Back To Top

Select language: Perth Scuba Australia Perth Scuba Japan Perth Scuba China

Call us (08) 9455 4448

Perth Scuba

Perth Scuba

Deep Cavern


Perth Scuba offers the Cavern Divers Association of Australia (CDAA) Deep Cavern Diver Course rating at $875pp.

The Course:

The Deep Cavern Course is the amalgamation of skills and knowledge necessary to safely dive in Cavern andCave Divers Association of Australia by Andrew Fock Sink hole rated sites. Training covers areas that may have zero visibility and the potential for unlimited visibility. A maximum training depth of 40m is recommended.

The Deep Cavern course content will consist of the equivalent of five full days of theory and diving as a minimum. The Course structure can be scheduled over non-consecutive days, evenings and weekends and need not be taught over consecutive days.

Cavern Site:

Defined as body of water which has a maximum depth of 20 metres, slight overhangs, near vertical ascents and where daylight is always visible (eg limestone caverns, dams, flooded quarries, lakes etc). The maximum linear penetration allowed is 40 metres from the surface.

Sink hole Site:

Defined as a body of fresh water which can have large passages (no restrictions too small for two divers to swim adjacent to each other) and which exceeds 20 metres in depth. The maximum linear penetration allowed is 60 metres from the surface. The CDAA recommends a maximum depth of 40m on air.


Before commencement of a CDAA Deep Cavern diver training program the candidate must:

  1. Hold an Advanced Open Water level recreational SCUBA diver certification or equivalent and be qualified as an Open Water diver for a minimum of 12 months.
  2. Have logged a minimum of 25 dives (post Advanced Open Water level) totalling a minimum of 20 hours, including at least two night dives and five dives deeper than 25 metres.
  3. Be a minimum of 18 years old.
  4. Successfully complete a diving medical statement. If any contraindications are flagged then a full diving medical examination will be required.
  5. Hold a Deep level recreational SCUBA diver certification or equivalent.

Excludes:Cave Divers Association of Australia by Steve Trewavas

The Deep Cavern Diver Course excludes gas and dive equipment.


To include CDAA history, cave geology, equipment considerations, pre-dive checks and safety drills, buoyancy and anti-silting, communications, reel and guideline use, gas management and calculation, physiological considerations, access procedures, dive planning, emergency procedures, hazards, accident analysis.

Equipment Requirements:

Minimum requirements include:

  1. Suitable exposure suit (for >10 degrees water)
  2. Mask and fins (straps taped or replaced with velcro/spring heels respectively)
  3. Small sharp cutting device
  4. Dive computer with back up depth gauge and bottom timer or 2 dive computers

  5. BCD or Wing/Back plate/Harness
  6. Twin cylinders combined minimum capacity of 2200 litres
  7. Two regulator first stages each with one second stage attached, one of which has a hose that is at least 2 metres in length
  8. One primary and two back up lights
  9. Submersible decompression tables
  10. Wet notes or pencil and slate
  11. Two submersible pressure gauges (SPG) if using a twin independent system (only 1 required if using an isolation manifold)
  12. Primary reel with a minimum of 100m of line (may be supplied by instructor)Cave Divers Association of Australia by Andrew Fock

Skill Sessions:

To include reel use, line placement techniques, reel locking and abandonment, blackout line following, air sharing while following a line, buoyancy and anti-silting techniques, communications, emergency management, S drills, flow checks, full valve shut downs.

Supervised Dives:

One confined water dive in pool or cavern 2-3 hours.

Six training and site dives in CDAA rated Caverns and Sinkholes.

The Dives:

Logue Brook Dam 3 Dives

Lake Stockton 4 Dives

After your training by a Cave Diver Association of Australia certified Instructor – it’s a trip back to the store as a qualified Perth Scuba Deep Cavern Diver…


You are now officially a member of Perth Scuba Tek’s elite and a part of the most active dive club in Perth. We are diving next week for free… want to join us? Welcome Aboard!

Contact us to book onto one of Perth Scuba’s CDAA Deep Cavern Diver  Courses.

Featured Course & Tours

TDI Technical Dive Courses

TDI is the largest technical certification agency in the world.  As one of the first agencies to provide training in mixed gas diving and rebreathers, TDI is seen as an innovator of new diving techniques and programs which previously were not available to the general public.  Training with TDI has provided divers with the opportunity to see such wrecks as the Andrea Doria, Luisitania and the Prince of Wales.  TDI divers have explored underwater caves in Spain, Australia and Mexico and assisted as support divers on world record freedives done in the Red Sea.

Read more

Join Our Mailing List