Deep diving Certification using Tanks or Rebreather?

CEStanley · 20th September 2005, 03:58

I have a question regarding Rebreathers and Dual tanks. I stopped by a local dive shop and was told that they would only certify me for Deep/Trimix using dual tanks. Is this the norm, that everyone has dual tanks that also have rebreathers? Or is this a shop specific requirement?

I'm asking because I would rather train on my Dolphin for deep dives with the hope of one day going to the Continental shelf and diving some of the more advanced shipwrecks, like the Andrea Doria. There are a total of 4 individuals here in the Phoenix area with the same basic desires.

***jradomski*** · 20th September 2005, 05:07

Quote: (Originally Posted by CEStanley)

I have a question regarding Rebreathers and Dual tanks. I stopped by a local dive shop and was told that they would only certify me for Deep/Trimix using dual tanks. Is this the norm, that everyone has dual tanks that also have rebreathers? Or is this a shop specific requirement?

I'm asking because I would rather train on my Dolphin for deep dives with the hope of one day going to the Continental shelf and diving some of the more advanced shipwrecks, like the Andrea Doria. There are a total of 4 individuals here in the Phoenix area with the same basic desires.

Well it depends..

Some agencies like ANDI allow a person to get Trimix certified on a CCR without ever going the OC route.. It requires alot more dives than the normal CCR trimix class.. The one key point is that the equipment must be certified for use at the appropriate depths and the divermust have the appropriate experience before starting teh CCR trimix class,, The dolphinis not so it couldn;t be used.. Something like an Inspiration or Meg could be...

John Langley · 20th September 2005, 07:10

You wont be able to do very deep dives on a scr like the dolphin unless you convert it to ccr. Have you converted it yet ?

CEStanley · 20th September 2005, 14:12

I have not converted to CCR. I do not think Dolphin in CCR mode is what I want when I go CCR, but right now, I am still quite new at SCR and I'd like to get near 100 dives on my Dolphin before I really start considering CCR RBs.

So, I take it that most people on CCR have been through

dual tank diving before they went CCR?

***schford*** · 20th September 2005, 14:25

I would say most have but that doesn't mean you should!

Moving from SCR to CCR is a much 'easier' progression than doubles to rebreathers.

Only possible down side I can think of is not having as much experience with OC when it comes to ever having to bail out off the CCR.

If it was me - I would not goback onto doubles if I was allready diving SCR. If I was you I would rack your dives up on your SCR whilst deciding what CCR to get.

Then go get that CCR rack up some horus on that and move up the qualification ladder then.

Stuart

dive2dive2000 · 20th September 2005, 14:41

Sound Advice

Quote: (Originally Posted by schford)

I would say most have but that doesn't mean you should!

Moving from SCR to CCR is a much 'easier' progression than doubles to rebreathers.

Only possible down side I can think of is not having as much experience with OC when it comes to ever having to bail out off the CCR.

If it was me - I would not goback onto doubles if I was allready diving SCR. If I was you I would rack your dives up on your SCR whilst deciding what CCR to get.

Then go get that CCR rack up some horus on that and move up the qualification ladder then.

Stuart

Ken · 21st September 2005, 01:36

Quote: (Originally Posted by John Langley)

You wont be able to do very deep dives on a scr like the dolphin unless you convert it to ccr. Have you converted it yet ?

Sorry. Not historically accurate. Some Dolphins SCR's have been deep on the Andrea Doria way before the advent of the most current CCR's... with the exception of the Cis-Lunar and MK's.

decoweenie · 21st September 2005, 03:58

Quote: (Originally Posted by Ken)

...Some Dolphins SCR's have been deep on the Andrea Doria way before the advent of the most current CCR's...

I thought there was only 1 Dolphin ever used to dive the AD by Mr Odom ?

Ken · 21st September 2005, 10:53

Quote: (Originally Posted by decoweenie)

I thought there was only 1 Dolphin ever used to dive the AD by Mr Odom ?

The Seeker had at least two sets of modified Dolphins diving the Doria in 98. When was Odom using his kit?

abowie · 21st September 2005, 11:43

Quote: (Originally Posted by Ken)

The Seeker had at least two sets of modified Dolphins diving the Doria in 98. When was Odom using his kit?

Fascinating.

How were they modified? Presumably they were running a trimix of some description?
Bigger tank(s)?

20th September 2005, 03:58	#1 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	Deep diving Certification using Tanks or Rebreather? I have a question regarding Rebreathers and Dual tanks. I stopped by a local dive shop and was told that they would only certify me for Deep/Trimix using dual tanks. Is this the norm, that everyone has dual tanks that also have rebreathers? Or is this a shop specific requirement? I'm asking because I would rather train on my Dolphin for deep dives with the hope of one day going to the Continental shelf and diving some of the more advanced shipwrecks, like the Andrea Doria. There are a total of 4 individuals here in the Phoenix area with the same basic desires.
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20th September 2005, 05:07	#2 (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	Quote: (Originally Posted by CEStanley) I have a question regarding Rebreathers and Dual tanks. I stopped by a local dive shop and was told that they would only certify me for Deep/Trimix using dual tanks. Is this the norm, that everyone has dual tanks that also have rebreathers? Or is this a shop specific requirement? I'm asking because I would rather train on my Dolphin for deep dives with the hope of one day going to the Continental shelf and diving some of the more advanced shipwrecks, like the Andrea Doria. There are a total of 4 individuals here in the Phoenix area with the same basic desires. Well it depends.. Some agencies like ANDI allow a person to get Trimix certified on a CCR without ever going the OC route.. It requires alot more dives than the normal CCR trimix class.. The one key point is that the equipment must be certified for use at the appropriate depths and the divermust have the appropriate experience before starting teh CCR trimix class,, The dolphinis not so it couldn;t be used.. Something like an Inspiration or Meg could be... __________________ 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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20th September 2005, 07:10	#3 (permalink)
John Langley New Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Not Bought Yet Classic Kiss Join Date: Apr 2005 Location: in an appartment on the 99th floor of my block Posts: 103	You wont be able to do very deep dives on a scr like the dolphin unless you convert it to ccr. Have you converted it yet ?
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20th September 2005, 14:12	#4 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	I have not converted to CCR. I do not think Dolphin in CCR mode is what I want when I go CCR, but right now, I am still quite new at SCR and I'd like to get near 100 dives on my Dolphin before I really start considering CCR RBs. So, I take it that most people on CCR have been through dual tank diving before they went CCR?
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20th September 2005, 14:25	#5 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,662	I would say most have but that doesn't mean you should! Moving from SCR to CCR is a much 'easier' progression than doubles to rebreathers. Only possible down side I can think of is not having as much experience with OC when it comes to ever having to bail out off the CCR. If it was me - I would not goback onto doubles if I was allready diving SCR. If I was you I would rack your dives up on your SCR whilst deciding what CCR to get. Then go get that CCR rack up some horus on that and move up the qualification ladder then. Stuart
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20th September 2005, 14:41	#6 (permalink)
dive2dive2000 PRISM DIVER & LUVIN IT! Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Feb 2005 Location: Long Island, NY Posts: 784	Sound Advice Quote: (Originally Posted by schford) I would say most have but that doesn't mean you should! Moving from SCR to CCR is a much 'easier' progression than doubles to rebreathers. Only possible down side I can think of is not having as much experience with OC when it comes to ever having to bail out off the CCR. If it was me - I would not goback onto doubles if I was allready diving SCR. If I was you I would rack your dives up on your SCR whilst deciding what CCR to get. Then go get that CCR rack up some horus on that and move up the qualification ladder then. Stuart __________________ Safe Diving, Martin "but what's the fun of getting what you need, instead of what you want?"
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21st September 2005, 01:36	#7 (permalink)
Ken Member Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: New York City Posts: 320	Quote: (Originally Posted by John Langley) You wont be able to do very deep dives on a scr like the dolphin unless you convert it to ccr. Have you converted it yet ? Sorry. Not historically accurate. Some Dolphins SCR's have been deep on the Andrea Doria way before the advent of the most current CCR's... with the exception of the Cis-Lunar and MK's.
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21st September 2005, 03:58	#8 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Quote: (Originally Posted by Ken) ...Some Dolphins SCR's have been deep on the Andrea Doria way before the advent of the most current CCR's... I thought there was only 1 Dolphin ever used to dive the AD by Mr Odom ? __________________ "...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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21st September 2005, 10:53	#9 (permalink)
Ken Member Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: New York City Posts: 320	Quote: (Originally Posted by decoweenie) I thought there was only 1 Dolphin ever used to dive the AD by Mr Odom ? The Seeker had at least two sets of modified Dolphins diving the Doria in 98. When was Odom using his kit?
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21st September 2005, 11:43	#10 (permalink)
abowie Fighting Girl Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: May 2005 Location: Land of Oz Posts: 573	Quote: (Originally Posted by Ken) The Seeker had at least two sets of modified Dolphins diving the Doria in 98. When was Odom using his kit? Fascinating. How were they modified? Presumably they were running a trimix of some description? Bigger tank(s)? __________________ Andrew Bowie Rebreather-friendly Buddy
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