Discover Rebreather

By Brian Rossman

Last Saturday I had the chance to do a discover rebreather dive at an area pool with Aquatic Adventures of Michigan. I got to try out a Poseidon MK VI. Both Tom and Steve are very knowledgeable and were very helpful in answering any questions.

Having done a fair amount of research prior to taking this and listening to the presentation at Great Lakes Shipwreck Festival I expected that it was going to be something I enjoyed. I underestimated just how nice it really was.

First off I am a bit of an air hog. My SAC has been improving over time but it is still a bit high; on a CCR this is no longer an issue. Longer bottom times and less weight to haul around. Both good.

Fixed PO2: Having a good understanding on the benefits of nitrox – mostly more bottom time. The CCR takes the benefits to its max while not impacting max depth the way nitrox will.

Weight: Diving HP120 tanks when doing open circuit the weight difference is amazing. Less gear to move to the dive sight, the gear you move weights a LOT less. The other thing about having less bulk is I felt way more maneuverable in the water. The ability to flip, roll, and hang upside down was great fun.

Only drawback was that, as the instructors pointed out, buoyancy control is totally different. I had some major issues initially with starting to become positively buoyant when I didn’t want to. I had this mostly sorted out by the end but I know it would be a major focus when I take the rebreather class.

The price isn’t as bad as it might seem if you plan on diving enough and with tri-mix. Which is my intent in time.

All I all I loved the experience and have added a Poseidon 7 to my wish list and the class as the next one to take after I take shipwreck and deep.

My SCUBA wish list would really be helped out by winning the lottery even more so than before.

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