Technical diving
Videos
Technical diving is scuba diving that exceeds the agency-specified limits of recreational diving for non-professional purposes. Technical diving may expose the diver to hazards beyond those normally a
Diver Trevor Jackson returning from a 178 m (584 ft) wreck dive
Diver equipped for decompression dive
Technical diver during a decompression stop
An example of wreck diving; A technical diver diving the Nasello wreck in Sardinia at 34m depth.
Trimix (breathing gas)
Videos
Trimix is a breathing gas consisting of oxygen, helium, and nitrogen. It is used in deep commercial diving, during the deep phase of dives carried out using technical diving techniques, and in advance
Technical diving
…mixtures introduces other risks and is managed by equipment configuration and procedural training. To reduce nitrogen narcosis, it is common to use trimix which uses helium to replace some of the nitrogen in the diver's breathing mixture, or heliox, in which there is no nitrogen. Technical dives may…
Partial pressure gas blending equipment for scuba diving
Gas blending oxygen and helium analyser
CMAS-ISA Normoxic Trimix diver certification card