HDTenEightyP/NetNews huggingface dataset:
From:  ()
Subject: Re: Viking Neoprene Drysuits????
Organization: University of Bergen, Norway
Date: Sat, 22 Aug 92 17:21:30 GMT

In article <OIVINDT.92Aug13194632@petrus.world>, oivindt@fagmed.uit.no (Oivind Toien) writes:
> 
> > Goodday,
> 
> > Anyone ever heard of Neoprene drysuits made by Viking?
> > When did they start making them (if they did)>Enquiring minds want to know
> 
> > The Mad Scribbler
> 
> Viking started making a model with a neoprene *hood* instead of the
> latex one - I think about 2-3 years ago. Hav'nt heard about any
> all-neoprene models.
> 
> 

I would like to give a reply to your inquiry about viking suits.
I am myself a longtime viking diver, and this summer I`ve  been working
at a senter for production/ service of neoprene diving suits(OBAN,SCANDINAVIAN
MODEL), we are also have one of Norways major senters for viking sales and
repair.
As far as I know VIKING have not produced any neoprene suits to this date.
As for now they have become a part of the swedish corporation Trelleborg,
whitch also produces the NOIKIA suit(rubber), they have recently decided to
marked a new suit made of the same material as the AQUION(nylon?).

VIKING`s production through the past decade consists of various suits, all
made of rubber. Some of them as following:

VIKING "original"  - Green, neck entry
VIKING 80x	        - Orange, shoulder zipper
VIKING 90x							  - Red, shoulder zipper
VIKING SPORT							- 2 models(pink/blue,green/blue)
VIKING PRO									- Red
VIKING HEAVY DUTY		- Red
VIKING ?(sport)				- Red
VIKING "Classic"		 - Black(sport model)

MILITARY MODELS				- Black(pro+HD models)

Viking had problems with their editions of "coloured" suits, then any
addition of pigment to the raw rubber limits the durability of the suits.
they will also be more prone to destruction combined with different pollutions
or chenmicals.

After diving for many years in a VIKING suit, I would recomend a suit of
pro or better in the generations after 80x.
The suits in black will be an advantage because of the reasons i mentioned
before.

yvind Andersen
Students diving group
University of Bergen
Norway

Newsgroups: rec.scuba
From: awpsys@ritvax.isc.rit.edu
Subject: Re: Tank thermal (de)compression question
Reply-To: awpsys@ritvax.isc.rit.edu
Organization: Rochester Institute of Technology
Date: Wed, 12 Aug 1992 23:05:15 GMT

In article <1992Aug11.144334.3439@engage.pko.dec.com>, zipp@foosw6.enet.dec.com (Eric S. Zipp) writes:
>Greetings,
>
>	Ok all you bubble blowing physicists, refresh my memory with a bit
>of basic physics 101.
>
>	Upon compressing air in a tank, the process results in the generation
>of a good bit of heat (which is why the tanks are immersed in water during
>the process).
>
>	Upon venting a volume of air from the tank, the first stage, becomes
>quite cool(cold).
>
>	What exactly is generating/absorbing the heat during these processes?
>
>Inquiring minds want to know... ;-)
>
>Thanks,
>
>Eric 
>

Simple physics.   PV=nrT is the gas law in question.

	P = pressure
	V = volume
	T = Temp

	n and r are constants that escape me for now but are not needed for
	this discussion.

	solving = for T

		T = PV/nr

	T will rise when we raise pressure and drop when you drop pressure.
	(assuming volume does not change...which we hope for with our
	tanks :) )

	This is how refrigerators work as well.  and chinook winds 

- Andy
From: ps3p+@andrew.cmu.edu (Peter A. Simon)
Newsgroups: rec.scuba
Subject: Dry suit repair question
Date: 12 Aug 92 14:47:53 GMT
Organization: Senior, Civil Engineering, Carnegie Mellon, Pittsburgh, PA

I have a back entry, 1/4" neoprene dry suit made by Fitzwright
(Canadian).  The zipper needs to be replaced.  Can anybody recommend (or
even just name) an outfit who does this kind of work?

Thanks a lot!


-peter

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*                             WATCH BACK!                           *
*                                                                   *
* DoD #10o00                 Suzuki LS650H         NAUI INST. #1434 *
*                             (for sale)                            *
*                             Honda CM400                           *
*                           (for sale, too)                         *
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From: sdodd@OES.ORST.EDU (Stephen M Dodd)
Newsgroups: rec.scuba
Subject: Re: scavenging
Date: 20 Aug 92 02:52:41 GMT
Distribution: usa
Organization: Oregon Extension Service, Oregon State University, Corvallis, Or.

In article <1992Aug16.211642.29795@nntp.uoregon.edu> davidw@cie.uoregon.edu (David Weingarten) writes:
>I'm just curious, does anybody out there regularly scavenge an area
>for lost stuff?  I went cliff diving a couple weeks ago, and lost my
>watch (it was a long fall, probably broke the pin).  
>Two weeks later, I went down with my scuba gear to look for it.
>I didn't find my watch (I suspect somebody else got it, 'cuz I made
>a pretty thorough search), but I found 3 other watches (all of them
>still work!), a lighter, an earring and 2 $20 bills.
>Needless to say, I'm thinking of making relatively regular trips to 
>this site.  Does anybody else do that sort of regular scavenging
>in their area?
>				-- David

   I've done the same kind of thing around here at boat ramps on lazy
   weekends.  I always find stuff ... but you seem to have hit a
   jackpot!  I sometimes think about a site like a boat ramp for days.
   The divemasters of our shop get gear all the time at popular sites
   like the "hump", and the fingers of the jetty.

   I also did a lot of snag diving in the 70's on the Columbia.  We
   found hundreds of items big enough to snag a mile long snag net in 35
   feet of water.  Nothing of value out there though.

   Steve
-- 
- Stephen M. Dodd, System Analyst, Oregon Extension Service
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sdodd@oes.orst.edu          Internet          Oregon State University
503-737-3550                                  Corvallis, OR 97331
From: peterson@hpl.hp.com (Chris Peterson)
Newsgroups: rec.scuba
Subject: Re: Instructor Certification...advice?
Date: 14 Aug 92 00:13:38 GMT
Organization: Hewlett-Packard Laboratories, Palo Alto, California

In article <29644@ursa.UUCP> young@ursa.UUCP (Eric Youngblood) writes:
>I have OW certification and am seriously considering going
>further...even as far as instructor.
>I would appreciate any comments / advice anyone has on this
>subject.                
>
>Thanks
>
Great!  Go for it!  It's a lot of work, but it's also very rewarding.

* "Apprentice" yourself to the *best* instructor you can find.  

Most instructors will welcome the help.  An instructor who is qualified to 
train leadership personnel would be valuable, but not always necessary at this 
point.  This will give you an opportunity to find out if you *like* teaching, 
and if you do decide to continue, assisting classes is the best preparation
available.

Most folks will start out as "teaching assistants" (TAs) who are not certified
as "leadership" types.  Leadership types (Assistant Instructors, Dive Masters,
Skin Diving Leaders, etc.) are given more responsibility and qualify for
liability insurance.

* Give yourself time to learn.  

It's not uncommon for candidates to have 4-5 years diving and teaching
experience by the time they attend an instructor training course.
-- 
Chris Peterson                                     Hewlett-Packard Laboratories
                                                    Research Computing Services
                                                              Palo Alto, CA USA 
(415) 857-6432                                              peterson@hpl.hp.com
Newsgroups: rec.scuba
From: gregr@joyce.cs.su.oz.au (Greg Ryan)
Subject: NACD - NSS CDS
Reply-To: gregr@cs.su.oz.au (Greg Ryan)
Organization: Basser Dept of Computer Science, University of Sydney, Australia
Date: Fri, 14 Aug 1992 00:02:15 GMT

I've heard of the NACD and the NSS Cave Diving Section in the US.  Can anyone
explain to me the relationship (if any) between these two organisations?
Do they have different realms of interest/authority?  Do they have separate
training standards and do they recognise each other's?

The reason I'd like to know more about this US arrangement is that the CDAA 
(Cave Diving Association of Australia) and the ASF (Australian Speleological 
Federation) are trying to come to some national agreement on cave diving.  
I imagine speleo-politics is the same all over the world, so those of you that 
are cave divers might well guess that reaching such an agreement is a difficult 
business.  I hope that there may be lessons in the US experience.

As this might be of limited interest on rec.scuba (and there isn't a 
rec.speleology) feel free to email your comments.

				Greg Ryan	gregr@cs.su.oz.au
Newsgroups: rec.scuba,bit.listserv.scuba-l,SCUBA-L@BROWNVM,SCUBA-D@BROWNVM,HYPBAR-L
From: bmacmill@epas.utoronto.ca (Bruce MacMillan)
Subject: Looking for Used Dive Computers
Organization: University of Toronto - EPAS
Date: Tue, 18 Aug 1992 19:30:03 GMT


This is a general inquiry for a source of supply of used or old stock dive
computers and other dive instrumentation of all types, models and
makes. I wish to build up a small collection of such instruments.
Could anyone make any recommendations in this regard? Thank you.
-- 
Bruce MacMillan
bmacmill@epas.utoronto.ca
Voice: (416) 599-9261	(519) 542-4572
FAX: (416) 978-8821	(519) 542-4854
From: joseph@shogun.smos.com (Joseph Crunk)
Newsgroups: rec.scuba
Subject: novice diving questions
Date: 21 Aug 92 17:13:22 GMT


 
# >I want to get my PADI C-card.  Currently I'm in northern Indiana -- but next
# >April I'll be moving to Florida.  I thought about taking a PADI class here in
# >[Indiana] -- but I question that since I don't have any interest in diving in
# >[Indiana].  I am considering taking my class after I move to FL.  Dixie Div
# >is a [5 star] PADI site, and they told me all of their grads receive a "gold
# >PADI card".

#        Great divers are taught by great instructors.  Find the
#        best instructor available; you'll probably have a lot more
#        fun too.

Are we in love with ourselves or what! :-) Great instructors and all :-)

I've gotta disagree on this one. Those divers I've personally dove with that
I would consider great ALL got that way by themselves. Not by paying someone.

I dive with folks that have nothing more than OWI certification and a
commitment to self improvement and self advancement. These are by far and
away the BEST divers!!! These are your "great divers".

The suggestion to find the best instructor possible is a good one. But, how 
does one go about doing this? How does someone *shop* for an instructor?


-Joseph Crunk

Newsgroups: rec.scuba
From: giddy@astrix.trl.OZ.AU (David Giddy)
Subject: Preserving bottles
Reply-To: giddy@astrix.trl.OZ.AU
Organization: Telecom Research Laboratories
Date: Fri, 14 Aug 1992 03:52:03 GMT

Following on from another thread on preserving iron artifacts recovered from wrecks,
I have a question in a similar vein.

A few months back, I picked up a couple of bottles on a drift dive which date from
the late 1800's. At the time, I asked a few people what to do with them and it was
suggested that I simply soak them in fresh water for about 3 months.

Unfortunately, one broke, but I have retained all the pieces and I gather it can be
glued back together. They have both been sitting in buckets of fresh water for the
last 4 months awaiting inspiration.

So what is the net.wisdom on preserving bottles that have been submerged in salt
water for a century or so ? In particular, they have a fair bit of calcified marine
growth on the outside that I would like to remove if possible.

Thanks for any help.

David.
(on leave 17/8 - 21/8 - gone skiing, it's winter over here you know!)

______________________________________________________________________________
David Giddy,			                 |    Voice: +61 3 253 6388
Telecom Research Laboratories,                   |      Fax: +61 3 253 6144
P.O. Box 249, Clayton, Victoria 3168, AUSTRALIA  |      Net: d.giddy@trl.oz.au
X400: g=david s=giddy ou=trl o=telecom prmd=telecom006 admd=telememo c=au
------------------------------------------------------------------------------

Newsgroups: rec.scuba
From: awpsys@ultb.isc.rit.edu (Andrew W. Potter)
Subject: Scuba Equiptment for sale
Originator: awpsys@ultb
Reply-To: awpsys@ritvax.isc.rit.edu ()
Organization: Rochester Institute of Technology
Date: Tue, 18 Aug 1992 13:28:46 GMT

I have the following items for sale:

   1)	two 100Cubic Foot Luxfer Aluminum 3300PSI tanks

	1 year old, (hydro good until 1996)

	Each tank includes an 8 inch boot (10 dollar value) and a
        mesh tank protector. 

	Asking 170 each or 300 for both plus shipping if necessary.
	

   2)   One Parkways Triton regulater.  (2 years old)
        (I believe it is the same as the oceanic)
	2 HP ports, 4 LP ports

	First Stage
	Triton Second stage.
	Atlas Octopus

	This was parkways top of the line reg in 1990

	Asking: 200 or best offer plus shipping if necessary.


The reason I am selling this stuff is that I am upgrading to
a Poseidon DIN setup.

If interested send mail to awpsys@ritvax.isc.rit.edu
or call (716) 359-1836

- Andy


-- 
Andrew W. Potter                             Internet: awpsys@ritvax.isc.rit.edu
Associate Director                                Bitnet:   awpsys@ritvax.BITNET
Data Center Operations & Technical Support     Information Systems and Computing
Rochester Institute of Technology, P.O 9887, Rochester NY, 14623  (716) 475-6994
Newsgroups: rec.scuba
From: sdodd@OES.ORST.EDU (Stephen M Dodd)
Subject: Re: Tank thermal (de)compression question
Keywords: heat
Organization: Oregon Extension Service, Oregon State University, Corvallis, Or.
Date: Wed, 12 Aug 1992 14:53:51 GMT

In article <1992Aug12.123005.3956@talon.ucs.orst.edu> dodd@OES.ORST.EDU (Stirling S. Dodd) writes:
>In article <1992Aug11.144334.3439@engage.pko.dec.com> zipp@foosw6.enet.dec.com (Eric S. Zipp) writes:
>>Greetings,
>>
>>	Ok all you bubble blowing physicists, refresh my memory with a bit
>>of basic physics 101.
>>
>
>Clearly there is a balance equation involving the pressure and the number of 
>moles that keeps everything in check, but I don't have my Statictical Mechanics
>text handy. So long as the change is not Adiabatic, there will be a change in
>temperature (by definition!)
>
>
>By the way, I am a Bubble Blowing Physicist (3rd year Grad Student) and I
>am doing research on the effects of underwater Bubbles on the ambient
>noise in the Ocean, so if all of you divers would mind not farting while
>I'm taking data I'd appreciate it! :{>
>

   Sorry, but I always burp my dry suit at the surface ... I'm unsure
   of the contribution of this technique to ambient noise levels.

   Steve

-- 
- Stephen M. Dodd, System Analyst, Oregon Extension Service
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sdodd@oes.orst.edu          Internet          Oregon State University
503-737-0699                                  Corvallis, OR 97331
Newsgroups: rec.scuba
From: larry@gator.rn.com (Larry Snyder)
Subject: novice diving questions
Organization: The Gator Public Access Unix Site - 219-289-3745
Date: Tue, 18 Aug 1992 12:45:28 GMT

I want to get my PADI C-card.

Currently I'm in northern Indiana -- but next April I'll be 
moving to Florida.

I thought about taking a PADI class here in IN -- but then I question
that since I have no interest in local diving where my open water dives
would take place.

I am considering taking my class after I move to FL.

Dixie Divers is a 5 start PADI site, and they told me all
of their grads receive a "gold PADI card".

The class at Dixie is $195 (it's $200 here) - and (both places)
included everything except mask, fins and snorkle (Dixie includes
a night a motel since they do their open water dives in Pompano).

Does my theory above (wait and take the class in FL where I plan
to dive verses taking the class now and not diving until moving?)

Next - mask fins and snorkle -

I would just assume buy mail order to save $$$.  The local dive shop
for example wants $139 for Apollo fins (which I like, but then I don't
have any knowledge to drawn other than reviews in Skin Diver).  I know
I want the best mask, fins and snorkle -- but I want to save $$$.  Can
I assume since I wear a size 9 1/5 show - I'll need a size 10 fin?

I would like to get my mask, fins and snorkel (maybe even a bc and reg)
before moving...

larry

-- 
Larry Snyder
larry@gator.rn.com
Newsgroups: rec.scuba,ne.forsale
From: jr@inset.com (Jim R Oldroyd)
Subject: For Sale: Beuchat Aladin Sport Dive Computer
Reply-To: "Jim R Oldroyd" <jr@onion.inset.com>
Organization: The Instruction Set, Waltham, MA, USA
Distribution: usa
Date: Tue, 18 Aug 1992 19:17:15 GMT


FOR SALE

		Beuchat Aladin Sport SCUBA Dive Computer
			*** METRIC version ***

Purchased in May 1992; used on 30-40 dives.  8 months warranty left.
Works perfectly.  Slight rubbing on plastic casing, and small scratch on
glass.

Comes complete with hose mounting, instruction book, and warranty card.

I'm selling because I'm upgrading to the Aladin Pro.

$300 + $15 if I have to ship it.

Send email, or call (617) 227 5635, if you're interested.

	-jr
From: mak@spuddy.uucp (Mark Kellaway)
Newsgroups: rec.scuba
Subject: Re: Boyancy control with drysuits
Date: 13 Aug 92 12:49:11 GMT
Organization: Spuddy's Public Usenet Domain

In article <1992Aug12.191716.11186@bmerh85.bnr.ca> scribler@bnr.ca writes:
>
>Can any of you drysuit experts explain how to handle
>boyancy control with drysuits? I have only 25 dives
>with my (shell) drysuit and have no problem with descent
         ^^^^^^^
I assume a membrane suit (ie suit material does not compress)
 
>nor with hovering but when I follow an upwards slope I
>have to contort myself to release the air every once
>in a while but I float upwards during this thus I need
>to swim down to continue along the bottom. My exhaust
>valve is at my left shoulder. When I reach about 10'
>water I generally hit the surface before I can dump out
>all my air. Well, suggestions??????
>
Do you use your BC for bouyancy or just the suit. Personally I use my
suit (I use a membrane, apparently not so easy with a neoprene suit)
for bouyancy. This means that I have to be correctly weighted close
to neutral bouyancy without any air in suit. If too heavy then more
air has to be put into the suit, which leads to the problems when rising
since there is much more air to dump and suit dumps are never as fast
as BC dumps at getting rid of air.

Another trick is to ensure that your position in water has most of the
air across the back of the shoulders, so that a small rotation brings 
the dump valve to the top and the air has a short distance to travel to
reach it. Also breathing out whilst doing this can help reduce the amount
you rise, as well as preventing burst lungs if you should be carried
upwards too fast.

I know friends with neoprene suits open a seal with their fingers to dump
large quantities of air, although I've never had to try this myself.

If you have a neoprene suit then you may be better advised to use only the
minimum of air in the suit to avoid squeeze, and your BC, which can be
dumped faster, for bouyancy.
>
>The Mad Scribbler

mak
-- 
mak@spuddy.uucp ...!uknet!axion!spuddy!mak  
Meeeeow ! Call Spud the Cat > +44 203 638780 < for free Usenet access in UK
you mean only newbies have sig's bigger than 4 lines ? oops - Aaaaa
                                                                   a 
                                                                   a
                                                                   a
                                                                   a
Newsgroups: rec.scuba
From: sdodd@OES.ORST.EDU (Stephen M Dodd)
Subject: Re: Boyancy control with drysuits
Organization: Oregon Extension Service, Oregon State University, Corvallis, Or.
Date: Tue, 18 Aug 1992 02:02:21 GMT

In article <1992Aug13.132914.24054@hellgate.utah.edu> rarobert@ursa9.cs.utah.edu (Robin Roberts) writes:
>>Do you use your BC for bouyancy or just the suit. Personally I use my
>>suit (I use a membrane, apparently not so easy with a neoprene suit)
>>for bouyancy. This means that I have to be correctly weighted close
>>to neutral bouyancy without any air in suit. If too heavy then more
>>air has to be put into the suit, which leads to the problems when rising
>>since there is much more air to dump and suit dumps are never as fast
>>as BC dumps at getting rid of air.
>
>i do not recommend using a dry suit for buoyancy control... even if you
>are also wearing a BC (i believe that you should always wear a BC with a
>dry suit, anyway)...  
>the BC is essential, for some of the reasons that are mentioned above, 
>such as the fact that a BC can be vented much faster than a dry suit.  
>IMHO, air in a dry suit is solely for the purpose of warmth and to 
>prevent squeeze.  As someone else in a previous posting suggested, 
>use the minimum amount of air in the suit that is necessary.  By using 
>less air in the suit, body positioning becomes less of an issue.  
>That is to say, it's still not a good idea to intentionally invert 
>(bye bye fins!), but it's less likely that you'll accidentally invert.  
>lots of extra air rolling around in your dry suit makes it very 
>difficult to control your positioning, etc.
>
>				rr.
>
>

  This is all a valid point of view within one school of thought.  The
  other school of thought would hold that one must adjust a dry suit all
  the time anyway over squeze and that one should dive with the lightest
  possible weight.  Large quantities of air in any bouyancy related
  equipment are to be avoided.  The easiest adjustment of such small
  quantities of air is for some best done in the dry suit.

  Anyway, much of the motivation for my earlier postings about dry suits
  and bouyancy control are related to observations of and conversations
  with professional divers who don't even use a BC when diving dry
  suits.  I have heard that european divers are known to dive this way
  as well.

  Anyway, a well weighted diver in a dry suit (light) can most easliy
  adjust bouyancy when carryining the minimum wieght.  As such the dry
  suit itself offers all the bouynacy control required.  The BC only
  offers surface flotation to them.  Such a diver only needs small
  adjustments, at one valve, over a wide range of depths for squeeze.
  It is assumed that such a diver would not casually flop over because
  of mismanagement of bouyancy in the suit.  I suppose experience has a
  lot to do with it.

  Steve


-- 
- Stephen M. Dodd, System Analyst, Oregon Extension Service
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sdodd@oes.orst.edu          Internet          Oregon State University
503-737-0699                                  Corvallis, OR 97331
Newsgroups: rec.scuba