TDI Advanced Nitrox Diver

The TDI Advanced Nitrox Diver program qualifies divers to dive to 40m for dives which do not require decompression stops, using nitrox mixtures up to and including 100% oxygen.

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TDI Decompression Procedures Diver

The TDI Decompression Procedures Diver program qualifies divers to dive to 45m and to perform required decompression stops using a single gas mixture (unless they also hold the Advanced Nitrox Diver certification).

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TDI Advanced Nitrox & Decompression Procedures

TDI Advanced Nitrox and Decompression Procedures Diver: this program qualifies divers to dive to 45m and to perform required decompression stops.

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TDI Trimix Diver

The TDI Trimix certification can be taken either with or without the Extended Range (or equivalent) certification.

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TDI Advanced Trimix Diver

The program qualifies divers to perform dives outside of training to depths up to 100m while using helium-based breathing mixtures (including normoxic mixtures) to both reduce the END and increase the MOD to perform required decompression stops using any mixture of EANx up to 100% oxygen.

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TDI Gas Blender

TDI Nitrox/Trimix Blender: learn to blend nitrox by partial pressure and membrane methods, for mixtures from 21 to 100%.

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TDI Cavern Diver

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.

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TDI Intro Cave Diver

This course is an introduction to the basic principles of cave diving utilizing a single primary guide line. Introductory cave diving is the second level in the development of safe techniques for cave diving, directly building upon the cavern diver course.

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TDI Full Cave Diver

This course is the third (3rd) stage of training in the series of TDI’s cave diver development programs. Advanced cave dive planning, the practical execution of different types of cave systems and scenarios divers encounter are presented.

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