Three CCR Depth records on stock units (trip report)

cedricverdier · 29th May 2006, 09:38

Hi all,

In the past few months, I was glad to be part of a team of experienced rebreather divers who explored the Sra Keow cave in Krabi, Thailand:

- I personaly pushed the limits of the Cave to 201 m/ 663ft using a standard ISC Megalodon Closed-Circuit rebreather with an axial scrubber and no major modification. This dive is supposed to be the deepest dive ever done with a Megalodon, and also the deepest cave dive/rebreather dive ever done in Asia.

- Mike Gadd (Dr Mike), from Singapore, reached a depth of 191m / 626ft with a Delta-P Ouroboros CCR with no modification. Here again, it's supposed to be the deepest dive ever done with this unit.

- During a previous expedition, Bruce Konefe (Andibk) used an AP Diving Evolution CCR to explore the same cave at 120m / 393ft, quite a challenge with a very small scrubber.

I just finished a full trip report (finally!). It's now available on www.cedricverdier.com (Cave Expeditions page).

The same team will be in the Philippines Islands in July to uncover the mysteries of the sunken WWII japanese battleships Yamashiro and Fuso at 200m / 660ft.

Cheers

Nicholas von Rosen · 29th May 2006, 11:00

I'm impressed...

I would not go that deep

Cool that you got the guts to do things like this

Nick

nmanfield · 29th May 2006, 11:34

Cedric, Mike,

Very impressive dive and excellent quality report. What would you say the main lessons learnt were? (i.e what would you do different if doing the same / similar dive again)

Thanks again

Pierre Farrugia · 29th May 2006, 12:29

Congratulations to you and Drmike for this impressive dive and also your support team! Have some questions to ask, what size of cylinders were you using for boyancy ? What safety were the Vr3's set and if you followed them ?

Thanks

Mixaddict · 29th May 2006, 15:18

Thank you for sharing your excellent trip report with us. These dives are an amazing accomplishment. Thank you for sharing these facinating details with the rest of the rebreather community.

Johan · 29th May 2006, 16:49

Very nice article Cedric and good to hear that everything went ok.

**UWSojourner** · 29th May 2006, 17:10

Great story. Thanks for the details!

cedricverdier · 29th May 2006, 22:15

Quote: (Originally Posted by Pierre Farrugia)

Congratulations to you and Drmike for this impressive dive and also your support team! Have some questions to ask, what size of cylinders were you using for boyancy ? What safety were the Vr3's set and if you followed them ?

Thanks

hi Pierre,

Buoyancy: 3L tank @200bar (not enough, even for just the dry suit!!!)

VR3: 0% conservatism (VR3 VPM for me, VR3 Buhlman for Mike). Table was planned with V-Planner VPM B/E but some stops were padded according to VR3.

Cheers

Deepwreck · 30th May 2006, 15:43

Great job.
I was wondering if you used air breaks or anything to help with the OTU, and CNS loading? What was your total bottom time?
Deepwreck

gabrielesub · 30th May 2006, 20:00

impressive report, very interesting.
thank you!

29th May 2006, 09:38	#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: 488	Three CCR Depth records on stock units (trip report) Hi all, In the past few months, I was glad to be part of a team of experienced rebreather divers who explored the Sra Keow cave in Krabi, Thailand: - I personaly pushed the limits of the Cave to 201 m/ 663ft using a standard ISC Megalodon Closed-Circuit rebreather with an axial scrubber and no major modification. This dive is supposed to be the deepest dive ever done with a Megalodon, and also the deepest cave dive/rebreather dive ever done in Asia. - Mike Gadd (Dr Mike), from Singapore, reached a depth of 191m / 626ft with a Delta-P Ouroboros CCR with no modification. Here again, it's supposed to be the deepest dive ever done with this unit. - During a previous expedition, Bruce Konefe (Andibk) used an AP Diving Evolution CCR to explore the same cave at 120m / 393ft, quite a challenge with a very small scrubber. I just finished a full trip report (finally!). It's now available on www.cedricverdier.com (Cave Expeditions page). The same team will be in the Philippines Islands in July to uncover the mysteries of the sunken WWII japanese battleships Yamashiro and Fuso at 200m / 660ft. 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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29th May 2006, 11:00	#2 (permalink)
Nicholas von Rosen Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Jul 2005 Location: Helsingoer, Denmark Posts: 152	Re: Three CCR Depth records on stock units (trip report) I'm impressed... I would not go that deep Cool that you got the guts to do things like this Nick __________________ NICK
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29th May 2006, 11:34	#3 (permalink)
nmanfield Megalegalegalegadingdong! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: May 2005 Location: Odessa, Ukraine Posts: 329	Re: Three CCR Depth records on stock units (trip report) Cedric, Mike, Very impressive dive and excellent quality report. What would you say the main lessons learnt were? (i.e what would you do different if doing the same / similar dive again) Thanks again __________________ Tub 'O Lard
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29th May 2006, 12:29	#4 (permalink)
Pierre Farrugia Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Malta Posts: 636	Re: Three CCR Depth records on stock units (trip report) Congratulations to you and Drmike for this impressive dive and also your support team! Have some questions to ask, what size of cylinders were you using for boyancy ? What safety were the Vr3's set and if you followed them ? Thanks __________________ Pierre Farrugia My wife told me " If you don't quit diving I'm going to leave you" My reply " God, I'll miss you" www.atlam.org www.divemed.com Last edited by Pierre Farrugia : 29th May 2006 at 15:22.
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29th May 2006, 15:18	#5 (permalink)
Mixaddict Always Learning! Current Rebreather/s: Inspiration Vision Evolution Other CCR Dolphin Other Rebreather/s: Inspiration Classic Other CCR Dolphin Join Date: Jan 2006 Location: Draper, Utah USA Posts: 426	Re: Three CCR Depth records on stock units (trip report) Thank you for sharing your excellent trip report with us. These dives are an amazing accomplishment. Thank you for sharing these facinating details with the rest of the rebreather community.
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29th May 2006, 16:49	#6 (permalink)
Johan New Member Current Rebreather/s: Evolution Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: London Posts: 15	Re: Three CCR Depth records on stock units (trip report) Very nice article Cedric and good to hear that everything went ok. __________________ http://www.tacticaldiving.com
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29th May 2006, 17:10	#7 (permalink)
UWSojourner Pacific Northwest Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Feb 2005 Location: Portland Oregon Posts: 556	Re: Three CCR Depth records on stock units (trip report) Great story. Thanks for the details!
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29th May 2006, 22:15	#8 (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: 488	Re: Three CCR Depth records on stock units (trip report) Quote: (Originally Posted by Pierre Farrugia) Congratulations to you and Drmike for this impressive dive and also your support team! Have some questions to ask, what size of cylinders were you using for boyancy ? What safety were the Vr3's set and if you followed them ? Thanks hi Pierre, Buoyancy: 3L tank @200bar (not enough, even for just the dry suit!!!) VR3: 0% conservatism (VR3 VPM for me, VR3 Buhlman for Mike). Table was planned with V-Planner VPM B/E but some stops were padded according to VR3. 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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30th May 2006, 15:43	#9 (permalink)
Deepwreck Custom Title Allowed! Current Rebreather/s: Megalodon Classic Kiss Other Rebreather/s: Join Date: Aug 2005 Location: Minnesota Posts: 112	Re: Three CCR Depth records on stock units (trip report) Great job. I was wondering if you used air breaks or anything to help with the OTU, and CNS loading? What was your total bottom time? Deepwreck
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30th May 2006, 20:00	#10 (permalink)
gabrielesub Rebreather World Writer Current Rebreather/s: Inspiration Classic Inspiration Vision Other CCR Dolphin Ray Other Rebreather/s: Not Bought Yet Other CCR Dolphin Ray Join Date: Oct 2005 Location: Italy Posts: 48	Re: Three CCR Depth records on stock units (trip report) impressive report, very interesting. thank you!
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