Deep stops

cedricverdier · 22nd August 2005, 10:53

Hi all,

I thought deeper stops and slower ascent rate were the current and accepted trend amongst technical divers.

So I was quite surprised to see some posts on another forum and some technical divers I discussed with, stating that they didn't agree with the "deeper stops" philosophy.

So let's discuss about it: please give us your opinion and your current practice.

Cheers

decoweenie · 22nd August 2005, 11:12

GF = 10/100 with "continuous" slow ascent thru the deep 1m-stops instead of move-stop, until the longer shallow stop depths.

Deepwreck · 22nd August 2005, 14:26

RGBM - I like to leave the wreck and make a slow ascent to the first stop, and then I let time expire and slowly move up to the next stop. I try to keep a slow continuis ascent without violating any deco Ceilings.

For Example, I did a dive to 250' and the first stop was 170' by the time I arived at 170 my deco had moved to 150' and I stoped there. I feel so much better when I do deep stops, and move slowly between stops with lots of breaths.

CCR-Wrecker · 22nd August 2005, 19:11

my practice has been a 1 or 2 minute stop around 65-70 feet above my bottom depth. For example 300' (10)--> 230(2)--> 160(2)--> then the required deco. I program it into VPM and let the profile reflect the stops.
Seems to work for me,(I'm still here and I can stand up straight)

Andy

wizbang · 22nd August 2005, 22:15

I am the same as Deepwreck and Decoweenie, I like to move through the stops and arrive just on time to move on again. The 9 and 6m stops tend to be more small jumps.

***Decodiver*** · 23rd August 2005, 04:49

On dives sub 90 metres, using VR3, I will do my deep bubble stops and then ascend very slowly, say 3 metres per minute, the rest of the way, generally clearing, or seriously reducing, look ahead stops, on the way.

Cheers,

Dave Cooper.

Mark Chase · 23rd August 2005, 07:55

Quote: (Originally Posted by Decodiver)

On dives sub 90 metres, using VR3, I will do my deep bubble stops and then ascend very slowly, say 3 metres per minute, the rest of the way, generally clearing, or seriously reducing, look ahead stops, on the way.

Cheers,

Dave Cooper.

What he said for pretty much all my diving but to clarify for JP I ascend at 3m/min from the wreck to first stop depth unless it’s a 70m+ dive In which case I ascend to my first VR3 stop at 5-10m/min. On most of the diving I have done in that range the VR3 is giving me a stop at around 80% of max depth. However it can then jump very quickly to the shallow stops which I don’t like so I often add intermediate stops my self and use the VR3 to control the 6m final stop.

The self made profile is based on my experience using GF's on Decoplanner running 20/80.

It seems to work for me.

ATB

Mark Chase

***Decodiver*** · 23rd August 2005, 11:01

Quote: (Originally Posted by jptaylor9)

Do you ascend at normal rate (i.e ~10m/min) to atleast the first deep stop?

Hi JT,

Yes. Give or take.

Cheers,

Dave.

22nd August 2005, 10:53	#1 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 497	Deep stops Hi all, I thought deeper stops and slower ascent rate were the current and accepted trend amongst technical divers. So I was quite surprised to see some posts on another forum and some technical divers I discussed with, stating that they didn't agree with the "deeper stops" philosophy. So let's discuss about it: please give us your opinion and your current practice. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
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22nd August 2005, 11:12	#2 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	GF = 10/100 with "continuous" slow ascent thru the deep 1m-stops instead of move-stop, until the longer shallow stop depths. __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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22nd August 2005, 14:26	#3 (permalink)
Deepwreck Custom Title Allowed! Current Rebreather/s: Megalodon Classic Kiss Other Rebreather/s: Join Date: Aug 2005 Location: Minnesota Posts: 113	RGBM - I like to leave the wreck and make a slow ascent to the first stop, and then I let time expire and slowly move up to the next stop. I try to keep a slow continuis ascent without violating any deco Ceilings. For Example, I did a dive to 250' and the first stop was 170' by the time I arived at 170 my deco had moved to 150' and I stoped there. I feel so much better when I do deep stops, and move slowly between stops with lots of breaths.
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22nd August 2005, 19:11	#4 (permalink)
CCR-Wrecker Classic KISSer #276 Current Rebreather/s: Inspiration Classic Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Apr 2005 Location: New York Posts: 225	my practice has been a 1 or 2 minute stop around 65-70 feet above my bottom depth. For example 300' (10)--> 230(2)--> 160(2)--> then the required deco. I program it into VPM and let the profile reflect the stops. Seems to work for me,(I'm still here and I can stand up straight) Andy
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22nd August 2005, 22:15	#5 (permalink)
wizbang WEB MERMEN Current Rebreather/s: Inspiration Classic Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Vision Evolution Prism Topaz Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Perth Australia Posts: 386	I am the same as Deepwreck and Decoweenie, I like to move through the stops and arrive just on time to move on again. The 9 and 6m stops tend to be more small jumps.
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23rd August 2005, 04:49	#6 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,197	On dives sub 90 metres, using VR3, I will do my deep bubble stops and then ascend very slowly, say 3 metres per minute, the rest of the way, generally clearing, or seriously reducing, look ahead stops, on the way. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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23rd August 2005, 07:55	#7 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,694	Quote: (Originally Posted by Decodiver) On dives sub 90 metres, using VR3, I will do my deep bubble stops and then ascend very slowly, say 3 metres per minute, the rest of the way, generally clearing, or seriously reducing, look ahead stops, on the way. Cheers, Dave Cooper. What he said for pretty much all my diving but to clarify for JP I ascend at 3m/min from the wreck to first stop depth unless it’s a 70m+ dive In which case I ascend to my first VR3 stop at 5-10m/min. On most of the diving I have done in that range the VR3 is giving me a stop at around 80% of max depth. However it can then jump very quickly to the shallow stops which I don’t like so I often add intermediate stops my self and use the VR3 to control the 6m final stop. The self made profile is based on my experience using GF's on Decoplanner running 20/80. It seems to work for me. ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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23rd August 2005, 11:01	#8 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,197	Quote: (Originally Posted by jptaylor9) Do you ascend at normal rate (i.e ~10m/min) to atleast the first deep stop? Hi JT, Yes. Give or take. Cheers, Dave. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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