Where should I start to approach the rebreather world

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beester

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First of all we need to sort things out. Rebreather diving has been around since 1800. Mostly done by the military divers and with machines that costs fortunes to buy and maintain. The thing with Poseidon Rebreather, is that it was the first aim at the recreational market. It was the big revolution in diving, since the recreational market is 10000 times bigger than the technical side. Together with old school rebreather inventor/diver they came up with the MKVI 2009. It was not a rebreather and will never be one. The difference lays in the monitoring system of the diver. A system for a recreational diver has to be so much more sophisticated than a rebreather monitoring system. A "normal" rebreather can kill you in 2 min if you don't know what your are doing and can respond to different types of errors and changes inside the system. The Poseidon system is monitoring you as a diver and will tap you on the shoulder when something is about to happen. It look 15min ahead in time and tries to predict what will happen. It will then ask you to do something about this. This approach is unique. Other manufactures makes rebreathers. They tell the diver to get training and experience. Even experts do mistakes. On a Poseidon it is more likely to get information about what is going on and the being able to respond correctly. The machine is a little bit more advanced and if you don't look after your machine or have been taught the knowledge about small-little-things-that-can-go-wrong-during-startup then you will hate the machine. A good instructor will teach you all these skills and know hows. A rebreather is a simple construction of lungs, gas, sorb, hoses. This way you can always override thing and get into the water with a non working machine. Poseidon has another approach. If something is wrong on the machine, you wont get it into the water. However, it has a fail safe function. Even if you jump into the water without starting it up, it will start up and keep you alive until you are above water again. A feature no other machine can perform. The Poseidon is the safest machine in the world.

The thing for beginners are to get a SE7EN Sport. A basic startup version of Poseidons life supporting machine. It is priced very aggressive and is also upgradeable to a full Trimix +150m beast. Your choice.

If you are sick n tired of filling your tanks and looking at the manometer all the time, then this is for you. Diving with a Poseidon is a joy. You can stay down 3-4 hours with 3lit oxygen, 3lit air and 1 cartridge of sorb material.

Start off by booking a try dive with an instructor. Do an Open Water + Advanced course on the machine. This will make it possible for you to get another certificate (yeeeeaahh!) and also being able to rent a machine to begin with.
If I wanted sponsored messages I would look up the manufacturer. Thanks but no thanks.

My premises is that rebreathers are not for recreational divers. Because it doesn't add any real benefit. The only real "recreational" reason imo is maybe photographers who don't want to alarm aquatic fauna with the noice of exhalation bubbels in OC. But that's about it.

I don't know the figures, but the poseidon se7en was launched when... 2014? I haven't seen it become a big hit with technical divers (because they don't want a "hold my hand approach") and not by recreational divers because it costs a ton and there is no need.
 

beester

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@Nico-ITA I'm sorry we still have to meet ;-) Last weekend I was in Feltre but my phone broke down so wasn't able to reach you. I'm sure we'll be able to meet in the next couple of weekends so we can have a beer and talk diving and breathers ;-)
 

Wibble

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The thing with Poseidon Rebreather, is that it was the first aim at the recreational market. It was the big revolution in diving, since the recreational market is 10000 times bigger than the technical side. Together with old school rebreather inventor/diver they came up with the MKVI 2009. It was not a rebreather and will never be one.

The difference lays in the monitoring system of the diver. A system for a recreational diver has to be so much more sophisticated than a rebreather monitoring system. A "normal" rebreather can kill you in 2 min if you don't know what your are doing and can respond to different types of errors and changes inside the system. The Poseidon system is monitoring you as a diver and will tap you on the shoulder when something is about to happen. It look 15min ahead in time and tries to predict what will happen. It will then ask you to do something about this. This approach is unique. Other manufactures makes rebreathers. They tell the diver to get training and experience. Even experts do mistakes.

On a Poseidon it is more likely to get information about what is going on and the being able to respond correctly. The machine is a little bit more advanced and if you don't look after your machine or have been taught the knowledge about small-little-things-that-can-go-wrong-during-startup then you will hate the machine.

A good instructor will teach you all these skills and know hows. A rebreather is a simple construction of lungs, gas, sorb, hoses. This way you can always override thing and get into the water with a non working machine. Poseidon has another approach. If something is wrong on the machine, you wont get it into the water. However, it has a fail safe function. Even if you jump into the water without starting it up, it will start up and keep you alive until you are above water again. A feature no other machine can perform. The Poseidon is the safest machine in the world.

The thing for beginners are to get a SE7EN Sport. A basic startup version of Poseidons life supporting machine. It is priced very aggressive and is also upgradeable to a full Trimix +150m beast. Your choice.

If you are sick n tired of filling your tanks and looking at the manometer all the time, then this is for you. Diving with a Poseidon is a joy. You can stay down 3-4 hours with 3lit oxygen, 3lit air and 1 cartridge of sorb material.

Start off by booking a try dive with an instructor. Do an Open Water + Advanced course on the machine. This will make it possible for you to get another certificate (yeeeeaahh!) and also being able to rent a machine to begin with.

Interesting standpoint.

However... There's no such thing as a recreational rebreather that are as easy to use as open circuit; there's way too many other skills and a lot of understanding you need to safely run a rebreather.

I know of one guy who had a full on CO2 hit on a Poseidon, thus proving you need all the rebreather skills and understanding to run the unit.

Maybe I'm unique, but when I spend $10k+++ on a rebreather I don't want one that's limited. Hey, buy this sports car but we'll limit the engine to slowly get to 30mph. Paying the b'stards more for their purple/green/blue/ultramarine "batteries" is just plain stoopid and appears to be more about avarice.

The reason Poseidon rebreathers didn't even get anywhere near my long list, let alone my shortlist of rebreather contenders is nannying. They're no better than other rebreathers, but they're a lot worse.

On a Poseidon it is more likely to get information about what is going on and the being able to respond correctly. The machine is a little bit more advanced and if you don't look after your machine or have been taught the knowledge about small-little-things-that-can-go-wrong-during-startup then you will hate the machine.
That made me laugh! All machines need careful monitoring. It's the piece of flesh attached to the front of the unit that gets things wrong. Mitigation for that: more experience and training.

What about the machine deciding that there's something wrong just before a dive and it sits there sulking. Other boxes give you the opportunity to work things out.


I bought a unit that treats me like an adult and forces me to think and understand what's going on. Unsurprisingly it's not limited to 30m when a rusty bolt is fired into the back of your neck should you dare go deeper without paying for different coloured batteries (whatever the heck they are).

For a marketing strategy, Poseidon have made their bed; it's not one I want to lie in -- I bet they have peas under the mattress.
 

RainPilot

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It is just such a shame that the poseidon will lock you out of you personally owned unit
until you send it to a dealer for servicing and unlocking even if servicing is not required
To be fair, that service is every two years and its also not difficult at all to get the service tech cert for the machine and do your own servicing.
 

lostsheep

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First of all we need to sort things out. Rebreather diving has been around since 1800. Mostly done by the military divers and with machines that costs fortunes to buy and maintain. The thing with Poseidon Rebreather, is that it was the first aim at the recreational market. It was the big revolution in diving, since the recreational market is 10000 times bigger than the technical side. Together with old school rebreather inventor/diver they came up with the MKVI 2009. It was not a rebreather and will never be one. The difference lays in the monitoring system of the diver. A system for a recreational diver has to be so much more sophisticated than a rebreather monitoring system. A "normal" rebreather can kill you in 2 min if you don't know what your are doing and can respond to different types of errors and changes inside the system. The Poseidon system is monitoring you as a diver and will tap you on the shoulder when something is about to happen. It look 15min ahead in time and tries to predict what will happen. It will then ask you to do something about this. This approach is unique. Other manufactures makes rebreathers. They tell the diver to get training and experience. Even experts do mistakes. On a Poseidon it is more likely to get information about what is going on and the being able to respond correctly. The machine is a little bit more advanced and if you don't look after your machine or have been taught the knowledge about small-little-things-that-can-go-wrong-during-startup then you will hate the machine. A good instructor will teach you all these skills and know hows. A rebreather is a simple construction of lungs, gas, sorb, hoses. This way you can always override thing and get into the water with a non working machine. Poseidon has another approach. If something is wrong on the machine, you wont get it into the water. However, it has a fail safe function. Even if you jump into the water without starting it up, it will start up and keep you alive until you are above water again. A feature no other machine can perform. The Poseidon is the safest machine in the world.

The thing for beginners are to get a SE7EN Sport. A basic startup version of Poseidons life supporting machine. It is priced very aggressive and is also upgradeable to a full Trimix +150m beast. Your choice.

If you are sick n tired of filling your tanks and looking at the manometer all the time, then this is for you. Diving with a Poseidon is a joy. You can stay down 3-4 hours with 3lit oxygen, 3lit air and 1 cartridge of sorb material.

Start off by booking a try dive with an instructor. Do an Open Water + Advanced course on the machine. This will make it possible for you to get another certificate (yeeeeaahh!) and also being able to rent a machine to begin with.


I used to know next to nothing about a Poseidon , now I know all I need to know; I am not interested at all. That was the worst sales pitch I’ve ever read.
 

RainPilot

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I used to know next to nothing about a Poseidon , now I know all I need to know; I am not interested at all. That was the worst sales pitch I’ve ever read.
If you want a more nuanced perspective from someone who is doing Mod3 dives on it, as well as the tales of folks doing 150m plus dives on it, drop me a PM.
 
https://www.shearwater.com/products/peregrine/

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