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The Technical Diving International (TDI) Full Cave Diver program consists of three sections: Cavern Diver, Intro to Cave, and Full Cave Diver.

This Cavern Diver course is designed to develop the minimum skills and knowledge for cavern and overhead environment diving within the limits of light penetration; in addition outlines specific hazards associated with cave diving. The cavern diver course in not intended to provide instruction for cave diving environments. The objective of this course is to train divers in the proper planning, procedures, techniques and hazards of cavern diving.


  • Minimum age 18, (15 with parental consent)

  • Provide proof of an Open Water Diver certification

  • Minimum of 25 logged dives

Course structure and duration

  •  4  cavern dives conducted at 2 different sites

  • Course must be conducted over a minimum of 3 days (2 days if combined with Intro to Cave)

Qualification limits

  • Daylight zone, i.e. within natural light of the cavern entrance

  • Penetration is limited to 1/3 of a single diving cylinder or 1/6th if using double cylinders

  • 61 linear metres / 200 linear feet from the surface

  • 40 metres / 130 feet maximum depth

  • No decompression diving

  • No restrictions; no areas too small for 2 divers to pass side-by-side

  • Safety stops as appropriate or necessary

  • Maintain a continuous guideline

  • Proper cavern diving equipment is used

  • No removal of life support equipment within the overhead environment


Required equipment

  • Double cylinders, (two single cylinders for Sidemount certified students) limited to the 1/6 air rule

  • Two regulators with pressure gauge and alternate air source on a 2 metres / 7 feet hose

  • Buoyancy compensator device (BCD) with power inflator

  • Exposure suit adequate for cavern environment (minimum 5mm with hood)

  • Mask and fins, NO  snorkel

  • Two line cutting devices

  • Safety reel with a minimum of 37 metres / 125 feet of guideline

  • One primary reel

  • One primary and two back up lights

  • Two dive computers or one computer and a bottom timer and depth gauge

  • Wrist slate and pencil

  • Three directional line arrows and three non directional line markers

Required skill performance and graduation criteria

  • Adequate pre-dive planning

  • Equipment check and equipment matching

  • Bubble checks

  • Specialized propulsion techniques

  • Proper buoyancy control

  • Proper body posture (Trim)

  • Proper stress analysis (detection and management)

  • Properly deploy and follow a guideline with eyes open and closed; simulating loss of visibility

  • Air share with a buddy with eyes open, following the guideline

  • Air share with a buddy with eyes closed using touch contact communication while following the guideline

  • Remove and replace mask while in contact with guideline

  • Demonstrate light / hand -signals and touch contact

  • Proper use of directional and non directional markers

  • Use of safety reel in lost diver procedures

  • Use of safety reel in lost line drill

How do I confirm pricing and booking?

Contact us via Whats App at +52 984 205 9305 or Facebook Messenger.

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