Poll on Herberts NL Dive

[Billextreme]

Just a short poll to see the opinion on how deep Herbert will go in his No Limit dive this time, 2007, in Spetses - Greece.

/B

 

[Waterysmile]

I'm (very) optimistic.

 

[BennyB]

I think it'll be bang on 214m. That's what I believe his target depth is and i'm not sure if he'd vary this on a spur of the moment decision.

Go Herbert!

 

[Stavros]

One thing I have heard from Herbert and Alex S (and I am sure Bill will agree with me) is that it is quite hard to get accurate rope measurement for such great depths...so I think it is quite possible to be going for 200 and end up doing 210...Just think about it - a sled going down a 200m wet rope with 3m/s with a 40kg weight+the diver's weight on it coming to a sudden stop at the plate (ok not the plate - the tennis ball dumpers)... how much would you say the rope would stretch even if it is prestretched and is weighed properly...

So I am not putting in a vote on this one - I think the difference between 190 200 and 210 is not really great once you are down there (we are talking about an extra 6 secs/10m return at the rates these guys are talking about)

I just wish Herbert and all the team the best of luck.

Cheers Stavros

 

[Billextreme]

Max +/- 1ft, hope that will be accurate enough.

/B

 

[Billextreme]

For Herbert's dive we will use special D9's - tested and calibrated by SUUNTO down to 250m, and with sample rate of 3 times per second.

....and Suunto is also going to help us with extremely accurate computers for deeper diving than that when or if we need this in the future.

/B

 

[Stavros]

Hi Bill, is the length of the rope (depth) going to be established by sending the sled down first on its own with a D9? or in the traditional rope measuring way?
Cheers Stavros

 

[Billextreme]

Hi Stav...

AIDA Judges verify the depth of the dive by measuring the length of the descent line. AIDA International does NOT accept the reading from a dive computer as verification of depth. Dive computers are only used by AIDA to give an estimate of the dive profile.

/B

 

[Jorg]

You would think that dive computers, especially from the last generation, are more accurate then measuring the rope. You have to take 214 meters of rope, make it completely wet, actually really really wet. Then hang on one end of the rope the weight that will be on the line. Problem is that when you take in account the weight of the rope itself, hanging it in the water, it CAN be quite different from measuring it on the dry land in a horizontal way. Even if you have very good rope that stretches minimally, you can still see meters of difference in this setup.

Bill, will AIDA change this rule sometime in the future?

 

[Billextreme]

AIDA will maybe look at this option in the future.

The thing is that we don't have any dive computers that, by them self, adjust and take in to consideration where on our planet the dive take place, the temperatur and the salinity ...all at the same time.

Example:

214m in fresh water @ 4 °C: is only 212m(695,5ft) = 20.72 Atm

214m in sea water @ 4 °C: is 217.4m(713,3ft) = 21.25 Atm

Soo... 214m on the computer is rarely 214m in distance. (702,1ft)

AND we measuring the distance like they did in the 50'ies and 60'ies.

regards
/B

ps... some dive computers are better than others, of course... but they have to be a lot better before we start to use them to verify the depth.

 

[osusim]

I wish good luck to Herbert in any case.

Can we ask Suunto to make for regular D9 normal freediving user interface? I want to have opportunity of changing the GAUGE mode to the FREEDIVING mode directly or via cable!

 

[Herbert]

Bill!

Have fun wrapping the rope around the island.

Cheers every one,

Herb

 

[Waterysmile]

Bill!

Have fun wrapping the rope around the island.

Cheers every one,

Herb

Good luck and stay safe and healthy.

I noticed you didn't vote! Good not to tempt fate, perhaps.

 

[drea]

i think herbert will do fantastically. whatever he will achieve will be mad. feels a bit silly to have a poll about it i must say, but i guess some find it useful
go herb go!!

 

[DeepThought]

The thing is that we don't have any dive computers that, by them self, adjust and take in to consideration where on our planet the dive take place, the temperatur and the salinity ...all at the same time.

I thought Eric Fattah's F1/X1 does that.

 

[XabreTooth]

People seems to be a lot more confident with the abilities of Herbert Nitsch, than they were two years ago with Patrick Musimu:

http://forums.deeperblue.net/variable-no-limits/60688-200m-deep-down.html?highlight=musimu+poll

 

[Stavros]

People seems to be a lot more confident with the abilities of Herbert Nitsch, than they were two years ago with Patrick Musimu:

http://forums.deeperblue.net/variable-no-limits/60688-200m-deep-down.html?highlight=musimu+poll

Hi XabreTooth - I guess people are a lot more confident in Herbert's abilities because:
He has the current AIDA NLT world record with 183m
He has done 200m in training in the past according to info from his training (I know its unofficial but so was Patric's dive)
He has had a very good year with world records in CWT 111m and STA 9:04

So all in all there is a lot of indications that allow people to believe Herbert can do the dive (which was not the case in Patric Musimu's dive)

Cheers Stavros

PS. The above is not meant to diminish Patric Musimu's dive it is just answering your question