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It’s not elevated po2. That’s a common misperception. I dive at 1.0 which allows 5 hrs per day and no REPEX penalty

There are certain experiences that benefit from being on the bottom - photography, spear fishing, harvesting. I actually make a living spending 5 hours a day in 20’ of water. .

I’m not too concerned. It’s all kind of ridiculous anyway. All instruction should be aligned with gas physiology and not the arbitrary leveling that’s occurred in both oc and cc.

I teach Mod 0. The training was developed specifically for the RD1 rebreather as the prerequisite to Mod1. There is also a Mod0+ module which is a really amazing way to dive.

Most people add a Shearwater.

I’ve read lots of misunderstandings here about o2 only units. You do not spontaneously combust at 20’ depth. Oxygen exposure limits are dose dependent. If using a pO2 display and are trained in loop flushing techniques it’s very easy and reasonably safe to dive to 30’, and for very long dives...

We make and offer these extensions… works a miracle. https://www.underseatools.com/products/valve-extension-knobs

100%

there is other chemistry being evaluated - it wont be found on the internet.

NASA isn't blowing money - they 'need' improved scrubber designs. It just costs 100x as much in the govt sector as in the real world. There are other scrubber chemistries already being evaluated both privately and by government agencies. >10x capacity.

My two cents - there really isn’t much ‘innovative’ in the marketplace. Rebreathers have been around for over 100 years. We’ve seen plenty of improved features, but not much new ‘technology’. Solid state sensors are an exception, and I’d anticipate new technology in absorbent chemistry at some...

Dive-ready, at retail, the unit is less than $3k. From there you can add a monitor of choice, and an orifice, and be in a mCCR for less than $5k

absolutely, among other things. The two highest risk phases of any dive are the first 20', and the last 20'. These tend to be the most task loaded (transitions to/from water, fixing tools/accessories, riding out decompression, dealing with surge/waves, etc). On rebreathers, this is also where...

1

huge benefits - warmer, longer durations than a single cylinder, no bubbles (for wildlife/stealth). In my case, doing working dives, I can stay at work without swapping cylinders and breaking stride in what Im doing. theres no 'massive complexity' in an oxygen rebreather. Its really no more...

RD1 can be dived O2 only or as a simple mCCR. The 20 foot depth limit is not hard and fast. An O2 unit with a pO2 display can be safely dived deeper. Cost of ownership is very low. A dive ready unit is less than $3k. Sorb/fills works out to $3-4/hr. All field or dive shop serviceable.

great project that we supported 2004-2007

Hey all - havent been here to Scubaboard in a million years, but happy to answer some questions on RD1 etc. First, and most importantly, a rebreather is a rebreather is a rebreather. I've been trained on 3, have dived 8 extensively (>1000 hrs) including over a dozen sub-400' dives with custom...

Our patent isn’t focused on the inflatable itself - these have been used for decades. Although we have made improvements to the overall concept through our work. The novel element protected is the means in which life support is introduced and replenished within the inflatable. It’s a very...

RD1 is purpose built for shallow water work. We’ve placed about 15 units in the field and I’ve personally put more than 300 hours on the unit. Perfect for shallow excursions and provides a gateway to mix units with simple upgrades.