Closed Circuit Rebreathers
Recycled breathing gas, silent diving — and support that is specific to your exact unit.
Closed-circuit rebreathers recycle breathing gas and continuously manage the breathing loop's composition, scrubbing carbon dioxide and adding oxygen as it is consumed.
The benefits are long gas duration largely independent of depth, minimal bubbles, warm moist breathing gas and an optimised oxygen partial pressure throughout the dive.
The risks are different in kind from open-circuit diving, and so is the support infrastructure a rebreather diver depends on.
The failure modes
Open-circuit failures are usually obvious. Rebreather failures are frequently silent, and a diver can feel fine while the loop becomes unbreathable.
- hypoxia from insufficient oxygen addition
- hyperoxia from excessive oxygen
- carbon dioxide problems from scrubber exhaustion or channelling
- oxygen sensor failure or drift
- loop flooding
- scrubber failure
- electronics failure
Support is unit specific
CCR support is not one capability. A centre may service one manufacturer's units, stock a particular sorb and have instructors qualified on specific models.
A centre page should name supported units where possible, because a rebreather diver arriving with an unsupported unit effectively has no support at all.
- which units are supported for training
- which units can be serviced
- sorb availability and brand
- oxygen and diluent fills
- bailout cylinder hire
- sensor replacement stock
Sites where this applies
Centres with this capability
Verified means a current primary source states it; advertised means the business presents it. Confirm before travelling with gear.
Perth Scuba
ProfiledCanning Vale · Perth · WA
One of the most fully documented operations in Western Australia, covering recreational, professional, technical and freediving training alongside substantial equipment facilities.
perthscuba.com · (08) 9455 4448
Abyss Scuba Diving
ProfiledRamsgate · Sydney South & Botany Bay · NSW
A Sydney operation associated with training across recreational and technical levels, boat diving and equipment services.
abyss.com.au · +61 2 9583 9662
Dolphin Scuba Diving
ProfiledWelshpool · Perth · WA
A Perth business providing training, equipment and service support.
dolphinscuba.com.au · (08) 9353 2488
Frog Dive Sydney
ProfiledGladesville · Sydney South & Botany Bay · NSW
A Willoughby PADI 5 Star IDC founded in 1985, teaching recreational through Trimix and rebreather courses with PADI, SDI and TDI, and testing cylinders in-store.
frogdive.com.au · (02) 9958 5699
Feet First Dive
ProfiledNelson Bay · Port Stephens · NSW
A Nelson Bay SSI centre running Broughton Island boat dives and Port Stephens shore dives, with rebreather and Extended Range training.
feetfirstdive.com.au · (02) 4984 2092
Dive Swansea
ProfiledSwansea · Port Stephens · NSW
An SSI Instructor Training Center 60 metres from the Swansea Bridge shore dive, with boat trips to Moon Island and rebreather and Extended Range training.
diveswansea.com.au · (02) 4972 0940
Tasmania Tech and Dive Centre
ProfiledHobart & Derwent · TAS
The Tasmanian operation most clearly associated with technical diving services, spanning recreational and technical training with technical gas support.
Frequently asked questions
Is CCR support available across Australia?
It is concentrated in the major cities and specific technical centres, and it is unit-dependent. Confirm both sorb availability and unit support before any trip.
Should I choose a unit based on my local centre?
It is a strong consideration. Ongoing servicing, sorb supply and instructor availability matter more over time than the initial purchase decision.