Bounce Diving

[Aquanautchuck]

Lamont in another thread mentioned bounce diving after diving, and I read that link. My question is what about bounce diving as the first dive. I have done a couple over the years as my first dive, bounced down to a certain depth and come up and finished the dive making sure to do all my safety stops. [3-5min at 1/2 my max depth then the same again with a final safety stop at 15-18'] I usually do not dive again for many hours and my dive computer at no time went into deco. I know now that they say going down slow is better than fast as I was taught years ago. If anybody has any in-site into this I would appreciate it.

C

 

[HowieDean]

We do them from time to time.....Did 3 on air last December....
200 - 250 - 301 feet...........

Wouldn't in any way shape or form recomend that anybody should do them....

If you think about the total time "decent + bottom + accent" that you are way past the no deco limits it just doesn't sound very safe.......

The last one I did was to 301 ft - stayed there for about a minute - my computer showed a ceililng of 20 ft for 10 minutes "Ocianic Data Max" - what we actually did was profile off at 40ft for 30 minutes, then about 20 minutes at 40 feet computer showed no ceiling - then profiled at 20 feet for 20 minutes and did a 15 minute safety stop at 15 ft...................

My buddy had a head ache all day - and even though I didn't think I was Narced at all I did notice that for about 4 hours after the dive I had trouble answering even simple questions...........................

 

[Cacia]

hoping someone comments on his gas physics of a bounce.....just to corroborate it for me.

Those bounce dives seem to be a regional pastime down there. (Gulf Coast) I dove with a tech diver today from who competes in spearfishing tourneys and bounces to 200 ft on air off those oil rigs. Crazy.

 

[Diver Dennis]

:jump013:

 

[Bretagus]

Could somebody link to the thread in question?

I think you only count descent + actual, because once you start to rise you are off-gassing, but I have read no literature on the subject.

 

[Diver Dennis]

Howie, what kind of tank set up did you use doing a bounce dive to 300' on air?

 

[CD_in_Chitown]

I think you only count descent + actual, because once you start to rise you are off-gassing, but I have read no literature on the subject.

There's factors to take into consideration, off-gassing starts somewhere on the way up but probably not when "you start to rise" at those depths.

What constitutes a bounce? Is dropping 25' to set a flag for a day of diving the same as dropping to 250+ for 1 min?

The only issue I see is carrying the supplied gas, I remember a diver who is no longer with us that tried to bounce to 205 fsw on a single 80 in Seattle. Gas planning would have been a good skill to master prior to trying that.