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<chris.mayer@an*.co*> wrote on Tue 12 Jul 94 11:14:59 EDT (Subject: Re: ultrasound):- >> Powerful ultrasound can be lethal, > Yes, and so are powerful lasers! Also, X-ray guns are very damaging I am not talking space fiction: lethal underwater ultrasound exists NOW, and can be completely silent to human ears. Powerful lasers underwater would usually be merely an expensive way of boiling a bit of water. >> I read recently that ... restrictions on sport diving in Greece ... have been slackened at last after much pressure from scuba diving organizations > Where did you read it? References... In a recent copy of a UK sport diving magazine. >> ... diving in Greece is controlled by, of all things, their Antiquities Board ... 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. Yes, I know, but archaeology was made for man, not man for archaeology. Other people also want to use the sea. <There must be a limit to what the dead keep the living from using>, else eventually everything will be stored in memory of the past and no room for the living to do anything. >> 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. Information from a UK diving magazine some years ago. > 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. What I was referring to is: that due to that, sport diving was hindered in Yugoslavia to train them, and in Israel due to needs to defend against them. > Did you know in the United States snorkelling is banned in some areas??? Swimming too! No kidding! Yes, I know, in busy harbours and waterways, polluted areas, drinking water reservoirs, security areas, etc and similar where justifiable. But the abovementioned `some areas' in Yugoslavia included much good diving coastline. >> ... Now that Yugoslavia has gone, now is the time to pressure Slovenia and Croatia ... 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? No. I was only hoping that a change of rule there might mean a better deal for sport divers there. Hope often comes from a change of rulers, regardless of who the change is from or to. >> 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... > Oh, it *is* about your one sided political view... since you state that you "understand" this restriction in Israel (but not elsewhere). > Sorry, I wasn't trying to be political. Sorry. I was only saying why they don't (or didn't) allow night diving. In Israel, terrorist frogmen were a real risk. In Spain etc etc they are not. `Circumstances alter cases.' Israel seems to have passed as few restrictions as it dare in the circumstances: some other nations so placed would have wiped out sport diving over large areas. Sorry. >> ... 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? No, he was an ordinary sport diver instructor who lived in the srea. >> 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 ... OK in principle. But I don't want them forcing all sorts of divers to surface suddenly risking bends or embolisms just to interrogate them, and 95% of those thus treated turn out to be not the men that he was after. >> 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 ... When I was in diving in the Red Sea in March 1994, I met someone who has been at Kusadasi and had seen the incident referred to and had been in it.
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