TDI Cavern Diver - £340 

This 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. It is a recreational cave diving course using SINGLE CYLINDER. Double cylinders are not to be used unless the student is planning to enrol in the Intro /Full Cave Diver training program. A full outline of the course is given below

What do I need to start?

Advanced Open Water
Have a minimum of 25 logged dives
Be 15 years of age

The course can be conducted using normal scuba-gear with a single back mounted cylinder. Ideally single cylinders should be fitted with an H or Y valve but this is not essential.

If students are already using twin cylinders these can be used but they are to be fitted with an isolation manifold. It is recommended that students use a 2m long hose on the primary regulator which can be purchased during the course. Students will also need at least 2 lights (the 3rd being natural light) and 2 lines cutters.

The individual should carry a safety reel and a finger spool and the team are to carry a primary reel. It is recommended that each diver carries a spare mask.

What will I do?

An evening worth of theory and an hour of pool training to cover techniques used in the overhead and cave environment.

The Cavern Course is then run over a further 2 days, usually at Hodge Close in the Lake District. During the course students will be taught the correct use of lines and reels and the necessary emergency procedures to cover eventualities such as loss of gas, loss of lights and lost lights drills. A total of four dives will be completed. Students will be required to complete valve shut offs at the end of each dive.

Penetration will not exceed 61m and students will run a continuous line to surface. There is an exam which is usually marked and reviewed during the second evening of the course.

What's included in the course fee?

NACD Cavern/Cave Diver Workbook
Registration Card & Certificate

What’s next?

On successful completion students will have the certification and skills to dive the cavern area anywhere in the world, from UK mines through to caves in Mexico, France and Florida. The next step is to complete Introduction to cave. Intro Cave can be completed using a single back mounted cylinder although most divers will have transitioned to twin sets well in advance of attending. It is also recommended that students have completed Advanced Nitrox & Decompression procedures prior to attending.

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