CVN – Cavern Diver

This is an introductory cave diving course. A cavern is defined as a cave from which one can always see direct sunlight and the certificate is further limited by the greatest depth of 30m. During this course, you gain knowledge about the cave environment, equipment and configuration, accident analysis, psychological aspects of cave diving, communication, reel and line use, dive and air consumption planning, accident prevention and procedures and techniques of cavern diving.


Theoretical knowledge:

  • Proper line and reel use
  • Line-tracking techniques
  • Procedures for contact by touch (no visibility)


Practical exercises:

  • Nitrox gas mixture analysis and determining the dive limits
  • Line and reel use
  • Line-tracking with and without a mask
  • Sharing air with and without sight
  • Special swimming techniques appropriate for cave diving (without raising silt)
  • Various mock scenarios of searching for/tracking a line, sharing air, apnea swimming/without sight
  • Four (4) dives in two (2) different caverns


Course duration:

3 days

  • Theory: 6-8 hours
  • Open water exercises and dives: 4-6 hours


Candidate prerequisites:

  • Must be at least 18 years of age
  • CSU and AOW certificates or equivalent
  • Completed medical statement (or a medical certificate not older than one year)
  • Completed liability release and assumption of risk form



Included in the price:

  • ANDI Adria decal, diploma and certification card

Not included in the price:

  • Transport to locations, equipment rental, cylinder re-fills




Enrolment is only accepted after prepayment/deposit. In the case of unauthorized absence from the course, there is no return of the deposit.