Fathom mCCR

FAQs about our Fathom mCCR

Is it hard to reach the valves with upright onboard cylinders?
No more so than a set of doubles. There are a number of advantages to having the valves upright, including, improved trim and hose routing; however, if you prefer to have your onboard cylinders inverted, it’s easy enough to reconfigure them that way.
Is the increased intermediate pressure (IP) hard on the first stage seat?

No. In fact, the first stage seats have less wear since they are holding back less pressure, i.e., the differential between the tank pressure and intermediate pressure is lower. An increased intermediate pressure does require LP hoses rated for the higher working pressures and higher durometer o-rings in the oxygen MAV.

Why mCCR?

eCCRs are popular because there’s a feeling of safety, that an automated system is going to keep you out of trouble. This perception is not completely unfounded and gets reinforced as divers make more and more safe dives. The fact is you could probably make any number of incident-free dives on an eCCR without looking at the handset or HUD. Of course, no one would recommend that because we all know things do happen: solenoids fail, batteries go dead, oxygen doesn’t get turned on, etc. Your next dive may be the one where knowing your pO2 saves your life.

Is the mantra to “know your pO2” and admonishments of CCR instructors everywhere enough? I firmly believe that some systems promote better habit formation than others and at the end of the day, those habits are what’s going to keep us alive when failures occur. An mCCR is not a panacea but actively promotes good habit formation.

FATHOM Dive Systems, LLC

4113 NW 6th St, Suite A
Gainesville, FL 32609

+1 352.213.6575


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