Technical Courses


TDI Nitrox Diver Course is an entry level course for divers wishing to continue their diver education and utilize enriched air nitrox as a breathing gas to extend no decompression limits at depth.  This is a table-based nitrox course.    Find Out More

Intro To Tech

This TDI course will guide students through the special techniques, planning procedures and skills that set technical diving apart from traditional sport diving. It will show them how to improve their dive planning methods, in-water skills and streamline their existing gear configuration. The specific skills th... Find Out More

Advanced Nitrox

The TDI Advanced Nitrox Course qualifies divers to use enriched air nitrox from EANx 21 through EANx 100 within your current certification level to a maximum depth of 130 feet during dives that do not require staged decompression. Often taught in conjunction with other courses, this can be considered the foundation ... Find Out More


The Helitrox course examines the theory, methods and procedures for planned stage decompression diving utilizing Helium in the breathing mixture.   The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 150 feet. The most com... Find Out More

Deco Procedures

This course is usually not offered as a stand-alone.  Typically offered in conjunction with Helitrox or as remediation for a student needing more guidance on carrying a deco bottle properly. Planned stagged decompression is not something that sport divers do or have been taught. The TDI Decompression Procedures... Find Out More


As your motivation to explore progresses you will find that you may want to go deeper to dive that wreck that is part of history or that cave system that you have read so much about.   One of the major limiting factors of going deeper is narcosis; TDI’s Trimix Diver course shows how to minimize the effect... Find Out More

Extended Range

This is class is usually not offered as a stand-alone course.  Typically offered in conjunction with Trimix or as remediation for a student needing more guidance on carrying two deco bottles.  Certain areas of the world provide spectacular dives at depths deeper than 130 feet but you will not have access (... Find Out More

Advanced Trimix

The TDI Advanced Trimix course provides the training required to competently and safely utilize breathing gases containing helium for dives that require staged decompression, utilizing nitrox and oxygen (O2) mixtures during decompression to a maximum depth of 100 metres / 330 feet. The objective of this course is to... Find Out More

Advanced Wreck

The TDI Advanced Wreck course is the next step for any diver that has taken a wreck diver course. During this course, your TDI Instructor will teach you the proper techniques for locating and planning a penetration dive. The TDI Advanced Wreck course is commonly taught with other popular TDI courses such as Advanced... Find Out More