interactive Services Co., L.P.

In article <sf_AhSy00iUz82bn0_@andrew.cmu.edu>, "Peter A. Simon" <ps3p+@andrew.cmu.edu> writes:

|> A friend of mine used to run a "crawfish" boat off the coast of Wales
|> (what he was catching were, I believe, lobsters configured like the
|> Calif. spiney variety, not the Maine big-claw type).  He told me that
|> crawfish divers *never* did planned decompression.  He said that if he
|> "felt a niggle" on the way up he's go down until the pain went away and
|> hang off there "for awhle" and then start up again, more slowly than
|> before.  Neither he nor his fellow boat owners would hire ex-military
|> divers because they'd insist on doing decompression according to the
|> tables and on staying within the "exceptional exposure" limits.
|> 
|> Well, time is money and these guys didn't bring up their share on their
|> dives so it wasn't worth using them (and from the diver's standpoint, it
|> wasn't worth being dead meat for a few bucks, I guess).
|> 
|> No, I don't think this is one of those stories like, "Waaall, I save up
|> my decompression for the week and do it all on Friday night, before
|> nipping off to the pub with the lads."
|> 
|> Who knows what the incident/fatality rate was!
|> 
|> Peter
|> NAUI I #1434


	Reminds me of when I was sitting at a table with a guy (FOAF) who had
just returned from a trip with a local diving-knowledgable doctor to a small
tropical country. Seems they were fishing (lobstering maybe? the details slip
away) deep on SCUBA with much the same game plan. They would drop to the bottom,
stuff their game bags till they were out of air, and then shoot to the surface
to get another tank. No decompression, no tables, no chamber within any
reasonable distance. Villagers had a habit of pucturing their eardrums so they
wouldn't even have to clear on the way down. Most of the former divers were
bent, and many of the working ones felt symtoms on a frequent basis! 

	The guys' reason for being there was to try to convince these people to
try to take a few standard precautions. I mean simple stuff, like, if you feel
pain in your limbs when ascending, stop at 20 feet or so for a couple minutes
(oh, and leave a little air to do it with).  Things like, hang the goodie bag
off a line off the boat, so when the inevitable sharks come around, you aren't
fighting them for dinner.

	In this case also, they were fighting a losing battle trying to convince
the divers to suffer a little smaller catch in exchange for an extra measure of
safety. Scary.


-- 
Walter Hunt					walter@optimla.optimage.com
OptImage Interactive Services Company, L.P.	walter@optimla.aimla.com
11040 Santa Monica Blvd., Suite #300		netcom!optimla!walter
Los Angeles, Ca. 90025				(310) 445-5718
From: keulen@csu.murdoch.edu.au (Mike van Keulen)
Newsgroups: rec.scuba
Subject: Diving qualification equivalents
Date: 14 Dec 1992 17:53:03 GMT
NNTP-Posting-Host: possum.csu.murdoch.edu.au

Hi all ...

I'm curious about what qualifications correspond to what between different
agencies ... as an example, I picked up my `C card' in 1979, through FAUI
(an Australian group), and I have recently done the Advanced Open Water
course, run by PADI.  Is this Advanced ticket equivalent to a `B card'? 
If not, what is a `B card', and then an `A card'.  I intend to carry on to
divemaster.

Another question ... what is the hierarchy of `professional' diving
qualifications, ie. to work underwater, say, on oil rigs, etc.  I'm
particularly interested in the Australian situation.

Thanks,
	Mike
--
****** Michael van Keulen ****** e-mail: keulen@possum.murdoch.edu.au ******
****** BES - Biology, Murdoch University, Murdoch WA 6150  AUSTRALIA *******
************************ "To Love is to _LIVE_!" ***************************
Newsgroups: rec.scuba
From: mayne@dup.cs.fsu.edu (William Mayne)
Subject: Re: Snorkeling Crystal River
Reply-To: mayne@cs.fsu.edu
Organization: Florida State University Computer Science Department
Date: Tue, 15 Dec 92 14:06:49 GMT

In article <1992Dec14.184640.16375@colorado.edu> jcook@mumble.cs.Colorado.EDU (Jonathan E. Cook) writes:
>In article <1992Dec14.134154.12827@mailer.cc.fsu.edu> mayne@cs.fsu.edu writes:
>>
>>Here are a couple of fun things to do: (1) Take a cyalum (sp?)
>>- chemical light stick - down to the grate which blocks access to
>>the cave. After starting it cut it open and watch the glowing
>>drops moving in the current. There is a plan to do this with a
>>large number of cyalums and divers (with lights out) on New Years
>>Eve...
>
>Pardon me, but absolutely no smilies here!  What you're doing
>is purposely polluting for your visual enjoyment!
>
>And you plan to do this with a large number of light sticks????
>What if people every day did this, then what would the place
>look like. This is a real sick idea. I hope you reconsider.

It is the management of Ginnie Springs which is planning the
New Years Eve light show in the cavern. So if you are really
worried about it contact them. As for polluting the visual
environment, this is just a special display which washes out
fairly quickly due to the high flow. I'm not sure about the
environmental correctness of dumping whatever the chemical
in those sticks is into the Santa Fe River, which is where it
all  winds up in a matter of minutes. My understanding is that
they are non-toxic. The total amount of the chemical is quite
small, too.

Bill Mayne
Newsgroups: rec.scuba
From: jose@ghia.rhein-main.de (Jose Camillo de Magalhaes)
Subject: Diving in Brazil
Date: Sat, 12 Dec 1992 18:52:59 GMT
Keywords: Did anyone hear about "Fernando de Noronha"?

Fernando de Noronha is an island in northeast Brazil, about 500 km east
from Recife (Pernambuco State). It is small with only one Hotel (former
american mititary base). Only one Diving Base has permition to operate there.
The best you dont stay in the hotel (if you dont need airconditioning)
but in one of the many fishers huts witch offer accomodation and good local
food a at very cheap prices and some of them are wonderfull located in
idylic beatches.

It is a kind of protected area (ecological park) with a lot of dolphins,
and some big fishes. I was there last time in 1991, July. You can go there
any time in the year. You will get allways clear water and very few peaple.

The island has twice a day a flight conection with Recife with a small
airplane (16 places only). No criminalistic at all. Last murder did it
in 1936 !

Water is warm so you dont need a suit and the state forbides to dive with
a knife so you dont destroy anything.

I think there is no beter diving places in Brazil.

jose
-- 
jose@ghia.rhein-main.de (Jose Camillo de Magalhaes)
Waldstrasse 26; D-W-6390 Usingen; Germany;  Tel. +49 6081 915111
From: jssong@miavx1.acs.muohio.edu
Newsgroups: rec.scuba
Subject: QUESTIONS REGARDING COZUMEL
Date: 18 Dec 92 11:08:02 GMT
Organization: Miami University Academic Computer Service"

Howdy folks.  Some friends and I were "trying"(key word) put a trip to 
Cozumel together but are overwhelmed.  So I was wondering if any of you 
experienced diver can give us any info at all regarding Cozumel.  Anything 
will do---you're past experiences---places you stayed--things you heard-and 
please if you can could you give me some numbers(phones, 
money(cost),addresses, dates,etc.)

							Thank you much,

								Jae Song
Newsgroups: rec.scuba
From: rrrucke@srv.PacBell.COM (Rod Rucker)
Subject: Re: ***I need equipment***
Organization: Pacific * Bell
Date: Mon, 14 Dec 1992 16:29:43 GMT

In article <1992Dec13.123714.8698@eskimo.com> jammer@eskimo.com (Lyle Harwood) writes:
>
>Hi, guys, I need some advice on equipment. I just became qualified, and
>would like to dive here in Seattl.e
>I've been told that to do any serious diving around the PNW, I need a
>dry
>suit.
>So, I need some advice on how & where to buy a dry suit, and what else
                                                              ^^^^^^^^^
>I'd need to start out.
 ^^^^^^^^^^^^^^^^^^^^^
About a thousand dollars.... (for a cheaper one, with good underwear).  



-- 
Rod Rucker
rrrucke@srv.PacBell.COM
PADI DM-47240

Newsgroups: rec.scuba
From: rbeck@mordordseg.ti.com (Ron Beck)
Subject: Re: missing deco stop ... re-entering
Reply-To: rbeck@mordor.dseg.ti.com
Organization: is an esoteric concept.
Date: Fri, 18 Dec 1992 18:14:06 GMT

In article <Qf=rlva00iV0A2xQ56@andrew.cmu.edu>, "Peter A. Simon" <ps3p+@andrew.cmu.edu> writes:
|> story@sgi.com (David (Duis) Story) writes:
|> 
|> >Also, on- and off-gassing and the effects of O2 toxicity have
|> >experimentally proven to be very different in wet and dry conditions.
|> 
|> Now *that's* interesting!
|> 
|> >>>2) breathe pure oxygen
|> >>
|> >>IF AVAILABLE.
|> > 
|> >It should be if you are planning decompression.  (Emphasis on
|> >"planning": Remember the 6 P's.)
|> 
|> What are the 6 P's?

	Proper
	Planning
	Prevents
	Piss
	Poor
	Performance
|> 
|> Peter Simon 
|> NAUI I #1434
|> 
|> 

-- 
---------------------------------------------------------------------------
Ronald J. Beck           | IP rbeck@mordor.dseg.ti.com |Do now what others
Member, Group Tech Staff | MaBell (214) 952-4566       |won't so you can do
Texas Instruments        |                             |later what others
McKinney, Texas          |                             |can't
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Newsgroups: rec.scuba