Design Philosophy

The design parameters for the O2ptima were simple:

  • Keep the breathing loop as short as possible
  • Use proven, state-of-the-art electronics
  • Be fully compatible with the Micropore ExtendAir cartridge
  • Maintain a rugged and durable package in the smallest profile possible

These parameters were originally chosen in order to produce a rebreather ideally suited to underwater cave exploration. The unique challenges of the cave environment demanded a unit that was as safe and reliable as possible while maintaining a minimal profile. The end result was a rebreather that is not only highly suitable for cave diving, but also any other type of technical diving where a direct ascent to the surface is not always possible.

By utilizing a horizontally mounted scrubber canister, the breathing loop was kept as short as possible. This helps to create the lowest possible work of breathing and allows the use of smaller diameter loop hoses. This, in turn, increases comfort and reduces diver fatigue.

Internal water traps located in the counterlungs and canister end cap, combined with the use of the Micropore ExtendAir cartridge, greatly reduce the possibility of a “caustic cocktail.”

The O2ptima CM utilizes Shearwater electronics for their proven and unparalleled reliability and functionality.

At Dive Rite, we understand that one size does not fit all, so in addition to the standard O2ptima CM features, there are a number of options to ensure a proper fit for any diver and mission. Contact Dive Rite or visit www.diverite.com for more details.

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