HDTenEightyP/NetNews huggingface dataset:
From: michael@cs.huji.ac.il (Michael Naaman)
Newsgroups: rec.scuba
Subject: Re: WHO IS EXPERIENCED
Date: 24 Dec 1992 03:27:07 -0600
Organization: UTexas Mail-to-News Gateway
NNTP-Posting-Host: cs.utexas.edu


	I think experience can be concieved as the accumulation of skills.
As was noted before, you cannot put a line and say - from here you're
experienced. But, considering diving (as the issue IS here), I think you 
can say that an experienced diver is the one who knows HIS OWN limits. On
the basic courses, you learn the general limits. A newly certified diver
will stay whithin the limits (if he does), because these are the limits he
was taught, and he partially knows why. A more experienced diver is the one
who UNDERSTAND the limits (and maybe knows what stands beyond them, theor-
etically, as taught in highr courses, or from personal expeience), and can 
refine the general and global limits, to meet his own capabillities. There
are many divers, who ignore the rules, because they think that if nothing
happend in 10 unsafe dives, nothing will happen in the 11th one. This is
exactly the OPPOSITE of what I mean. These divers are usually the worst
divers, because they don't UNDERSTAND what they are doing, and I wouldn't 
take them as a buddy. 

	Considering youself an exprienced diver is dependant on how you 
define EXPERIENCED, but (I think) this is something that comes both with 
time and with the people around you considering you as an experienced diver.

=====>   Michael  TIDF (CMAS) DM #5980796
           CS System Group, Hebrew University, Jerusalem, Israel
|==========================================================================|
| "Have a nice day!!" - My Own Private Idaho.                              |
|--------------------------------------------------------------------------|
| All opinions expressed here are mine - nothing to do with my employer.   |
|						Michael			   |
|--------------------------------------------------------------------------|
Newsgroups: rec.scuba
From: s32905u@saha.hut.fi (Jouni Ilari Polkko)
Subject: Re: Tank sizes/capacities
Organization: Helsinki University of Technology, Finland
Date: Tue, 22 Dec 1992 11:44:41 GMT

In article <1992Dec18.135214.13868@fmg.bt.co.uk> pky@fmg.bt.co.uk (Pete Young) writes:

 > A 232 bar 15l, according to my calculations, holds 136 cu ft.
 > Someone please check and confirm this!

232 x 15 = 3480 litres,  1 cu ft = 3,048**3 = 28,3 litres
so the capacity of 1x15x232 tank is 3480/28,3 = 123 cu ft

 > Twin 4 litre cylinders pumped to 300 bar
 > (approx 4350psi) , using DIN fittings and Poseidon regulators.
 >
 > We estimated that this set-up holds the same amount of air as a 232bar
 > 12.2l, but the bulk of the thing is much reduced. 

You mean of course 200 bar 12 l tank. In fact 2x4x300 set-up has slightly
less air becouse air is less ideal in 300 bar than in 200 bar.

 > Should we have something in the FAQ about capacities of US and European
 > cylinders? I'm sure it's come up before, as the girl said.

That's a good idea becouse the subject arises every now and then.

 > Pete

Jouni Polkko
jpolkko@niksula.cs.hut.fi
From: ebd@fang.att.com (Elliot B Dierksen)
Newsgroups: rec.scuba
Subject: Re: Diving in Palm Beach Area
Date: 21 Dec 92 22:10:55 GMT
Distribution: usa
Organization: AT&T Tax Systems Development, Maitland FL

In article <1992Dec21.134422.24027@eng.ufl.edu> fortner@hal.eng.ufl.edu (Dave Fortner) writes:
>
>I very highly recommend T'n'T Dive charters, they go out of Boynton
>Beach. Capt. Tony's service is the best that I have ever had and
>IMHO the dive sites out of Boynton are better than out of Palm Beach
>inlet and well worth the 15 min. drive south. Thier phone number is
>(407) 364-7399. When are you going? My wife and I have reservations
>for December 28 and 29.

I can second this recommendation. I went out with them this past friday and
Tony was as nice as ever. Visibility is still down a bit (courtesy of
Andrew), but I still had a nice time.

EBD
-- 
Elliot Dierksen   "Is that a real poncho... I mean is that a Mexican poncho or
                   is that a Sears  poncho?  Hmmm... no foolin'..." -- F. Zappa

W) e.dierksen@att.com  (407) 660-3377     H) elliot@alfred.UUCP  (407) 290-9744
Newsgroups: rec.scuba
From: nordahlc@cgsvax.claremont.edu
Subject: Diving in Southern California
Organization: The Claremont Graduate School
Date: 30 Dec 92 14:48:10 PST

Holiday Greetings fellow divers

Does anybody know where I can find scuba diving clubs around Claremont, 
California?  I am new in the US and in California and I need some ideas 
where to get equipment and where I find good dive spots in Southern 
California.

Thanks...

Claes (Sweden)
From: chalup@presto.ig.com (Michael Chalup)
Newsgroups: rec.scuba
Subject: Re: RFI:Nikon F3 lenses in Ikilite housing
Keywords: underwater, photography
Date: 29 Dec 92 02:14:58 GMT
Organization: IntelliGenetics, Inc., Mountain View, California USA

In article <1992Dec28.111508.1@sscvx1.ssc.gov> schludermann@sscvx1.ssc.gov writes:
>
> I would appreciate recomendations on lens for Nikon F3. I will be shooting
>underwater photography with an Ikilite housing. I plan to be mainly in
>fresh water. Visibility from 10-60 ft (depending on the Texas lake/river).
>I esitimate that most subjects will be with in 20' and as close as 6". What
>sort of lense(s) would be most appropriate for this application? I also
>like to dive deep (~160) and like guidance on lighting and flash units. Thanxs
>
>kris


You basically have two major choices for underwater format, macro and
wide angle photography.  For macro, probabably the most popular lens
for the Nikon F series bodies is the Nikor 55mm Micro, either the f
3.5 or 2.8.  I have the 3.5 - wonderful piece of optics.  You can
focus down to 1:2 ratio, so this will be quite close to your subject
(a few inches in front of the macro port).  For wide angle, try to get
a 20 mm Nikor, second choice being the 24 mm.  When using a wide angle
lens behind a dome port (certainly mandatory for the 20 or 24 mm)
you'll get better depth of field with the 20 mm, allowing closer-in
minimum focusing distance (the 24 has approx. 2 ft minimum focus
distance, quite annoying).  I forget if you need to use only AI or AIS
lens with the F3's normal prism; don't have my Nikon data book here at
work to check compatibilities (I have an F2).

The Ikelite housing is rated to 165 ft so you should O.K.  Much can be
said about strobes.  Having used (and abused) several makes, I've
gotten to like the Ikelite Substrobe series.  Although they do fail,
Ikelite has the best repair service I've yet found.  The Substrobe
100/150/225 has a 110 degree angle of coverage, adequate for a 20 mm
lens.  The flashes are TTL compatible, so this should work with the
F3.  UW guide numbers are reasonable, even for the slower transparency
stock that I like to shoot.  Cost / performance seems pretty good too.
A second smaller strobe (MS or MV) is a excellent addition for macro work.
The only major negative thing I can say about the Ikelite strobes is
their arm system; very awkward to use in macro mode.

			Happy Underwater Photography,
			Mike Chalup
			Internet:  chalup@presto.ig.com

Newsgroups: rec.scuba
From: pyron@skndiv.dseg.ti.com (Dillon Pyron)
Subject: Re: Divers' Environmental Survey Freshwater Bulletin
Reply-To: pyron@skndiv.dseg.ti.com
Organization: TI/DSEG VAX Support
Date: Wed, 23 Dec 1992 21:10:25 GMT


In article <199212231333.AA12629@world.std.com>, jhc@world.std.com (John HC) writes:
>We all know that diving in contaminated water is dangerous. To do it safely 
>requires specialized equipment that must be customized for the type of 
>contamination the diver will encounter. As we discovered in Walden Pond, 
>apparently clean water may contain a layer of toxicity that most divers 
>may not expect and certainly won't be equipped for.
> 
> 
>This stuff is hydrogen sulfide (H2S). It is a natural byproduct of anaerobic 
>decomposition. If it occurs in a place undisturbed by water movement, it can 
>collect and concentrate, creating hydrogen-sulfide soup. If mixed with 
>oxygenated water, it forms sulfuric acid (H2SO4). This last is not likely to 
>form in significant quantities in otherwise healthy water where H2S forms 
>because the normal buffers (salts of carbonic acid) present in freshwater 
>would prevent significant shifts in Ph.
> 
 excellent description deleted
> 
>John H-C
While doing a deep dive near the dam at Lake Whitney (South of Dallas), we went
totally black, with lights being useless.  And the stink!!!

BTW.  My family owns several gas wells in East Texas.  They are currently
plugged because they are sour and it costs too much to scrub.  The well service
company has signs around the farm, posted about 150m away.  In addition (I've
been there) the service crews carry air packs and gas detectors.  A blowout
would kill them instantly, but the detector would give a little warning, in
case of a slow leak.

Hydrogen sulfide is a very nasty gas.  It kills 10 to 15 people every year in
Texas, I'm sure the Oklahoma suffers equally.
>
--
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)     |"Pacts with the devil are not legally
pyron@skndiv.dseg.ti.com          |binding!"
PADI DM-54909                     |-Friar Tuck   _Robin Hood:The Hooded Man_
From: weiss@hatteras.cs.unc.edu (Steve Weiss)
Newsgroups: rec.scuba
Subject: Hotel recommendations on Grand Cayman
Date: 30 Dec 92 00:40:37 GMT

My wife and I are planning a trip to Grand Cayman for early March and would
like some advice on where to stay.  We know we want to be somewhere on Seven
Mile beach, but would like specific hotel recommendations.  Our priorities are:
excellent snorkeling close by (within easy walk from the hotel), relatively
quiet beach with some shade (our last trip there resulted in both of us getting
a roaring sunburn), and a place where we can cook.

Thanks for your help

Steve Weiss
UNC-CH

Newsgroups: rec.scuba
From: 0031b@pnet16.cts.com ()
Subject: Re: Diving in South Carolina
Organization: People-Net [pnet16], NCTAMS EASTPAC
Date: Thu, 31 Dec 1992 05:16:03 GMT

 I can't think of any to be quite honest with you.  Then again I lived in
Charleston for three years (Military - Navy).  I am however planning to retire
there in about 14 months and plan get the feel for what's what over there in
the world of diving ???  If you come in about a year and a half....yep !!! I
have just the place you sould check out !!!!  

   Couldn't control myself !!!!!   Sorry.  Hope you find out buds.


                                                 George

-----------------------------------------------------------------------------
DIVING HAWAII WATERS           | TO THE VICTOR GOES THE SPOILLS
AND LOVING IT !!!!!!!!!!!!!    | AND I'M SPOILED ROTTEN !!!!!!!!!!!
------------------------------------------------------------------------------

UUCP: humu!nctams1!pnet16!0031b
ARPA: humu!nctams1!pnet16!0031b@nosc.mil
INET: 0031b@pnet16.cts.com
Newsgroups: rec.scuba
From: spindler@monarch.rsmas.miami.edu (todd spindler)
Subject: Re: Shark Attacks
Organization: University of Miami/RSMAS
Date: Mon, 21 Dec 92 20:04:21 GMT

In article <cfAYLxu00UhW84Eco1@andrew.cmu.edu>, "Peter A. Simon" <ps3p+@andrew.cmu.edu> writes:
|> leej@sgi.com (Lee Jones) writes:
|> 
|> >On the other hand, there is another
|> >(urban legend?) claim that echos of gunfire from WWII are still rattling 
|> >around in the deepest parts of the ocean occasionally confusing whales 
|> >communicating over the miles.
|> 
|> What do you mean "urban legend?"  Of course that's true!  Haven't you heard it?
|> 
|> Peter Simon
|> NAUI I #1434

And I was so sure that those deep booming noises were caused by whale flatulence!  8-)

-----

Todd Spindler
TSpindler@rsmas.miami.edu		Rosenstiel School of Marine and Atmospheric Science
					University of Miami
From: awright@gssec.bt.co.uk (Alan Wright)
Newsgroups: rec.scuba
Subject: Re: Shark Attacks
Date: 21 Dec 92 13:50:29 GMT
Organization: BT, Software Engineering Centre, Glasgow, UK

In article <1gomkeINNdng@fido.asd.sgi.com>, leej@sgi.com (Lee Jones) writes:
|> 
|> >2.  Prior to WWII, shark attacks on swimmers was unheard of. Sharks were
|> >turned into "man-eaters" because of the easy pickings due to the carnage
|> >of war.  True?
|> 
|> It seems unlikely that 300 million years of dietary evolution would be 
|> changed by a few years of free sailor-buffets in a couple of (relatively
|> isolated) locations around the world.
|>
|> Regards, Lee

Some sharks are smart and do learn where to get an easy meal. I have
a video by Mike deGruy which shows an island somewhere in the Pacific
where Tiger sharks turn up once a year for the breeding of some birds.

According to the film Tigers are never seen there except for those few
weeks and during that time they ignore their normal prey while they feed
on the birds.

Their method is also interesting. If a bird's initial flight ends up in
the sea it gets bitten, but not swallowed and no flesh is removed. The
shark then goes away and returns and bites again until the bird either
drowns or dies of the wounds. Then the shark takes the bird underwater
to feed on it.

If anyone is interested I will look out the details.

-- Alan
--------------------------------------------
awright@gssec.bt.co.uk (Alan Wright)
BT, Software Engineering Centre, Glasgow, UK
--------------------------------------------
From: wally@hpdml45.boi.hp.com (Wally Overton)
Newsgroups: rec.scuba
Subject: Re: RFI:Nikon F3 lenses in Ikilite housing
Date: 29 Dec 92 16:11:15 GMT
Article-I.D.: boi.C013Mr.H0M
Organization: Hewlett-Packard / Boise, Idaho
X-Newsreader: TIN [version 1.1 PL8]

schludermann@sscvx1.ssc.gov (schludermann@sscvx1.ssc.gov) wrote:

:  I would appreciate recomendations on lens for Nikon F3. I will be shooting
: underwater photography with an Ikilite housing. I plan to be mainly in
: fresh water. Visibility from 10-60 ft (depending on the Texas lake/river).
: I esitimate that most subjects will be with in 20' and as close as 6". What
: sort of lense(s) would be most appropriate for this application? I also
: like to dive deep (~160) and like guidance on lighting and flash units. Thanxs

: kris

--
I would second the advice in the previous response ( 55 macro et al ), and
throw in a few more ideas.  Another lens for your consideration is the 
Tamron 90mm, f2.5 macro.  It is rated along with the best, and is sharper
than most at intermediate distances.  It provides a hair more light for focusing
and is "long" enough to get skitish creatures to fill more of the frame.
Another useful addition is an aftermarket focusing screen such as the
"Brightview".  It adds considerabily to focusing ease in limited underwater
light.
I also like the Ikelite strobes, though I use the "Ai" model along with a
Morris slave strobe for fill.  The Morris comes from Helix @ $39.95, a real
low price for underwater gear.

wally
 ////////   Wally Overton, wally@hpdml45.boi.hp.com, (208) 323-2819   \\\\\\\\
 \\\\\\\\      Disk Memory Division, Hewlett-Packard, Boise, ID       ////////
From: awright@gssec.bt.co.uk (Alan Wright)
Newsgroups: rec.scuba
Subject: Trapped Killer Whales
Date: 23 Dec 92 18:55:22 GMT
Organization: BT, Software Engineering Centre, Glasgow, UK

General sea-life interest story.

At present there are 7 Killer Whales trapped in a narrow inlet
on the Shetlands. The islanders had thought about herding them
back out to sea with boats but have decided to wait a couple of
weeks until after New Year when the water should be higher.

They are easily seen from the road-side at Catfirth Voe on
Mainland. I spoke to a reporter from the Shetland News Agency,
who had been out on a boat to see them, and she said that the
whales seemed to be feeding okay which was one of the factors
considered when they decided to leave them there.

If anyone is considering diving with the whales they should
contact the Shetland News Agency. If I get a chance I intend
going up to photograph them between Christmas and New Year

-- Alan.
--------------------------------------------
awright@gssec.bt.co.uk (Alan Wright)
BT, Software Engineering Centre, Glasgow, UK
--------------------------------------------
Newsgroups: rec.scuba
From: schludermann@sscvx1.ssc.gov
Subject: RFI:Nikon F3 lenses in Ikilite housing
Organization: Superconducting Super Collider Laboratory
Date: Mon, 28 Dec 1992 17:15:08 GMT


 I would appreciate recomendations on lens for Nikon F3. I will be shooting
underwater photography with an Ikilite housing. I plan to be mainly in
fresh water. Visibility from 10-60 ft (depending on the Texas lake/river).
I esitimate that most subjects will be with in 20' and as close as 6". What
sort of lense(s) would be most appropriate for this application? I also
like to dive deep (~160) and like guidance on lighting and flash units. Thanxs

kris
Newsgroups: rec.scuba
From: rhg@NCoast.ORG (Rich Garrett)
Subject: Gear Needed & Anyone Been to Costa Rica?
Organization: North Coast Public Access *NIX, Cleveland, OH
Distribution: usa
Date: Sat, 2 Jan 1993 22:37:33 GMT


Good Day!  

1)  I searched all over today for a Scuba Magizine where I could review and 
order a few new items for my trip thatI am planning on going on later in January
to Costa Rica.  To net it out, I couldn't find one here in Cleveland Ohio (Now
that shouldn't be too unsual given it is winter).  

Can anyone suggest places to call for well priced, quality gear?  A catalogue
would be appreciated ASAP.

2)  We are leaving for Costa Rica later this month to skin dive off
the western coast.  If there is anyone who has also been there, I'd love any
information that you might have.  I have heard that tanks are difficult to have 
refilled - is that so?  Can they be rented there?  

Thanks for reading this any any assistance you might like to provide.  I do 
feel a little dumb regarding #1 above but I did not remember seeing a FAQ
in some time.

Regards!  Rich Garrett

-- 

Richard H. Garrett                                           rhg@ncoast.ORG
NCoast Public Access UN*X - (216) 582-2441,Telebit Worldblazer , login: makeuser
4 lines, shell access granted at time of login.
Newsgroups: rec.scuba
From: rg@crayamid.cray.com (Rich Garrett)
Subject: Wanted Info on Belize Agressor
Nntp-Posting-Host-[nntpd-26957]: atoll.navo.navy.mil
Reply-To: rg@crayamid.cray.com (Rich Garrett)
Organization: Cray Research, Inc.
Date: Wed, 23 Dec 1992 16:12:17 GMT

I have am going to spend a week on the belize agressor, and would 
appreciated any info about the boat.  

thanks,


             OOo O                Rich Garrett
             O oO                 rg@crayamid.cray.com
              o                   I get cranky when my nitrogen level
       _____ o o		  gets too low.
      (_/-\_)..
     ===(O).
Newsgroups: rec.scuba
From: dpeders1@cc.swarthmore.edu (Daniel Pedersen)
Subject: Info requested for purchasing dive computer
Reply-To: dpeders1@cc.swarthmore.edu (Daniel Pedersen)
Organization: Swarthmore College
Date: Mon, 28 Dec 1992 04:42:34 GMT

Hello y'all out there in diving land (or sea):

My brother, who was just certified asked me to get him a diving computer,
with decompression tables and the like.  I have never heard of such a thing
before, and I am asking you for information about getting one.

I live in the Philadelphia area, I have read the FAQ and I will check Peter
Yee's archives I would appreciate any info on models, what sorts of things I
should look for, or look out for, what would be a good price/performance
value, what is the absolute best model, and what would be a good source to
buy one - either retail or mail-order.

email is prefferable (sp?) but I will check the net once in a while.  I will
post a summary to this group when I get enough answers.

Many thanks in advance, and happy diving! (I'm jealous)

-->Daniel Pedersen  -  Keren's Daddy		(215)543-8961
	dpeders1@cc.swarthmore.edu	pedersen@engin.swarthmore.edu
======================================================================
Highway sign on I-10, AZ: "Federal Prison - Do Not Pick Up Hitch-Hikers"
	50 yards later: "Campground	Next Right"
"Why do you kill people?"   -   "I am a terminator."  [Terminator 2]

Newsgroups: rec.scuba
From: ddozier@daled.unet.com (Dale Dozier)
Subject: Dive Buddy Needed for Xmas Eve
Organization: Network Equipment Technologies, Inc.
Distribution: ba
Date: Mon, 21 Dec 1992 15:58:23 GMT

I have an itch to go diving but my wife can't go so I'm looking
for a dive buddy for christmas eve. I was looking to leave the bay 
area thursday morning and and go to Monterey. I have 2 years
experience , 78 dives, a truck and all my own equipment. We could
meet somewhere local and I'll drive. Give me a call or send
mail and we'll work out the details.

Home: 510-489-8543
Work: 415-780-5479

-Dale Dozier
From: pnegus@rugby.Corp.Sun.COM (Paul Negus)
Newsgroups: rec.scuba
Subject: Re: WHO IS AN EXPERIENCED DIVER ???
Date: 23 Dec 1992 18:58:29 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: pnegus@rugby.Corp.Sun.COM
NNTP-Posting-Host: rugby.corp.sun.com

In article 7646@nctams1.uucp, 0031b@pnet16.cts.com (Rmcs Falcone) writes:
> 
>   Can anyone tell me at what point is a diver considered "EXPERIENCED"??
> Is it the number or dives ?? The level of qualification ??? Just what is it
> that allows a diver to consider themselves "Experienced" ?? I was reading an
> artical in "Dive Training" and it made me think....is there such a point in
> one's diving experience that you can qualify yourself as being an
> "EXPERIENCED" diver ???
> 
>                                           George.
> --------------------------------------------------------------------------
> Diving the Hawaii waters     | To the Vistor...goes the spoils
> and loving it !!!!!          | and I'm spoiled rotten !!!
> --------------------------------------------------------------------------
> 
> UUCP: humu!nctams1!pnet16!0031b
> ARPA: humu!nctams1!pnet16!0031b@nosc.mil
> INET: 0031b@pnet16.cts.com


Never consider yourself experienced, but always learning.  You have experiences that contribute to learning.

....Paul

All thoughts are unattributable.