IANTD Buddy Inspiration CC Rebreather - page 3
Decompression efficiency:
This advantage only applies to closed circuit rebreathers, not oxygen or semi-closed rebreathers. Closed-circuit rebreathers maintain a constant partial pressure of oxygen in the breathing gas at its maximum safe value throughout the dive. This means that the non oxygen portion of the gas (the part that determines decompression obligations), is kept at a minimum, allowing the diver to stay longer at depth without incurring a decompression obligation, and also to speed up the decompression process whenever an obligation is incurred.
Silence:
With each exhaled breath, a diver using conventional scuba releases a large burst of noisy bubbles. The effect of this on the behavior of marine-life varies, but in most cases, fishes behave warily and are reluctant to allow a diver to approach closely. As closed-circuit rebreather eliminate bubbles entirely, divers are able to approach marine life much more closely while disturbing behavioral patterns much less severely. This is especially important for specimen collection, photographic and videographic activities.
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