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To: A.APPLEYARD@fs*.mt*.um*.ac*.uk*
Subject: Re: ultrasound
From: "chris.mayer@an*.co*" <chris.mayer@an*.co*>
Cc: techdiver@opal.com
Cc: mayer@sp*.an*.co*
Date: Tue, 12 Jul 94 11:14:59 EDT
On Tue, 12 Jul 1994 12:40:07 GMT, A.APPLEYARD wrote:

> In the 1970's someone told me of a part of the south coast of
> England where there is a big Ministry of Defence area along the coast, but no
> (at least, no generally-known) official restrictions on public sea usage
> offshore from it, where there were reports of "diver deaths, mass deaths of
> fish, and divers coming back and reporting strange [underwater] sonic noises".
> Powerful ultrasound can be lethal, 

Yes, and so are powerful lasers!  Also, X-ray guns are very damaging!  


On Tue, 12 Jul 1994 10:25:00 GMT, A.APPLEYARD wrote:

>   (1) (What is the `WWW server'?) 
World Wide Web.  Please look through news.answers to find a FAQ on WWW
stuff.  You might also check for "mosaic", which is WWW browser software.

>   I read recently that incredibly tight restrictions on sport diving in Greece
> that have lasted for many years after some cases of looting of ancient wrecks
> in the 1960's, have been slackened at last after much pressure from scuba
> diving organizations etc. (Anyone got more information on this?) 

Where did you read it?  References...

> I read that
> diving in Greece is controlled by, of all things, their Antiquities Board: I
> can understand their respect for things Ancient Greek, but Ancient Greece
> ended 2000 years ago, and there must be a limit to what the long-dead stop the
> living from using! (Not only in diving: I pity modern Greek school children
> having to learn to spell their modern Greek ancient-Greek-fashion, with e.g. 6
> ways of spelling the `i' sound, and an initial `h'-sound symbol that has been
> silent for 2000 years!) Ref the previous paragraph, I saw recently a UK TV
> program that described a tradition of local illegal (= without permit) sport
> scuba diving on Crete (a Greek island); if they see antiquities, they leave
> them alone and say nothing. That way the antiquities are indeed left alone;
> but archaeology is deprived of good free extra eyes to find underwater sites.

Yes, that is what one club publically states.  However, how many wreck
divers on vacation in Crete would be unable to resist just taking a few
items from a two or three thousand year old ship?  So you are arguing
that archeological sites need not be protected.  

I'm sure that modern greek school children have at least as much pity
for you having to learn the English language, by the way.  

>   In Yugoslavia it was worse, with even snorkelling banned in some areas, it
> was suspected to hide local naval places training Palestinian and other
> terrorists as frogmen, another threat that sport divers don't need. 

Yes, I was attacked by a ruthless "Palestinian terrorist frogmen" last
week...  actually, I guess that that's kind of redundant, saying
"Palestinian terrorist".  Better not one of those suckers sneak up on
you underwater.  

Did you know in the United States snorkelling is banned in some areas???
Swimming too!  No kidding!

> Plus
> Serbian military `control-ism' (which the Bosnians know too well of on land).
> Now that Yugoslavia has gone, now is the time to pressure Slovenia and Croatia
> (who seem to have inherited the greater part of the Yugoslavian coast) to, in
> the name of their newly-won freedom, give freedom for sport scuba diving to
> dive at will and organize its own affairs.

Is this post about diving our your one sided political view?

>   In Israel I can understand some restrictions, such as (except in one place)
> no night diving allowed, so that any frogman-type sonar echo can be treated as
> a likely terrorist (see the previous paragraph). They let divers run the body
> that controls diving, not some hard naval commandant like in Spain.

Oh, it *is* about your one sided political view...  since you state that
you "understand" this restriction in Israel (but not elsewhere).

>   Luckily in UK there are no such laws, and any `no diving' areas to protect
> particular wrecks are kept as small as possible.  But on the south coast of
> England in 1991 I was told of cases of UK naval divers attacking sport divers
> who they found underwater while on operations in non-naval sea areas. (But my
> informant told me that Royal Marines divers leave sport divers alone.)

Was your informant a Royal Marine?  

> (Not
> only in diving: I read of cases of sport rock climbers being shot at by troops
> who came across them when practising cliff-climbing assault on the same rock
> face.) We don't need `naval-ism' getting in control of civilian diving.

Please, if you're going to make statements which look like they belong in
the Enquirer or the New York Post (sensational tabloids), please at
least back them up with references!  Or else try putting them on
"alt.conspiracy".

>   In the 1970's I read of something alarming in France: French diving police
> trained to dive on unauthorized sport divers (e.g. in a forbidden area, or
> spearfishing) and to force them to surface, e.g. by turning their air off at
> depth. I hope that that won't be copied by all sorts of official bodies, and
> even by inshore shellfish fishermen now that many of them can scuba dive.

It seems like a fairly good method of getting divers who are knowingly
breaking the law to the surface.  Since they are illegally spearfishing,
what would you recommend?  Using spears on them?  Lethal ultrasound?

>   I heard recently of an incredibly massive armed police action to seize all
> diving gear on a sport diving centre at Kusadasi in Turkey, merely because its
> permit has lapsed a week or two during a change of ownership. We don't need
> that. 

Huh???  I'm sorry, but without references and details this information
is ridiculous.  

> I read in the 1970's of a sport scuba diving club in Turkey: the article
> said that its members were `listed as members of the frogman branch of the
> Turkish Navy', as if those clubs were a cheap way of training action frogmen
> and not for any proper freedom of the sea: I don't know whether it is so now.

So you have a point here???

>   We don't need this sort of thing. We want free use of the sea.

It's always good to sum up with an all encompassing maxim.  Here's mine:
"Always give references."

/C

---------------------------------
Christopher Mayer
chris.mayer@an*.co*
Analog Devices Inc.  617-461-3013
Norwood, MA

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