Archive for the 'Rebreathers' Category

O2ptima Rebreather Training and Logbook Notes

by Jordan Carriveau The following references some of my experiences during my first Closed Circuit Rebreather (CCR) course that I took in January 2006. We used the O2ptima, Dive Rite’s new CCR. My instructor was Mark Derrick, based out of Ft. Lauderdale, Florida. My open circuit (OC) diving background included: Dive master, Cave, Side mount, [...]

Choosing a Rebreather

Choosing a rebreather can be a difficult process. Before investing in a rebreather, there are many things to consider. A more sophisticated rebreather doesn’t mean it’s a better rebreather. Just like you purchased your open circuit gear, you must determine how you plan on using the rebreather. The difference between the available rebreathers on the [...]

Rebreather Photo Gallery

You can see a photo gallery at divingindepth.com click here

Mixed-Gas Closed-Circuit Rebreathers

Mixed-gas closed-circuit rebreathers (CCR) improve upon SCR designs. CCRs are the most advanced rebreather systems and require the most upkeep and maintenance. They are also the most expensive and complex to operate and require the most extensive training. CCRs offer the best gas economy, reduced decompression obligations, and provide extended depth capabilities. They operate by [...]

Semi-Closed Circuit Rebreathers

Semi-closed circuit rebreathers (SCR) allow for the use of an inert gas to dilute the oxygen, which allows you to dive deeper. The base gas that is typically used is an EANx (nitrox) gas mix. An SCR is very similar to oxygen closed-circuit rebreathers except for the fact that they must have functionality to accommodate [...]