HDTenEightyP/NetNews huggingface dataset:
From: petolino@joe.Eng.Sun.COM (Joe Petolino)
Newsgroups: rec.scuba
Subject: Re: Tanks and GA aircraft
Date: 6 Apr 92 22:19:11 GMT
Organization: Sun Microsystems, Mt. View, Ca.
NNTP-Posting-Host: joe

>>      There's no problem at all.  Think of it in terms of relative
>> pressure.  Even at 10,000 feet the ambient pressure has only gone
>> down by about 5 psi.  A tank that's filled to 3000 psi won't even
>> notice the difference.

>I'm surprised to hear this. I thought there were regulations about flying
>with diving cylinders because technically they are pressure vessels.
>Perhaps this is only a concern when you are flying in a jet at 35,000+ feet?

Yes, there are regulations about flying with pressurized cylinders, but I
don't think it's because they're likely to explode from the pressure
change.  Here are some better explanations:

    1) If a tank fails for whatever reason, the consequences are a lot
	worse in an airplane than they would be on the ground.

    2) There *is* a real danger of a tank exploding in a plane crash (either
	from the impact or from the ensuing fire), and that would complicate
	any rescue attempts.

It's analogous to the regulations about carrying explosives on bridges.

To elaborate on the first comment above, an airplane would have to completely
leave the atmosphere to put the same pressure stress on a tank as you do when
you ascend from 32 fsw to the surface.

-Joe
Newsgroups: rec.scuba

njs@scifi.uucp (Nicholas J. Simicich) writes:
> In article <1992Apr10.151407.19841@cattnts> craig@cattnts (Craig Campbell) writes:
> 
> >Minor nit, but isn't a tank hydro'd at 5/3 's (66% above) of its
> >working pressure?
> 
> Depends on the tank.  Old steel tanks and AL tanks are hydroed at
> 5/3rds of working pressure.  Genesis steel tanks are hydroed at 50%
> over working pressure.

Ahhh.... I stand corrected. Thanks for updating us on the different
specs for the Genesis tanks, Nick.

Dave Waller
YMCA Instructor
From: Bruce_Dunn@mindlink.bc.ca (Bruce Dunn)
Newsgroups: rec.scuba
Subject: Re: Portable compressors.
Date: 9 Apr 92 00:01:46 GMT
Organization: MIND LINK! - British Columbia, Canada
Distribution: world

> tjfeue@bb1t.monsanto.com writes:
> 
> For fills on remote trips, I'm modifying my utility trailer to have
> 3 HP storage cylinders on a cascade under a false floor.  An industrial
> gas place thinks that they can get me large tanks that take 4500psi,
> but they are *expensive*.  I plan to use it when I go to the Upper
> Peninsula of Michigan to do some UW prospecting in Lake Superior
> this summer.  I think that I can finally make this #%$*&#&$% sport
> to *PAY ME* for a change!!!!!!   :-)

     You might wish to look into cylinders made for storing compressed natural
gas for vehicle use.  In some areas with good natural gas supplies (such as
British Columbia where I live), there is a substantial industry which fits
vehicles with large high pressure tanks for storing natural gas.  Since these
cylinders are a production item made in large quantities, they are relatively
cheap.  I don't know however about the legality of filling them with air rather
than methane.

--
Bruce Dunn    Vancouver, Canada   Bruce_Dunn@mindlink.bc.ca
Newsgroups: rec.scuba
From: craig@cattnts (Craig Campbell)
Subject: Re: Mail-order vs. Dive Shop thread - another question
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Date: Tue, 14 Apr 1992 13:56:09 GMT

In article <1992Apr7.170148.1275@nynexst.com> miani@ibm1.uucp (Rich Miani) writes:
>I've seen good points on both sides of this debate, and though I lean towards
>the dive-shopper's point of view, I'm not Rockefeller either :-)

>Does anybody have a mail order place that they've dealt with that they
>would consider fair/reliable ? If you reply, would you mention 
>whether or not you had to return merchandise to them and how that
>situation was handled .... I would like to check out this debate first hand
>since I am thinking about buying some new equipment.

>Thanks,
>Rich

Divers Supply in Macon Ga. will do phone orders and ship products.  They are
no 'Mail order', but rather a dive shop who will ship stuff.  They have a 
fine selection of technical equipment.  Their number is (912) 474-6790.

I have only purchased from the store in person so far, but would consider
having things shipped where the $$$ difference is compelling.  I was very
pleased with their expertese and helpfulness.  (And no I have no affiliation
with them.)


-- 
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.
From: remonen@tkk.tele.fi (Matti Remonen)
Newsgroups: rec.scuba
Subject: Re: Why this is such an enjoyable newsgroup
Date: 3 Apr 92 05:30:08 GMT
Distribution: rec
Organization: Telecom Finland, Helsinki

sracer@cecelia.media.mit.edu (Andy Hong (Hey Dude)) writes:

> Just wanted to mention that of all the newsgroups I subscribe to...
> rec.scuba makes the most enjoyable reading.

> It seems to have the highest ratio of informative posts to posts that are
> pure flames or personal attacks.  And compared to groups like
> rec.audio.pro, comp.dsp, or rec.skiing, you don't see too many comments
> like:

>   o  No, [*sshole], you're totally wrong.
>   o  Just do your math [1+1=3].
>   o  I've been [brag]ing for [5n, when n is the actual number] years now.
>   o  Obviously, you don't know what you're talking about, because I've
>      been [eating my own sh*t] since I was born.

You should try bit.listserv.scuba-l :-)

> Divers are just swell.

> --andy (who also doesn't understand why people leave c-card numbers in
>        there dot-sigs)  NAUI OWII #S58776, DAN #73127, ZT Maximus Skate-
>        Boarding Park #B286, Madd Mike's Snowboard Claim Check #K77549,
>        Band-Aid Glow in the Dark Bandages Code #4606, Toshiba 4-Meg SIMM
>        #40372, Thayer School of Engineering Digital Systems Lab Kit
>        #LES-11, AAA Nevada/Utah Road Map (Retail Value $3.00) #513892.

Matti Remonen
(I'm afraid that my quota of codes is still shipping)
Newsgroups: rec.scuba
From: craig@cattnts (Craig Campbell)
Subject: Re: Octopus Ergonomics
Organization: AT&T / NCR Canada Ltd., Toronto, Canada
Date: Tue, 14 Apr 1992 13:17:53 GMT

In article <1992Apr8.200654.6566@icon.com> malc@icon.com (Malcolm Weir) writes:
>In article <1992Apr7.051333.18580@scifi.uucp> njs@scifi.uucp (Nicholas J. Simicich) writes:
>>In article <1992Mar31.155837.25325@hubcap.clemson.edu>
>>mjs@hubcap.clemson.edu (M. J. Saltzman) writes:

>It was this configuration that prompted Scubapro to produce the A.I.R.II
>system, which in turn lead to the MAJOR split between Scubapro and NASDS
>(before NASDS & Scubapro were VERY strongly allied).  The alleged problem
>was that the AIR II required that the AB give up their primary, which was
>totally contrary to NASDS procedures.  As a direct result of the argument,
>NASDS has refused to back down on on their "Never Pass your Primary" stance.

OK, I just can't resist...wouldn't it make the most sense to train a diver
to deal with loosing either regulator?  For many reasons, your buddy may need
air as quickly as possible.  That translates to you loosing your primary
(you gave it, he took it, whatever...).  This should not be a problem for
you...you just grab your other reg.  Now, when you buddy has calmed a bit,
the two of you can calmly sort out who should have which reg.  (Longer hose
ending up with buddy.)

My octopus has a 7ft hose, which is coiled up beside one of my tanks.  I 
don't want it on my primary, because the extra length could catch on things.
Also, my primary second stage is 'better' than the octopus.  For these reasons,
my buddy will end up with the octopus.  (Just one man's config.)

>>Nick Simicich - uunet!bywater!scifi!njs - njs@watson.ibm.com


-- 
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.
From: edd@gvlf2.gvl.unisys.com (Ed Dougherty)
Subject: Re: Nassau area dive trip recommendations
Organization: Unisys Defense Systems, Great Valley Labs, Paoli, Pa
Date: Thu, 9 Apr 1992 16:15:55 GMT

I leave Sunday for Nassau.  I'd appreciate recommendations for
dive operators in the Nassau area especially if you have knowledge
of any with handicapped dive experience.

I will (attempt) to check the archives but would value a recent
personal experience.

Ed Dougherty
From: ddt@mdi.gwinnett.com (Dusit Tansathein)
Newsgroups: rec.scuba
Subject: Re: aqualand
Date: 6 Apr 92 05:31:14 GMT
Distribution: usa
Organization: Majure Data Inc., Roswell GA

jay.hack@execnet.com (jay hack) writes:

>My wife recently bought me an Aqualand diving watch, which has one
>annoying problem which I cannot solve and which is not addressed in the
>manual.  The watch automatically beeps twice on the hour, every hour,
>day and night.  It's convenient only when I forget where I put the
>watch, but is quite disconcerting when it goes off just as I am dozing
>off to sleep at night.  I don't know how this started and the manual
>doesn't tell me how to stop it.  Any ideas?  Also, I haven't used the
>watch for diving yet but I put it on the bottom of a six foot deep pool
>at the timer wasn't triggered.  Should it be?  The manual seems to says
>yes.

To turn off the CHIME function, press 'select' and 'set' simultaneously
in the normal time display mode (look at p.37 of your manual).
For the second question, if you did not activate the dive meter system
(press 'mode' until the watch changes to dive mode), the (bottom) timer
as well as other functions will not operate (see p.29 of manual).

I bought mine 3 years ago and I used it on every dives, the depth and
dive time alarm work great!.   I 'm sure you 'll enjoy it too. 

Happy bubbles,

Duke, The (SCSI) Terminator
ddt@mdi.gwinnett.com (Dusit Tansathein)
(404) 587-3054
-- 

ddt@mdi.gwinnett.com (Dusit Tansathein)
(404) 587-3054
Newsgroups: rec.scuba
From: leej@sgi.com (Lee Jones)
Subject: Re: where are Manta rays 
Organization: Silicon Graphics, Inc.
Date: Thu, 9 Apr 1992 18:33:48 GMT


New location for mantas: I saw one this past Monday (4/6/92) at about
100' on the backside of Molokini crater off Maui.  Caveat: Divemaster said
that was the first one she's seen there in over a year :-)

Further details on Maui diving to follow in a later post.
From: sastpw@scuba.unx.sas.com (Tom Weber)
Newsgroups: rec.scuba
Subject: Re: Scuba Lessons in Peekskill, NY
Date: 14 Apr 92 20:38:05 GMT
Organization: SAS Institute Inc.
Originator: sastpw@scuba.unx.sas.com
X-Bytes: 2543

Well, somehow I didn't get the original article (advertisement) on this,
unless it is from a long time ago. But I do remember a thread on this
issue a while back. I would have to agree with Dave on this one. I sure
as hell don't want to start sorting through articles, searching for the
ones that are interesting and informative, and weeding out ads and junk
like that.

I currently read almost every article that goes through rec.scuba. The
thread about why r.s is such a good group to read was right. I have
abandoned most other news groups such as rec.motorcycles.* (which I am
just as interested in) because, in a word, they suck. There is just too
much junk being posted and not enough relevant, informative, thought
provoking (sp?), ... articles.

I like the current domain of article context and would prefer not to
have advertisement in this group. Of course, that is just my opinion,
and, of course, I am NOT a physician (sorry, couldn't resist).

Anyway, since I am posting I may as well ask a question. Of course it's
not a new topic, and I have seen some discussion on it in the past, but
here goes. I have the oportunity to mate on a boat starting this summer
(in a couple of weeks). I have my PADI advanced open water, and will
become a dive master if I decide to do this. I will be one of two mates
on a ~20 passenger boat. The other mate is one of my instructors. We
wreck dive off the North Carolina coast. Anyway, the question I have is
posed to those who are at least DMs. I am not necessarily interested in
becoming an instructor, at least not in the near future. I am weighing
the pros and cons and would like any input on things I may not be aware
of. My main pro is the opprtunity to get wet for free almost every
weekend. A boat ride costs $80 - $100 depending on where and when you
go. Of course, I realize that most of my time will be helping the others
on/off the boat, setting/releasing the anchor, ..., and not personal
diving, but since I'm addicted to diving, even that would still be fun.
My main cons are being responsible for the paying divers, as well as
the money for courses (Rescue Diver / Dive Master). There is also the
time involved in helping my instructors teach their courses, which isn't
a problem.

Of the issues I am aware of, I know how I feel. I would like any input
on other responsibilities/pros/cons ... of being a DM that I haven't
thought of.

Thanks for any help, and sorry this got so long.

                                                 Tom

Tom Weber at sastpw@scuba.unx.sas.com
From: stetner@bwdlh525.BNR.CA (Douglas Stetner)
Newsgroups: rec.scuba
Subject: Re: eyeglasses or contacts
Date: 8 Apr 92 17:24:07 GMT
Reply-To: stetner@bnr.ca
Distribution: world
Organization: Bell Northern Research


In article <1992Apr2.130538.2261@resonex.com>, dan@resonex.com (Dan
Kell) writes:
|> mask in the pool with contacts and go from there. Any contact wearer got
|> an input?
|> 

I always dive with contacts, but I water ski with them too, so I am
not very scared of having them pop out.  I find that if my mask floods
(or I wipe out when skiing) that my eyes close automaticly before
I lose my contacts.  If I broke my mask, I would be sight less with
a perscription mask anyway.

I do find contacts a bit of a hassle, and do not wear them everyday
anymore, but for diving I like them.  If I did lose them though
I would probably go for the glue in lenses (cheaper than new contacts
as I need the 'toric' lenses).

Doug
------------------------------------------------------------------------
---------
Douglas G. Stetner, 4Y22  |  Bell-Northern Research  | ESN 6+39+3+8396
      stetner@bnr.ca      |  P.O. Box 3511, Stn. C   | (613) 763-8396  (work)
 My opinions are my own.  |  Ottawa, ON, CANADA      | (613) 828-6321  (home)
From: duis@sgi.com (David Duis)
Newsgroups: rec.scuba
Subject: Saba Trip almost full...
Keywords: experienced divers only trip saba M/V Carribean Explorer
Date: 8 Apr 92 04:38:38 GMT
Distribution: usa
Organization: Silicon Graphics, Inc.


Thought folks might be interested to know that the Saba trip has only
two spots left.  Here are some details, feel free to e-mail me for
more.  

Cheers,

Dave Duis                        NAUI AI Z9588, PADI DM 43922, EMT
duis@bent.esd.sgi.com		  Better diving through computers.


Hello!

I've chartered the top-quality liveaboard M/V Caribbean Explorer to
visit the tiny island of Saba, July 4th-11th.  If you're a good diver
and want to visit an island that has truly rewarding diving, come to
Saba.  DON'T waste another vacation with a cattle-boat trip to Cozumel
or Grand Cayman, come to Saba and experience the untouched pinnacles
of her sheer volcanic scenery.

To give you an idea how pristine the diving is, I spent over 20 hours
underwater there and saw only four pieces of damaged coral.  Saba's
marine park was one of the first in the Caribbean.  As a result, the
area is truly untouched, and the fish are wonderfully curious.  The
landscape is amazing: the island is so steep that there are no
beaches.  This kind of amazing topography continues in the awesome
offshore pinnacles rising up from 3000 feet.

Definitely among the top 3 dive spots in the Caribbean, with pinnacles
to blow your mind.

The final price is $2085 ($1295 boat + $790 air) including: R/T
airfare, 8 days & 7 nights on this top-of-the-line custom liveaboard,
unlimited diving for 6 days, food, drinks, air, and more air....

Again, no novices allowed!  Won't that be a nice change from your last
dive trip?  This will make the diving run much more smoothly, get us
to the best dive sites, and ensure that everyone has a full repertoire
of fish stories to tell.

This will be the trip to top all other Caribbean trips.  Don't miss it!

Any questions?  Want more information?  Drop me an e-mail note.


Talk to you soon,

Dave Duis                        NAUI AI Z9588, PADI DM 43922, EMT
duis@bent.esd.sgi.com		  Better diving through computers.
From: Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs)
Newsgroups: rec.scuba
Subject: Re: Tanks and GA aircraft
Date: 14 Apr 92 00:13:31 GMT
Article-I.D.: mindlink.11412
Organization: MIND LINK! - British Columbia, Canada

In article <1992Apr11.051751.14297@scifi.uucp> njs@scifi.uucp
(Nicholas J. Simicich) writes:

>In article <1992Apr10.151407.19841@cattnts> craig@cattnts (Craig Campbell)
>writes:
>
>>Minor nit, but isn't a tank hydro'd at 5/3 's (66% above) of its
>>working pressure?
>
>Depends on the tank.  Old steel tanks and AL tanks are hydroed at
>5/3rds of working pressure.  Genesis steel tanks are hydroed at 50%
>over working pressure.

     Thanks for the correction.  Got to keep our nits straight.  :-)

Charlie_Gibbs@mindlink.bc.ca
"I'm cursed with hair from HELL!"  -- Night Court
Newsgroups: rec.scuba
From: njs@scifi.uucp (Nicholas J. Simicich)
Subject: Re: info on IDC's
Organization: Nick Simicich, Peekskill, NY
Date: Thu, 9 Apr 1992 13:26:24 GMT

In article <1992Apr9.054700.20973@willamette.edu> mmyers@willamette.edu (Mike Myers) writes:
>Just a side note to this:  What is the northern most IDC?  (in the US)
>I hear all about the ones in southern California and Florida but are there 
>any in colder climes?  I suppose there isn't quite as large a pool of
>poor students for the prospective instructors to instruct outside of
>these near tropical locations...sigh...

You need to specify which agency you are interested in.  In NAUI, all
scheduled Instructor courses are in Sources, and in SSI, all of them
are in the SSI Bulletin.  I'd bet that for PADI, you could, at the
minimum, call your local branch manager and get a list of courses in
your area.  I don't remember, offhand, if they are in the Undersea
Journal (which you'll start getting when you make Divemaster, they
didn't give it out to non-leadership people) or not.



-- 
Nick Simicich - uunet!bywater!scifi!njs - njs@watson.ibm.com
SSI #AOWI 3958, HSA 318, NAUI #14065
Join the movement ---  turn 'to bush' into a verb.
From: Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs)
Newsgroups: rec.scuba
Subject: Re: Tanks and GA aircraft
Date: 14 Apr 92 00:12:56 GMT
Article-I.D.: mindlink.11411
Organization: MIND LINK! - British Columbia, Canada

In article <13169@bwdls58.bnr.ca> stetner@bwdlh525.BNR.CA
(Douglas Stetner) writes:

>In article <11222@mindlink.bc.ca>, Charlie_Gibbs@mindlink.bc.ca (Charlie
>Gibbs) writes:

>|> bent.  In the absence of tables that specifically deal with flying
>|> after diving (I don't know of any but I'd love to find one) I'd

>Try the BSAC 88 tables, they will handle flying after diving.

     Thanks for the note.  I'll look for them.

Charlie_Gibbs@mindlink.bc.ca
Diving is more fun.  Fish aren't into politics.
From: adb@herboid.uucp (Anthony DeBoer)
Newsgroups: rec.scuba
Subject: Re: C-card #'s in .sig's
Date: 13 Apr 92 03:18:14 GMT
Organization: Linda's Dragon Memorial Society

In article <1992Apr9.132136.17997@scifi.uucp> njs@scifi.uucp (Nicholas J. Simicich) writes:
> [ prior discussion of instructor number format ]
>... Naui numbers with 5 digits or less and no
>prefixing letter are instructors (except that numbers prefixed with A-
>are probably Australian instructors, and there are probably other such
>exceptions).

I'm not so sure on that score.  My original C-Card, from Cairns, Australia,
shows my instructor's number was just plain "09149", from NAUI Down Under.
My own card number is a bit of a mouthful, as "AUQ17568".  They must be
using the plain "A" prefix for something, though, or AI's wouldn't have a
"Z" prefix.

>...  I get the feeling that NAUI
>has added their last 8000 instructors much more quickly than they
>added their first 6000.

NAUI Canada and NAUI U.S. hand out unique numbers, so there won't be two
instructors with the same number, but in order to do this they've taken to
allocating blocks of numbers.  An instructor I work with who was certified
down in Florida received a number a couple of thousand higher than the
current Canadian sequence.  Also, the most recent NAUI Canada newsletter
shows a considerable and sudden jump in the numbers given to recently
certified Divemasters (if I'm not mistaken; it might have been the
Instructors or the AI's, but I'm in the middle of packing for a house
move).  Normally, the numbers handed out in Canada are consecutive.

If this really massively matters to anybody, drop me E-mail, and I could
phone the NAUI Canada Executive Director; our HQ is just down the street.
-- 
Anthony DeBoer   NAUI # Z8800, D5482 | Why watch TV, when Netnews provides
adb@herboid.uucp | adeboer@geac.com  | 100% of your daily requirement for
uunet!geac!!herboid!adb              | trivia and meaningless entertainment?
Newsgroups: rec.scuba
From: jcv26@cas.org (Jon Vander Hill)
Subject: Re: Buying used equip Gooddeal or stupid????
Organization: Chemical Abstracts Service, Columbus, Ohio, USA
Date: Fri, 10 Apr 1992 17:03:37 GMT

grs01168@stat.appstate.edu writes:

   Ok heres my question: As far as buying used equipment is it really
   stupid or a great way to get a good deal?  As far as tanks I under
   stand they should have certain tests done yearly and then every 5
   years, but what about things like regulators.  If you were to get
   one used and then find out (before using it to dive) that it was
   not functioning properly are these thing repaired for a reasonable
   cost or so costly to repair that you throw it away and buy another
   one?  Anyway you prob. understand basicly what I'm asking?  If
   there is a source out there for this info. point the way or if you
   have an answer feel free to Email.

For cylinders:  be sure they're in hydro (the 5 year test) and have
had a recent visual inspection (the 1 year test) or that you have the
provision to have these done before buying.  It's useless if it
can't pass these tests.

For regs:  be sure they're still under warranty (e.g. Sherwood
renews the warranty as long as you take the unit
in for inspection once a year) or have the option to get the
unit inspected by a qualified technition.

Most other stuff:  be sure it's in working condition; see if you can
take it on a test dive.

If you're just getting into the sport, I'd shy away from used
equipment unless you're getting help from someone who knows what
to look for and that you trust.  This is life support gear after all.

Jon Vander Hill
jon@cas.org
PADI DM, NACD & NSS-CDS Full Cave

--
Jon Vander Hill
jon@cas.org
PADI DM, NACD & NSS-CDS Full Cave
Newsgroups: rec.scuba