DANGERS OF THE DEPTH text: Sebastian Näslund. Some research by Bill Strömberg Updated december-2006
Sebastien Murat has done many deep dives, as deep as 180+ rumor has it. His method in some dives has been attaching weights to his ankles that can be ditched. A safety line (fishingline type) to his wrist that is reeled in from the surface.
Herbert Nitsch has added a new angle on no limit. He solves his equalization by having an extra mouthfill outside his body. After starting his descent he puts some of his air in a small balloon, air which he below RV can use for equalization. This has taken him to 183 meters (an Aida world record) and even more in training (203 meters). His world record was a quick dive of 3.15.
But there are many less successful dives:
The 24 year old frenchman Cyril Isoardi died after a No-limit dive to 128. In ten days progression in 1995 he went from 112,118,122. On his last dive ever he left the sled and was not on it when it was able to be retrieved to the surface. His body was lost. He did this dive with only one person as back-up (in a boat). There is a small monument at 26 meters depth (outside a headland of Nice harbour).
Benjamin Franz (Belgium) got severe DCS and/or stroke and has been disabled for a long time (though improving). He had been doing repetetive sled dives to depth. Some claim the stroke was not dive related, other emphasise that it would never had happened if he hadn´t been diving like he did.
Patrick Musimu did 209 meters in training. His progression was fast and led to some time in a decrompession chamber.
Pippin ( Ferreras ) has been doing many deep dives in No-limit style. He has had many blackouts and strokes of DCS, he has even been in cardiac arrest. More than one of his scuba safetydivers has died during his projects.
A swedish Freediver (Mikael Hurtig) got stuck at 92 meters of depth. The hose from the single scubatank had slipped out of the liftbag. A Trimix diver saved the situation The freediver had a BO at surface.
Tom Sietas suffered a similar thing at 122 meters. He stuck at 122 meters and the whole dive surpassed 4 minutes.
Carlos Coste:"Every day I feel better. I already can speak perfectly and coordinate my movements. I can walk, although I have to make an effort to keep my balance. But I am sure I will recover. I want to go back to the sea as soon as possible. This sport is my life and I will never stop freediving".
There are rumours of other less successful freedives venturing into the zone of DCS.
Maybe its time for Aida international to regulate not only safety around the attempts but also put demands on training proceedures.
- O2 deco stops
Aidaboard declares 1 oct (one month after this was firts published) -After reports of recent experiences by athletes in the disciplines VW (Variable Weight) and NL (No Limits), the AIDA International Executive Board decided to develop a protocol/guideline for VW/NL/Sleddiving disciplines. This guideline will be developed by a few boardmembers, in close cooperation with a few VW/NL experts and medical professionals and will be presented to the Assembly as soon as possible. In the meantime, the AIDA International Executive Board will be reluctant excepting NL or VW record attempts.