Deep dive bailout options.

wizbang · 9th December 2005, 00:25

I would like to know from those diving deeper than 100M + what you do for Bailout. Specifically OC Bailout. (if you use a BOB then please chime in as well)

I think the Poll options cover it but a small explanation won't go astray.

Some clarification of the specifics:
Depth, BT, RT, Gases.
How many and what size OC tanks.
If you plan to use your onboard as bailout.
If staged or supported, then what is staged and what is carried.
If you carry as part of a team, how many in the team and what does each carry.
If alpinist, where did you get the big brass ones?

If I have forgotten anything then add it in.
thanks in advance.
Regards Wiz
Edit: Thanks Steve.
This is for Ocean diving and more than 100m = 11ATM = 330Ft there abouts.
Sorry if it seems like i am being a dpeth snob but the reason I ask is because it is alot of OC gas to carry for 20mins at 140m and any current would not be fun.

thanks again Wiz

***diverklondike*** · 9th December 2005, 00:51

Typically I carry the following for a 250fsw ocean dive w/ BT of 30 minutes give or take...

AL 40 with 16/40
AL 40 with 40%
Plus extra 15 cubic ft of 100% mounted on the top of my rig.

Dive buddy typically carries 2 AL 40's with similar mixes

I also carry two different algorithms of bailout tables in addition to the options that my computers provide. Inspiration with HH and VR-3 intergraded via 4th cell...

1) Deep stops...

2) Buhlman based that will allow me to get shallow ASAP...

My approach is to stay on the loop as long as possible depending on the issue. Will go SCR before full OC given the choice...

Dive Safe...

Mark

**Steve** · 9th December 2005, 01:09

Hi Wiz,

It might help to clarify if people are talking about cave or ocean dives.

Don't you just love it when you ask about something and the first answer is answering a different question? (100m is 330 ft)

denzel · 9th December 2005, 16:08

Sorry, voted B4 I read about the 100 meter.grin.

denz.

***Decodiver*** · 9th December 2005, 18:22

Hi Wiz

Sub 100m I sling 2 ali 80s, a 3 litre of O2 then stage cylinders at the bottom of the shot and on the trapeze.

I also have an independent twin set with 30 and 50% as a drop tank on a 20 metre line.

If I am solo the alis contain bottom mix, if diving as a pair then we will mix and match.

Cheers

Dave Cooper

***Decodiver*** · 9th December 2005, 18:29

Hi Wiz

Sub 100m I sling 2 ali 80s, a 3 litre of O2 then stage cylinders at the bottom of the shot and on the trapeze.

I also have an independent twin set with 30 and 50% as a drop tank on a 20 metre line.

If I am solo the alis contain bottom mix, if diving as a pair then we will mix and match.

Cheers

Dave Cooper

abowie · 9th December 2005, 23:03

Quote: (Originally Posted by diverklondike)

Typically I carry the following for a 250fsw ocean dive w/ BT of 30 minutes give or take...

AL 40 with 16/40
AL 40 with 40%
Plus extra 15 cubic ft of 100% mounted on the top of my rig.

Dive buddy typically carries 2 AL 40's with similar mixes

Mark

Presumably you're relying on you buddy's bail out too as even running V-Planner on nominal that doesn't seem nearly enough:

1572.8 ltr (56cuft) Trimix 16/40
1635.6 ltr (58cuft) Nitrox 40
978.7 ltr (35cuft) Oxygen
4187.1 ltr OC TOTAL

You need another 10% running at +2 conservatism.

I can't work out how to calculate bailout in the Buhlmann version of Gap I have (I'm sure it's possible) so I can't be sure but I doubt the bailout requirements would be substantially less.

***jradomski*** · 10th December 2005, 06:59

Quote: (Originally Posted by abowie)

Presumably you're relying on you buddy's bail out too as even running V-Planner on nominal that doesn't seem nearly enough:

1572.8 ltr (56cuft) Trimix 16/40
1635.6 ltr (58cuft) Nitrox 40
978.7 ltr (35cuft) Oxygen
4187.1 ltr OC TOTAL

You need another 10% running at +2 conservatism.

I can't work out how to calculate bailout in the Buhlmann version of Gap I have (I'm sure it's possible) so I can't be sure but I doubt the bailout requirements would be substantially less.

go to the template settingsand click on use oc for deco.

abowie · 10th December 2005, 07:36

Quote: (Originally Posted by jradomski)

go to the template settingsand click on use oc for deco.

thanks Joe.

Mark Chase · 10th December 2005, 12:41

Only done more than 100m on CCR once and that was only 105 so no expert but i would be diving custom gas mix for the dive plan so there isnt a generic answer to the question..

I had two Ali 10s one had 18/45 in and the other has 32%. Andrew had a 10 of 80% and there was a drop tank on the boat.

18/45 is just over 2.0 PP02 at 105m but I didnt have to return to the shot so I could bail inboard and stick the 18/45 in on the way up.

ATB

Mark Chase

View Poll Results: Deep dive bailout stratergies.
Team Shared	19	36.54%
Carry all gas	23	44.23%
Carry some Stage some	7	13.46%
Support Staff	0	0%
Alpinist	0	0%
Other IE. BOB	3	5.77%
Voters: 52. You may not vote on this poll

9th December 2005, 00:25	#1 (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: 379	Deep dive bailout options. I would like to know from those diving deeper than 100M + what you do for Bailout. Specifically OC Bailout. (if you use a BOB then please chime in as well) I think the Poll options cover it but a small explanation won't go astray. Some clarification of the specifics: Depth, BT, RT, Gases. How many and what size OC tanks. If you plan to use your onboard as bailout. If staged or supported, then what is staged and what is carried. If you carry as part of a team, how many in the team and what does each carry. If alpinist, where did you get the big brass ones? If I have forgotten anything then add it in. thanks in advance. Regards Wiz Edit: Thanks Steve. This is for Ocean diving and more than 100m = 11ATM = 330Ft there abouts. Sorry if it seems like i am being a dpeth snob but the reason I ask is because it is alot of OC gas to carry for 20mins at 140m and any current would not be fun. thanks again Wiz Last edited by wizbang : 9th December 2005 at 01:22.
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9th December 2005, 00:51	#2 (permalink)
*diverklondike* Moderator Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Oct 2005 Location: Delaware, USA Posts: 1,462	Re: Deep dive bailout options. Typically I carry the following for a 250fsw ocean dive w/ BT of 30 minutes give or take... AL 40 with 16/40 AL 40 with 40% Plus extra 15 cubic ft of 100% mounted on the top of my rig. Dive buddy typically carries 2 AL 40's with similar mixes I also carry two different algorithms of bailout tables in addition to the options that my computers provide. Inspiration with HH and VR-3 intergraded via 4th cell... 1) Deep stops... 2) Buhlman based that will allow me to get shallow ASAP... My approach is to stay on the loop as long as possible depending on the issue. Will go SCR before full OC given the choice... Dive Safe... Mark Last edited by diverklondike : 9th December 2005 at 01:15.
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9th December 2005, 01:09	#3 (permalink)
Steve Ladies bring a plate Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss MK 15.X Home Build Join Date: Feb 2005 Location: Perth - Australia Posts: 1,070	Re: Deep dive bailout options. Hi Wiz, It might help to clarify if people are talking about cave or ocean dives. Don't you just love it when you ask about something and the first answer is answering a different question? (100m is 330 ft) __________________ WARNING: I contain occasional coarse language, extreme sexual references, nudity, and adult themes, which may offend some people - Usually churchy types.
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9th December 2005, 16:08	#4 (permalink)
denzel Holiday diver Current Rebreather/s: Inspiration Classic Other Rebreather/s: Not Bought Yet Join Date: Aug 2005 Location: Perth! Posts: 358	Re: Deep dive bailout options. Sorry, voted B4 I read about the 100 meter.grin. denz. __________________ My deepest so far, 558.50 mtr, my rig a LF90D...
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9th December 2005, 18:22	#5 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,168	Re: Deep dive bailout options. Hi Wiz Sub 100m I sling 2 ali 80s, a 3 litre of O2 then stage cylinders at the bottom of the shot and on the trapeze. I also have an independent twin set with 30 and 50% as a drop tank on a 20 metre line. If I am solo the alis contain bottom mix, if diving as a pair then we will mix and match. 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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9th December 2005, 18:29	#6 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,168	Re: Deep dive bailout options. Hi Wiz Sub 100m I sling 2 ali 80s, a 3 litre of O2 then stage cylinders at the bottom of the shot and on the trapeze. I also have an independent twin set with 30 and 50% as a drop tank on a 20 metre line. If I am solo the alis contain bottom mix, if diving as a pair then we will mix and match. 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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9th December 2005, 23:03	#7 (permalink)
abowie Fighting Girl Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: May 2005 Location: Land of Oz Posts: 573	Re: Deep dive bailout options. Quote: (Originally Posted by diverklondike) Typically I carry the following for a 250fsw ocean dive w/ BT of 30 minutes give or take... AL 40 with 16/40 AL 40 with 40% Plus extra 15 cubic ft of 100% mounted on the top of my rig. Dive buddy typically carries 2 AL 40's with similar mixes Mark Presumably you're relying on you buddy's bail out too as even running V-Planner on nominal that doesn't seem nearly enough: 1572.8 ltr (56cuft) Trimix 16/40 1635.6 ltr (58cuft) Nitrox 40 978.7 ltr (35cuft) Oxygen 4187.1 ltr OC TOTAL You need another 10% running at +2 conservatism. I can't work out how to calculate bailout in the Buhlmann version of Gap I have (I'm sure it's possible) so I can't be sure but I doubt the bailout requirements would be substantially less. __________________ Andrew Bowie Rebreather-friendly Buddy Last edited by abowie : 9th December 2005 at 23:13.
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10th December 2005, 06:59	#8 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,817	Re: Deep dive bailout options. Quote: (Originally Posted by abowie) Presumably you're relying on you buddy's bail out too as even running V-Planner on nominal that doesn't seem nearly enough: 1572.8 ltr (56cuft) Trimix 16/40 1635.6 ltr (58cuft) Nitrox 40 978.7 ltr (35cuft) Oxygen 4187.1 ltr OC TOTAL You need another 10% running at +2 conservatism. I can't work out how to calculate bailout in the Buhlmann version of Gap I have (I'm sure it's possible) so I can't be sure but I doubt the bailout requirements would be substantially less. go to the template settingsand click on use oc for deco. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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10th December 2005, 07:36	#9 (permalink)
abowie Fighting Girl Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: May 2005 Location: Land of Oz Posts: 573	Re: Deep dive bailout options. Quote: (Originally Posted by jradomski) go to the template settingsand click on use oc for deco. thanks Joe. __________________ Andrew Bowie Rebreather-friendly Buddy
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10th December 2005, 12:41	#10 (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: 2,470	Re: Deep dive bailout options. Only done more than 100m on CCR once and that was only 105 so no expert but i would be diving custom gas mix for the dive plan so there isnt a generic answer to the question.. I had two Ali 10s one had 18/45 in and the other has 32%. Andrew had a 10 of 80% and there was a drop tank on the boat. 18/45 is just over 2.0 PP02 at 105m but I didnt have to return to the shot so I could bail inboard and stick the 18/45 in on the way up. 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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