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Lee, of course You pointed out the main idea of the SAR procedure. But the nearly same system can be used for recreational diving (BTW, is ice diving actually that recreational? ;-) as well, You only have to reduce the signals to the two safety relevant ones. The linesman can control the diver by the tight line and when the diver wants to get farer out he just has to swim in the chosen direction and the linesman carefully slacks the line. Same thing vv: when the line gets a slack because the diver is coming in, the linesman has to take it in until it's tight again. To avoid missunderstanding: tight in this context means that there is still a sensation for what the diver is doing and vv, but no powerfull pulling. This actually requires some training - but I think following the KISS principle makes diving much safer. Safe diving, Chris ------------------------------------------------------------------------ Christian G. Meyer wildeshausen@t-*.de* DLRG Wildeshausen e.V. (German Lifeguard Ass.Wildeshausen) ----------------------------------------------------------------------- Lee C Kresge wrote: > > If I recall correctly, the reason that the diver has to keep the line > tight in SAR is so that he can keep himself in a predetermined search > pattern determined by the tenders/supervisors on topside. This is not > usually the case w/ recreational divers as they are usually swimming > around any which way looking at what intrests them at any particular > moment. This would leave it to the tenders to keep the line tight in > recreational ice diving. > > Lee > > On Tue, 13 Jan 1998 09:33:49 +0100 Wildeshausen@t-*.de* (Christian > Meyer) writes: > >Glenn, > > > >I wonder about so many signals to be used at ice diving. In SAR > >operation we come along with four basic signals, others are subject to > >divemaster's advice, depending on the SAR situation. The basic > >signals, > >defined by the National Accident Insurence Authority are: > > > >1 pull - emergency signal > >2 pulls - keep the line on Your left side (for search operation) > >3 pulls - keep the line on Your right side (for search operation) > >4 pulls - end of dive, going up > > > >The point is that the _diver_ has to keep the line tight, that he can > >feel direct contact to the line's man. The line's men can conduct the > >diver in all positions required, even at zero vis. > > > >OK, may be some point to discuss if the one pull emergency signal is > >missunderstandable (AFAIK the German Navy uses 1 pull for OK and a > >series of quick pulls for emrgency), but an OK signal isn't necessary > >as > >the diver has to keep the line tight. Anyway, in all cases of > >emergency > >all prepared algorythms have to be started: pulling in the line, > >sending > >the relief diver in, a.s.o. That's why there are no different stages > >of > >emergency to be signalized. > > > >Safe diving, > >Chris > ------------------------------------------------------------------------ Christian G. Meyer wildeshausen@t-*.de* DLRG Wildeshausen e.V. (German Lifeguard Ass.Wildeshausen) ----------------------------------------------------------------------- > <snip> -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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