Technical divers require advanced training, develop extensive experience with mixed gasses, and use specialized equipment to complete their dive objectives.

  

 Physical Ceilings

Technical divers plan dives that may include staging decompression stops and following gas management rules. Equipment redundancy is often vital, as technical divers are often unable to ascend directly to the surface.

These are some of the types of overhead diving that prevent a diver from going directly to the surface: Cave Diving, Wreck Diving,  Ice Diving, and Deep Diving.

 Limited Visibility

Technical dives can occur in water where the diver’s vision is limited, which emphasizes the need for advanced training. Low-light conditions can be caused by:  Silt, depth, the dive environment and water conditions.     

Gas Mixes

By lowering oxygen and adding helium and/or nitrogen to the breathing mix, divers reduce the negative effects oxygen has at certain depths.  Technical divers study the effects gases have on their body, so they can make an informed decision when choosing which gases they dive with, and what depths their gas mix or mixes help, rather than hurt, them.  

Equipment