HDTenEightyP/NetNews huggingface dataset:
From: carrie@wam.umd.edu (Carrie Lynn Leonard)
Subject: Re: Shark Hunt to begin in Hawaii
Organization: University of Maryland, College Park
Date: Wed, 18 Nov 1992 18:41:48 GMT

In article <1992Nov18.095741.16449@news.Hawaii.Edu> teshima@uhunix.uhcc.Hawaii.Edu (A. Lani Teshima) writes:
>It was just announced today by the state Dept. of Land & Natural
>Resources that the state will be actively hunting tiger sharks larger
>than 8 feet long on the island of Oahu, in areas known for tiger shark
>sightings (North Shore and west shore, primarily). This was agreed
>upon by a number of "experts" from difffernt spheres, including Jerry
>Crow from the Waikiki Aquarium.
>
I can't believe the State is finally sacntioning these kills.  Shows you
what the tourist industry can do for you.  The 'experts' need to ask themselves
what are the realisitic chances of killing the sharks responsible for the recent
attacks on the bodyboarder and surfer.  People need to share the ocean and not
dominate it.  When you dive, surf, etc, you have to accept the risks that go
along with it, IMO.


-------------------------------------------|--------------------------------
|   Carrie Leonard                         |                               |   
|   Marine-Estuarine-Environmental-Science |   Respect the Beach           |
|   University of Maryland                 |                               |
|   carrie@wam.umd.edu                     |                               |
----------------------------------------------------------------------------
From: achut@nairobi.Eng.Sun.COM (Achut Reddy)
Newsgroups: rec.scuba
Subject: December Big Island Dive Trip
Date: 24 Nov 1992 02:14:00 GMT
Organization: Sun Microsystems Inc., Mountain View, CA
Distribution: ca
NNTP-Posting-Host: nairobi
Keywords: dive trip

I'm posting this for a friend...

---------------

Any Water Sports dive shop is running a trip out to the Big Island (Kona side)
in mid December, leaving from San Francisco on the 10th (I believe).  
They have one opening left to fill, and since I can't go, I volunteered to
pass the info on to a larger audience.  The package includes round trip air
fare from San Francisco, 1 week of accomodations, a rental car and 3 days
of boat diving, all for $750.

For details contact Ginny Barry at Any Water Sports, San Jose, (408) 244-4433.

Ginny's organizing another trip in April, but she's still fighting with
the airlines to get a decent air fare.

Paul Summers
(415) 329-7871
From: Charlie_Gibbs@mindlink.bc.ca (Charlie Gibbs)
Subject: Re: how much weight do I need; by original poster
Organization: MIND LINK! - British Columbia, Canada
Date: Thu, 19 Nov 1992 22:01:59 GMT

In article <1992Nov16.165824.24501@vestek.com> marcus@vestek.com
(Mark Stephen) writes:

>before the first dive adjusting my weight belt. I managed to dive fine on
>22lbs. For the record, I am 6'2", 190lbs, wore a full 1/4" wetsuit, BC,
>with an Alum80. It was a little tricky at depths less that 20', but
>otherwise fine.

     Put on another couple of pounds and you should be about right.
You don't want to blow a safety stop some time when you really want
one...

Charlie_Gibbs@mindlink.bc.ca
Horn if you're honky.

Newsgroups: rec.scuba
From: mdf@hpuerca.atl.hp.com (Mike Fox)
Subject: Re: Any information about Cancun or Cozumel
Date: Thu, 19 Nov 1992 22:29:14 GMT
Organization: Hewlett-Packard NARC Atlanta
X-Newsreader: Tin 1.1.3 PL5

Dan Beougher (danbe@master.CNA.TEK.COM) wrote:
: 
: >  b) I was told that from time to time, the currents that run off the
: >     wall can be dangerous.  That if the conditions are right, it actually
: >     can be like flushing a toilet, ie the current is so strong running
: >     over the and down the wall that it will drag divers down even if
: >     their BC is inflated?  Anyone else heard of this?  I also was told
: >     by a local diver, not associated with Aqua Safari, that the best
: >     way to get out of this down current is to swim towards the wall.
: >     If this is true, this is the type of local dive info that is
: >     important to have.  It seems that it can cause divers to panic
: >     when you cannot stop your descent when your BC is full....
: 

My wife and I did two dives in Cozumel on our Honeymoon (we didn't have
time for any more :-) ).  The first was a drift dive over the bottom at
about 40' and the second was a wall dive at an assigned max depth of
80'.  My wife was having trouble equalizing so I was paying attention to
her and our depth on the descent.  I forgot about the current and was
not paying attention to our position.  At about 40' I looked down and
was VERY unpleasantly surprised to NOT see the bottom.  I grabbed my
wife and it took about all I had to swim against the current to get back
over the bottom (at which time I hugged a big rock and got over a slight
panic attack).  The moral to this story is that yes the currents in
Cozumel can be VERY strong and you MUST pay attention to where you are
at all times (that means position AND depth), however in my experience
(limited I'll grant) there was no downward drag.  Note that we were
descending, so we could not have been compensating with our BCs.


Mike Fox - HP Response Center
   email:     mdf@hpuerca.atl.hp.com
From: fhd@panix.com (Frank Deutschmann)
Newsgroups: rec.scuba
Subject: Re: Human bodies explode in vacuum?
Date: 23 Nov 92 19:39:07 GMT
Organization: PANIX Public Access Unix, NYC

In <By0xBy.BDA@scd.hp.com> dave@hpdstma.ptp.hp.com (Dave Waller) writes:
>The bigest difference is in the method of delivery -- in a chamber you are
>breathing air through a considerably larger orifice (your mouth) than while
>on SCUBA (the second stage of a regulator).

>In addition, despite the excellent job reg manufacturers have done in
>designing regs that have a low cracking pressure, the very nature of a demand
>regulator REQUIRES that there be a cracking pressure, and hence, this is
>something your lungs have to work against that they don't while simply
>sitting on a pressurized chamber.

>For these reasons, it is always more work to breath off a regulator than
>in a chamber that is pressurized to an equivalent depth.

>Dave Waller
>YMCA Instructor

Note that with a positive-pressure full face mask this problem is
eliminated (and you get voice back, as well as some seziure
insurance).  The difference, compared to most regulators, is quite
noticeable at even the 150FSW depth; compared to an Odin, there seems
to be little difference, probably a result of the Poseidon's serious
power-assist/venturi cracking.

As depth increases, first stage performance is probably more important
than second stage: while I would think that the second stage largely
determines cracking effort (not sure about this, but it seems logical
to me :)), the first stage will determine overall inhalation effort.
If the first stage can't deliver the volume you need at the
inter-stage pressure, you will suffer.  The effect of the first stage
can be readily seen in the Navy tests of the Poseidon regs: Poseidon
sells their regs in various combos of two first stage designs and two
second stage designs; the breathing effort is very consistent when the
same first stage is used.

-- 
-frank
(fhd@panix.com)
Newsgroups: rec.scuba
From: teshima@uhunix.uhcc.Hawaii.Edu (A. Lani Teshima)
Subject: Shark Hunt to begin in Hawaii
Organization: University of Hawaii
Date: Wed, 18 Nov 1992 09:57:41 GMT

It was just announced today by the state Dept. of Land & Natural
Resources that the state will be actively hunting tiger sharks larger
than 8 feet long on the island of Oahu, in areas known for tiger shark
sightings (North Shore and west shore, primarily). This was agreed
upon by a number of "experts" from difffernt spheres, including Jerry
Crow from the Waikiki Aquarium.

Looks like the state's finally caved in to numerous pressure groups.


--
A. Lani Teshima (teshima@uhunix.uhcc.Hawaii.edu)       o | /_/_/ "Sea Hare"
Student, UH School of Library & Information Studies     o|<0_0>--------*
A small mind is easily filled with faith.                 \=^-| |____| | 
Blessed is a mind too small for doubt.                        \_}B   \_}B
Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.scuba
Date: Mon, 16 Nov 1992 15:51:19 -0500 
From: "Peter A. Simon" <ps3p+@andrew.cmu.edu>
Subject: Re: dangerous misconception (was Re: Human bodies explode...)

Excerpts from netnews.rec.scuba: 16-Nov-92 dangerous misconception (wa..
by David Weingarten@cie.uor 
> BONG! Sorry, that is not the correct answer.  Thank you for
> playing, please try again.
>  
> Nitrogen Narcosis can occur at depths as shallow as 70-80'.
> SYMPTOMS occur generally at depths around 120'-140'.  That is,
> beyond 100' and you can have truly hazardous effects.  This is,
> of course, dependant on your personal susceptability.
>  
>
[...]>  
> Anybody diving to 200' and deeper is going to be SERIOUSLY narc'ed.
> Whether they feel panicky, euphoric or start hallucinating varies
> from person to person.  But at 300', getting narc'ed is the LEAST
> of your worries. 
>  
> Had to clear that one up quick.  :-)
>  
>                         -- David
>                         NAUI DM #D7355
>  

Here's a take from someone who has thousands of dives under his belt:

It is said that how often you dive will be a factor in at what depth and
with what severity you will be affected by nitrogen narcosis.  I have
not found this to be particulalry true.  I *always* start feeling
symptoms at 125', no matter with what frequency I am diving (e.g. twice
daily vs. once every two weeks).  What I do find is that my ability to
deal with the symptoms is affected.  The more frequently I am diving,
the better able I am to keep my trip together.

The same is true of the "common wisdom" that the rate of your descent
will be a factor.  I get narc'ed the same no matter how fast I descend,
but when the effects come on gradually (as they do with a slower ascent,
obviously), I am much better prepared to deal with it.

I have never been able to count even as high as three any deeper than
about 175'.  At depths greater than 200', AT LEAST 95% of my mental
energy is used staying alive, with only 5% left for getting anything
useful done.  Dives to that depth should NEVER be made on scuba using
compressed air.

The effects of nitrogen narcosis vary widely from person to person, and
within a person according to factors I know not what (one day I tied a
perfect bowline at 220', the next day I didn't know enough to get down
current from the work so silt wouldn't obscure what I was supposed to be
doing.

Nitrogen narcosis is not a toy!!!

> p.s. Please be sure about such things before posting them.
> 300' for N2 narcosis is a hazardous misconception.  And, as 
> much as people should always check things they read on the
> net, many people don't.

Hear, hear!

Peter Simon
NAUI Inst. #1434
Newsgroups: rec.scuba
From: adb@herboid.uucp (Anthony DeBoer)
Subject: Re: Re-loading Fuji Disposables
Organization: Linda's Dragon Memorial Society
Date: Tue, 17 Nov 1992 03:28:03 GMT

Dan Kell <dan@resonex.com> writes:
> [ primer on how to reload film ]
>... And I apologize
>for the length but this is kind of hard to explain sight unseen!

But didn't you just say we're _supposed_ to load the film sight unseen?  O-)
-- 
Anthony DeBoer   NAUI # Z8800, D5482 | Why watch TV, when Netnews provides
adb@herboid.uucp | adb@geac.com      | 100% of your daily requirement for
uunet!geac!herboid!adb               | trivia and meaningless entertainment?
Newsgroups: rec.scuba
From: story@sgi.com (David (Duis) Story)
Subject: Re: Human bodies explode in vacuum?
Organization: Silicon Graphics, Inc.
Date: Tue, 24 Nov 92 03:03:39 GMT

In article <14229@cis.rand.org> schutz@rand.ORG (Karl Schutz) writes:
>In article <1992Nov19.103112.3699@nntp.hut.fi>, s32905u@saha.hut.fi (Jouni Ilari Polkko) writes:
>> 
>> I have noticed in pressure chamber at 50 m (164ft) that breathing is 
>> heavier than in 1 AT pressure. However, I haven't noticed this during
>> my dives to 50-60 m region. Maybe this is due to additional stress and 
>> poor judgement becouse of narcosis in water diving, compared 
>> to just sitting in the chamber in air.
>
>Question: what's the difference between breathing air in a chamber
>under pressure 
>and breathing air (via scuba I assume :-) ) at an equivalent depth in water? 
>Your body absorbs nitrogen due to elevated partial pressures (Henry's Law).  
>Isn't pressure is pressure is pressure, whether water or air, or whatever, 
>induced?  So, nitrogen (I assume) narcosis should be an equivalent
> problem in a chamber ... yes/no?
>
>Is there a doctor in the house?

No need for a doctor.  The original poster gives you a big hint: he
cites stress of work at depth as a factor.  Because CO2 retention is
correlated with higher narcosis, it is reasonable to assume that a
resting calm chamber diver would be less subject to narcosis than a
working stressed openwater diver.  

If you want to learn more I suggest _The Physiology and Medicine of
Diving_ as a reference.  It's one of my bibles, along with _Diving
Medicine_.  Make sure to get the 3rd and 2nd editions, respectively.

For a briefer, easier introduction to this and other fascinating
subjects like shallow water blackout, check out _Scuba Diving in
Safety and Health_ by Chris Dueker.   

All three of those titles are available through DAN.

Cheers,

Dave Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@bent.wpd.sgi.com	              Better diving through drugs.
From: peters@apricot.co.uk (Peter Smith)
Newsgroups: rec.scuba
Subject: Nitrox in the UK
Summary: The UK situation and BSAC
Keywords: Nitrox courses uk
Date: 18 Nov 92 11:46:42 GMT
Organization: Apricot Computers Limited

At the Dive 92 exhibition recently at the NEC Birmingham, I attended
a seminar on adventurous diving, which discussed the merits of Nitrox
and enriched/mixed gas diving. This was presented by Rob Palmer of the
European Association  Of Technical Divers(EATD), which is affiliated to
the International Assoc. Of Nitrox Divers.   

The seminar was very good and put forward a good argument for the use of
mixed gas diving, but most importantly, with the emphasis on safe well
planned diving. The seminar was not designed to push Nitrox, but simply
to present the facts, both for and against, and leave the listener to make
up their own minds.  The opinion formed was that this is not for the dabbler,
but for the serious organised diver, who does not necessarily want to push
limits, but who would like to make existing diving limits safer. Undoubtedly
the type of diving on offer in the UK, could benefit by reducing the effects
of Nitrogen narcosis on many of our wreck sites.

My main reason for posting is not necessarily to get flamed on the 
subject, or stir another hornets nest, but to try and find out generally
what peoples opinions are in the UK.  Bearing in mind the usual high
standard of training offered by BSAC in the UK, and the general sensible
attitude of our divers.

Not really having had sufficient time to speak to BSAC reps on the day,
there still seems to have been no real statement made by BSAC on this
subject, well not as far as I know.  There have been unsubstantiated
rumours that BSAC are currently looking into the subject, but still with
no definite commitment.

Therefore I feel there are a number of issues here,

  	What is BSAC's stance on this subject?  

	Are they for or against? 

	Will BSAC be offering any reasonable priced courses for certification
	in line with their current quality of training?

Answers on a postcard please.


ps Are there any officials of BSAC that read this group in the UK?,
   a contact point would be useful.

Pete Smith (BSAC Advanced)

_________________________________________________________________________
Pete Smith 					      peters@apricot.co.uk
Apricot Computers Ltd R&D
Edgbaston 
Birmingham 
England
E
Newsgroups: rec.scuba
From: turgd00@DMI.USherb.CA (DAVID TURGEON)
Subject: Ear problem. advice needed
Organization: Universite de Sherbrooke -- Departement d'Informatique
Date: Wed, 18 Nov 1992 15:37:12 GMT

     I have a question. I took the certification course herer in Quebec, 
it was in a pool (12 feet) and the exam was in a lake (approx. 30 ')

     I have had serious ear problems when I was younger, and a few operations
to put "tubes" in my ears. I suffered (an still do) from Ottitis.

     My question is, Since I did the course in the pool with no problems at
all, could I pass then exam in a lake ?  My doctor seems to think it's ok...
but I'd like the opinions of people that heve been in deep.

Thanks in advance,

(E-mail replies are prefered)

Newsgroups: rec.scuba
From: dbrown@newssun.med.miami.edu (Daniel Brown)
Subject: Re: Shark Hunt to begin in Hawaii
Organization: University of Miami, School Of Medicine
Date: Thu, 19 Nov 1992 14:13:47 GMT

In article <phil.722127244@seidel> phil@seidel.ucsb.edu (Philip Papadopoulos) writes:
>teshima@uhunix.uhcc.Hawaii.Edu (A. Lani Teshima) writes:
>
>>It was just announced today by the state Dept. of Land & Natural
>>Resources that the state will be actively hunting tiger sharks larger
>>than 8 feet long on the island of Oahu, in areas known for tiger shark
>>sightings (North Shore and west shore, primarily). This was agreed
>>upon by a number of "experts" from difffernt spheres, including Jerry
>>Crow from the Waikiki Aquarium.
>
>
>>Looks like the state's finally caved in to numerous pressure groups.
>
>This truly is a sad commentary on the human race.  Just because a 
>surfer gets himself bit by a tiger shark, we're going to wipe out
>all 8+ footers. Afterall, it really is our ocean, isn't it?
>Sharks scare me as much as they scare anybody, but this is a really
>ludicrous solution.  How about putting floating dummies on surfboards
>and find out which tigers attack the bait.  Then fish and eat that particular
>shark (or sharks).  Anybody thought of figuring out WHY the sharks
>are attacking humans before we start on wholesale destruction?
>
>I recall several years ago (maybe 10-15) thousands of Hammerhead Sharks were
>coming into 3ft of water at South Padre Island, Texas.  Some were 10-12 footers
>and mean.  I don't recall any talk of extermination.  Who would of thought that
>Texans had more brain cells than Hawaiians ;).
>
>
>Phil
>

There have been references to shark attacks here, but I haven't heard 
anything about them.  I was in Hawaii from 1990 - 1991 and never heard
of a shark attack...aren't they kind of rare there?  (At least compared
to California.)  Could somebody please tell me what happened? (I don't
mean to be macabre, but were there really that many and were they really
that bad?)

I would be interested in a petition against this shark-hunt.  It seems 
pretty ludicrous to me.

Dan
dbrown@newssun.med.miami
Newsgroups: rec.scuba
From: lls@kings.demon.co.uk (Lady Lodge Systems)
Subject: Re: how much weight do I need ?
Organization: Lady Lodge Systems
Date: Sat, 14 Nov 1992 14:17:29 GMT

In article <1992Nov13.103606.5840@gserv1.dl.ac.uk> A.P.Jay@daresbury.ac.uk (A.P. Jay) writes:
>
>Reference these 'horse collar life vests'
>
>In the U.K. many a diver will be seen using one, I instruct in the University
>of Bristol Underwater club and all our 'BCs' are English buddy Pacifics with 
>'power inflator' - Costing  85 pounds new (i know what not in dollars) . 
>Unfortunately most people can only buy them with the 'emergency cylinder'
>included in the price of 150 pounds. 

I don't think that it is unfortunate that ABLJ's/STAB's/ADV'c/Horsecollars/BC's
(call them what you will!) come with a refillable air cylinder.  In fact
in our (BSAC) branch, members are not allowed to dive without them!
There are a number of very good reasons for these (in no particular order):-

    1.    Better inflation at depth than CO2 cylinders.
    2.    Controlled amount/speed of inflation.
    3.    Easier than manual inflation in times of emergency.
    4.    Faster than direct feeds (mostly applicable at the surface).
    5.    Independant inflation (still works after 1st stage failure).
    6.    Independant air source in times of great need.

Personally, I wouldn't feel happy diving without mine.

-- 
Regards,
        Russell
 ---------------------------------------------------------------------------
| Russell Brown          | MAIL : russell@kings.demon.co.uk                 |
| Lady Lodge Systems     | PHONE: 0832 272224 (Home/Work it's all the same) |
| demon.co.uk is an Internet access point for zillions of unrelated systems |
 ---------------------------------------------------------------------------
From: pstonge@trentu.ca (CMDR P.D. Keener)
Subject: More on Underwater Hockey
News-Software: VAX/VMS VNEWS 1.41    
Keywords:  Underwater Hockey
Organization: Trent University Computer Services Department
Date: Fri, 20 Nov 1992 18:50:00 GMT

Hi all!
	Just like to thanks everyone who fired stuff out u/w hockey my way 
lately.  Unfortunately, I can't seem to find the addresses in my extracted 
files.  8-(  I appoligize to everyone who wrote, for I can't get back in 
touch with you.  Please be assured thougth that I am VERY interested in this 
sport, along with the twelve or so people in the rapidly growing dive group 
here at Trent.
	 Still, for Stacy L. Kim, I think this is the answer to your note.
Trent University is a small (pop. about 4-5 000 students) university 
located approximately 150 km (about 100 mi) NE of Toronto, in the community 
of Peterborough.  A 'liberal arts and sciences' university, the school has 
many innovative programs, such as the first university in Ontario to have a 
Native Studies department (and it's a good one, I might add), as well as 
one of the first interdisciplinary environmental programs in Canada, namely 
the Environmental and Resource Studies program, which allows for extensive 
choice in academic planning.  I love it!
	The first thing noticeable at the Nassau Campus (the largest of 
Trent's 3 campuses), apart from the extremely strange architecture, is the 
bisection of campus by the Otonabee river.  If you were to look a little 
closer, you might see some rowers practicing in the early mornings.  Or you 
might just see me and Nico shooting by under the foot bridge that conects 
the facilities on both banks.
	After getting out of the water, we would make our way to the 
athletic complex and shower everything off.  As of Wednesday coming, we've 
(the Trent Dive Club) managed to get pool time on a regular basis to keep 
practicing our skills, doing things like UNDERWATER HOCKEY f'rinstance!  
8-)  Now that the administractive things ahve been taken care of, we hope 
to be trying u/w-h in the very near future.  Apparently, there is a fair 
amount of interest in the school, and from what I understand there are a 
number of teams in town who meet on a regular basis.

	See you all beneath the waves!!!  - Pete