CCR Archives - Underwater Journal

By itself the Optima CM is a fully functional, electronic closed circuit oxygen rebreather that can be readily fastened to most types of scuba harnesses like it is here on Jared Hires’ Nomad Side Mount system.

Dive Rite’s O2PTIMA CM Rebreather

February 22, 2021 Walt Stearns Dive Gear, Diving, Gear Reviews

“Incredibly versatile, self-contained, and travel ready.” That’s how Dive Rite describes their O2ptima CM rebreather. It is an electronic, fully-closed system,[…]

A rebreather diver who's CCR unit is equipped with a Bailout Valve (BOV).

Rebreather Diving: To BOV or not to BOV?

September 26, 2015 Walt Stearns Dive Ed, Dive Gear, Diving

The general rationale to a having bailout valve (BOV) on your rebreather is to have the option of rapidly switching[…]

Rebreather Diving: The Caustic Cocktail

September 25, 2015 Walt Stearns Dive Ed, Dive Gear, Diving

A cautionary tale of my personal experience with the dreaded mixture.

Rebreather Diving: CCR Diver Lingo

August 29, 2015 Walt Stearns Dive Ed, Dive Gear, Diving

Users guide to understanding those confusing acronyms commonly used by Rebreather Divers. I’ve never considered myself to be a “tech[…]

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