CCR cave Diver


Venturing deeper into caves and discovering more and more passages may bring the need for additional time for exploration and redundancy for safety. Being an experienced open water GUE CCR diver and avid GUE cave diver will lead to consideration of using the CCR advantages during cave explorations. 

The GUE Closed-Circuit Rebreather Cave Diver course will prepare already experienced divers to safely use CCR technology while cave diving. 


The GUE Closed-Circuit Rebreather Cave Diver course is designed to provide experienced GUE cave and closed-circuit rebreather divers with the additional knowledge and practice needed to safely use closed-circuit rebreathers in a cave environment.


This course is an advanced level closed-circuit rebreather course aimed at teaching mastery level skills, knowledge, and procedures appropriate for the cave environment. 

Applicants for a GUE CCR Cave Diver course program must:

  • Be a minimum of 21 years of age.
  • Be physically and mentally fit.
  • Be a non-smoker.
  • Be able to swim.
  • Obtain a physician’s prior written authorization for use of prescription drugs, except for birth control, or for any medical condition that may pose a risk while diving.
  • Have passed the GUE Closed-Circuit Rebreather Diver Level 1 course. 
  • Have passed the GUE Cave Diver Level 2 course. 
  • Have conducted at least 25 dives beyond GUE Cave 2 certification. 
  • Have conducted at least 50 dives beyond GUE Closed-Circuit Rebreather Diver Level 1 certification. 
  • For a full list of course prerequisites, click here.

The Closed-Circuit Rebreather Cave Diver course is normally conducted over four days. It requires a minimum of five dives and at least thirty-two hours of instruction, encompassing classroom lectures, land drills, and at least ten hours of in-water work. 



    The use of diver’s propulsion vehicles (DPV) or scooters has a long tradition in cave diving. DPVs are often used as an important tool to further increase the penetration distance or to carry additional heavy dive equipment into the cave.

    Since failure of a DPV in an overhead environment might expose divers to a high level of risk, an in-depth knowledge of gas management and contingency planning is required to use a DPV safely during such dives which DPV Cave course provides.


    Cave survey and cartography are highly important aspects of cave exploration and are useful for all advanced cave divers. In this special GUE class, divers will learn all the required skills to conduct a full survey of the cave starting from an in-water survey to drafting a map of the cave.

    During the class, team-based survey procedures and dive planning are introduced together with additional tools and specialized equipment.