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I was just wondering if anybody has had the opportunity to dive the discovery mk6, and what your impressions are of the unit. What initially attracted me to the Discovery was it's simplicity. I am curious as to whether other divers have found it to be simple to use as well.
All I have to go on now is information provided by Poseidon.
There's a sub-forum dedicated to the Poseidon Cis Lunar Mk VI at Rebreather World Poseidon CIS Lunar Mk VI Rebreather - Rebreather World . Sign up and you can also privately message the forum members if you have any special queries.
Just remember, even though it is being marketed as a recreational rebreather, it is still a rebreather where anything can go wrong. As posted earlier check the rebreather forums as they have a dedicated section on this unit with mixed reviews, mostly from people wanting to upgrade it to tec level though.
Just remember, even though it is being marketed as a recreational rebreather, it is still a rebreather where anything can go wrong. As posted earlier check the rebreather forums as they have a dedicated section on this unit with mixed reviews, mostly from people wanting to upgrade it to tec level though.
I was asked about this unit by someone this past weekend. Knowing zero about it I went on the web site to learn more. I'm sure it is a fine piece of gear Poseidon has always made high quality gear and it looks high quality. I just don't understand the market for this unit. A rebreather that extends bottom but don't go into deco with it? What's the sense? Is it the light weight? I can exceed NDL at 40' and below with my 90cuft doubles why spend this kind of $$$ for this unit? Also the battery scares the heck outa me.
The info I got was if the battery goes your SOL. I guess it's a concern for ours too because I've yet to see a picture of anyone using one without a slung tank (bailout bottle?). Putting my life totally in the "hands" of a automaticly controlled life support system makes my pucker factor peak. I'd like to hear a rational(s) for this unit that makes sense to me. I don't get it what am I missing?
~snip~ I guess it's a concern for ours too because I've yet to see a picture of anyone using one without a slung tank (bailout bottle?). Putting my life totally in the "hands" of a automaticly controlled life support system makes my pucker factor peak. ?
Umm, why would you think it's a good idea to dive a RB without a bailout bottle?
I agree with your 2nd sentence though. My understanding is that it has no way to manually add O2. So it's not so much of some wanting it to tec dive, if it doesn't have a way to manually add O2, IMO it's a safety issue.
AfterDark, even within NDLs there are some advantages for rebreathers. One is that a rebreather can provide an optimal nitrox mix at whichever depth you are at, thus getting the most possible NDL time. Also you don't have bubbles, which is advantageous in some situations, such as photographers who wish to photograph shy critters. I would argue this unit to be trying to make a market for itself and other "recreational" rebreathers rather than being targeted at an existing market.
A bailout bottle is standard gear with any rebreather. I don't see that changing. There is a push to move rebreathers into the recreational diving marketplace. Unfortunately, they pose serious risks with little or no warning. Most current rebreather divers are highly trained technical divers who can handle the risk and responsibility of rebreather diving. The question for manufacturers and training organizations is how to mitigate the risks of rebreathers in a recreational context where typical divers do not have the discipline technical divers generally have. The Poseidon Discovery is designed to prevent some of the potential mistakes by not giving the user full control.
Franco mentions wanting manual addition of O2. It's true that most rebreathers have manual additions, but with that control comes a responsibility not to add too much O2. Since you can't add O2 on the Poseidon unit, you can't add too much O2. Now if the computer fails, well that's a different issue.
Thanks for the input. I'm a old school open-circuit diver. I like total control over my equipment, my fate I want in my hands. I understand rebreathers to a point, even used a WWII model once long ago. I've never owned one and I don't see one in my future. I'm also a electronics tech and understand computerized mechanisms enough to think a completely computerized rebreather IMO is about as safe as the WWII model I used so many years ago. I can't say I'm surprised about the regular use of a bailout bottle with rebreathers sounds like a good idea from here.
The manual O2 feature could easily be added and a sensor with a volume restriction mech that would allow only a safe amount to be added. I know I don't trust computerized mech and here I am suggesting one! Hey what can I say? When I want to photograph bubble shy critters I break my old DH reg. My instincts about a market niche or lack thereof for this unit seems to be accurate. Thanks again
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