Computer, Has anyone seen this?

[Asteve]

From my Cressi Leonardo dive computer user manual. Page 9


WARNING:Currently,no validated
scientific literature allows to dive more than
twice a day for periods of one or more weeks
with out the risk of decompression sickness.
For your own safety, it is important to avoid
diving for more than two times a day.
A rest of at least 2 hours between two subsequent
dives is mandatory. The next/repetitive
dive shall be shallower and its minimum
duration shall be 15 minutes.


Has anyone seen this before?


If I am reading this correctly. If I take a week long liveaboard trip,I can only do 2 dive a day and the 2^ndafter a 2 hour SI, The next dive has to be longer then 15 Minutes. ( I think they mean the 2nd dive could only be for a max of 15 minutes)


Any comments?

 

[BRT]

Get a different dive computer. That one is too dangerous.

 

[dmaziuk]

...dive ... with out the risk of decompression sickness.

They should've told you at the certificate place that the above is not possible full stop. The difference between "no risk" and "one in million bazillion" is very important in legalese, for one.

PS. Somewhere among my Leonardo's papers (or maybe it's in something downloaded from the website) it also says if you go below the rec. limit while in dive mode, the warranty will expire and the computer should be thrown out. I hope they don't mean it literally switches to "game over" mode: it seems to me if a poor shmuck hits 141' through accident and/or stupidity, he could really use something to help him get up safely. Cressi getting sued by his next of kin afterwards is of course another story.

 

[RJP]

For your own safety, it is important to avoid
diving for more than two times a day.
A rest of at least 2 hours between two subsequent
dives is mandatory. The next/repetitive
dive shall be shallower and its minimum
duration shall be 15 minutes.

Wish I had known that before my buddy and I did 32 dives in 5.5 days of diving in Bonaire a few years ago.

 

[Agility]

the crucial part is "no validated scientific literature"
decompression theory is a bit hazy, and repetitive diving has not been investigated as thouroughly as single dives.

kudos for reading the manual :cool2:

 

[diver2005]

ive done three dives a day for 7 consecutive days with less then 2 hours surface interval!! no decompression sickness!! i think the manual is just trying to be super safe so in case of any legal action they're covered.

 

[Hatul]

Most if not all manuals have some legal warning at least that you can still can bent following the computer. The recreational computers warn to stay out of deco and that the deco mode is to allow diver to ascend to exit deco mode. But this is the worst case. Even the conservative Suunto advise surface interval not less than one hour.

I've read enough about this computer to make me want to stay away from it. You don't need extra anxiety from your dive computer.

 

[underH2Oman]

I have not seen this but do not need too.
The reality is that dive computers and dive tables are not a guarantee of a DCS free dive, and probably never will. While designed to reduce the risk they can not eliminate it. There are more variables than either can take into account for each diver. (breathing rate, body temperature, fitness level are some examples that many computers due not consider) Think about the calculations happening and one variable is a little off of what the computer is programmed for, the risk of DCS is slightly higher than calculated. Extrapolate this effect over several days of diving and it is possible that the risk of DCS is very high even if the computer is telling you it is not.

We like to think of them as totally accurate and they are based on their limited abilities. After all they are just a calculator of a pre-programmed mathematical formula.

 

[Jim Lapenta]

It does bring up a good point though. When divers are taught using computers only why do they get the impression that if they follow it they will be ok? One reason is that they absolutely refuse to acknowledge in a meaningful way that this is a high risk activity.