Introduction

This course is the third (3rd) stage of training in the series of TDI’s cave diver development program.

Advanced cave dive planning, the practical execution of different types of cave systems and scenarios divers encounter are presented. This cave diving course is not intended to prepare divers for evaluating all facets of cave diving. The objective of this course is to expand and critique previous skills accomplished in the Cavern and Introductory Cave Diving programs. Emphasis is placed upon dive planning and skill perfection through actual cave penetration

Qualifications of Graduates

Upon successful completion of this course, graduates may engage in cave diving activities without direct supervision so long as the following limits are adhered to:

1. Penetration is limited to the one-third (1/3) air rule

2. Forty (40) msw / one hundred thirty (130) fsw maximum depth

3. No gear removal in cave

4. Safety and decompression stops appropriate or necessary.

5. Maintain a continuous guideline.

6. Proper Cave diving equipment is used.

Who May Teach

Who may teach this course:

1. This course may be taught by any active TDI Cave Diving Instructor.

Student – Instructor Ratio

Academic:

1. Unlimited, so long as adequate facility, supplies and time are provided to insure comprehensive and complete training.

Confined Water (Swimming pool-like conditions):

1. N/A.

Cave Dives:

1. A maximum of three (3) students per Instructor. However, it is the instructor’s discretion to reduce this number as conditions dictate.

Student Pre-Requisites

The student must:

1. Be a minimum age of eighteen (18).

2. Have a minimum certification of TDI Introductory Cave Diver or equivalent.

Course Structure and Duration

Open Water Execution:

1. Eight (8) cave dives are required with a minimum accumulated bottom time of two hundred forty (240) at three different sites.

2. At least one (1) of these sites should be a location not utilized in training during the Cavern or Introductory Cave Courses

3. For divers entering the cave program without Cavern / Introductory Cave Diving certification, sixteen (16) cave dives with four hundred twenty (420) minutes of total bottom, (not including decompression time are required).

Course Structure:

1. TDI allows instructors to structure courses according to the number of students participating and their skill level.

Duration:

1. The suggested number of classroom and briefing hours is six (6).

2. Course must be taught in no less than four (4) days.

3. If combined with Cavern and Intro to Cave diving, course must be 7 days long.

Administrative Requirements

The following is the administrative tasks:

1. Collect the course fees from all the students.

2. Ensure that the students have the required equipment and certifications.

3. Communicate the training schedule to the students.

4. Have the students complete the Liability Release and Medical history forms.

5. The Instructor must review the Liability Release and Medical Forms before starting on the course.

Upon successful completion of the course the Instructor must:

1. Complete the Student Registration Form and send the Registration Form to TDI HQ.

4. Award Card.

Required Equipment

The following are the required for this course:

1. TDI Cavern and Cave Manual.

Other suggested reading materials:

1. NACD Art of Safe Cave Diving

2. Basic Cave Diving – A Blueprint for Survival.

3. CDAA - Cavern / Sinkhole Manual

4. NSS – CDS Cave diving manual

5. Cavern Measureless to Man

6. The Darkness Beckons – Martyn Farr

The following equipment is required for each student:

1. Dual cylinders, volume appropriate for planned dive, student gas consumption.

2. Two independent first and second stage regulators. One regulator equipped with a long hose at a recommended minimum length of two (2) meters / seven (7) feet.

3. Submersible pressure gauge.

4. Buoyancy Compensator with power inflator.

5. Exposure suit adequate for diving environment.

6. Mask and fins - NO snorkel.

7. Two (2) line cutting devices.

7. Three (3) battery powered lights – one (1) primary and two (2) back-ups, each with a with burn time suitable for the planned dive time.

8. Safety reel with a minimum of thirty seven (37) meters / one hundred twenty five (125) feet of guideline.

9. One (1) primary cave-diving reel with length appropriate for intended dive.

10. Computer or watch (bottom timer) and depth gauge.

11. Slate or wet notes with a pencil

12. Submersible dive tables or back up dive computer.

13. Three (3) directional line arrows.

14. One (1) non- directional line marker.

15. Gap reel with fifteen (15) meter / fifty (50) feet of guideline.

16. It is recommended that the team properly mark decompression cylinders and stage them, in any

dive where decompression is planned, at least one (1) stop deeper than the planned decompression obligation.

Instructor must use full cave diving equipment during all water exercises.

Required Subject Areas

The following topics must be covered during this course.

1. Policy for Cave Diving.

2. Gas matching procedures and management to include dissimilar volumes.

3. Psychological considerations.

4. Equipment Considerations

A. Cylinder options.

B. Regulator options.

C. Buoyancy compensator / harness options.

D. Reel options.

E. Proper weighting.

F. Equipment configurations.

5. Communication

A. Hand signals.

B. Light signals.

C. Touch contact signal.

6. Swimming Techniques

A. Body posture/ Trim

B. Buoyancy control

C. Line following

D. Propulsion techniques

7. Physiology

A. Breathing techniques.

B. Stress management.

C. Decompression Theory and its application to cave diving

8. Cave environment.

A. Geology.

i. Bottom.

ii. Ceiling.

B. Local access requirements.

C. Land owner relations.

9. Conservation.

10. Problem Solving

A. Emergency procedures.

B. Equipment failure.

C. Silting conditions.

11. Accident Analysis.

12. Review of Dive Tables and Decompression theory.

13. Cave diving etiquette

Required Skill Performance and Graduation Requirements

The following land drills must be covered during this course:

1. How to properly deploy a guideline.

2. How to properly follow a guideline.

3. Use of safety reel in lost diver procedures.

4. Use of safety reel in lost line drill.

The student must perform the following S-drill and skills during all dives:

1. Demonstrate adequate pre-dive planning.

2. Equipment check and gear matching.

3. Bubble check.

4. Demonstrate specialized propulsion techniques in varying types of flow.

5. Demonstrate proper buoyancy control.

6. Demonstrate proper body posture.

7. Demonstrate proper stress analysis (detection and management).

The student must perform the following in-water skills during cave dives:

1. Properly deploy a guideline.

2. Properly use directional and non directional line markers.

3. Properly follow a guideline with eyes open and closed (simulating loss of visibility).

4. Air share with a buddy with eyes open , following the guideline.

5. Air share with a buddy with lights off and eyes closed and use touch contact, following the guideline.

6. Remove and replace mask while in contact with guideline.

7. Demonstrate light / hand -signals and touch contact.

8. Conservation and awareness techniques.

9. Referencing as back-up navigation.

10. Demonstrate adequate anti-silting techniques.

11. Simulate a primary light failure, and use back light to exit the cave.

12. Demonstrate lost line and lost diver drills.

13. Demonstrate to use of reels to perform jumps and gaps required in circuits and traverses to maintain a continuous guideline to open water.

In order to complete this course, students must:

1. Satisfactorily complete the TDI Cave Diver written examination.

2. Perform all land drills and cave dive requirements safely and efficiently.

3. Demonstrate mature, sound judgment concerning dive planning and execution.

4. Maintain an appropriate level of awareness and respect for the cavern environment.

5. Log all dives.