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tdiTDI Courses

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From Basic Nitrox Diver to Advanced Trimix Diver, Ocean Zone Divers offer all levels of Technical Training Courses. Follow the links to the left to get more details of a specific course.

Ocean Zone Divers terms and conditions apply to all of our courses.

TDI - Technical Diving International
TDI was formed in 1995 by Bret Gillian a former Director of IANTD and is now the world’s largest technical diving agency offering all level technical courses from Nitrox to Mixed Gas Rebreather.

Got something to ask us ?

We are Technical diving education professionals and over the years we have been asked almost everything, feel free to look at our most commonly asked technical diving questions or contact us directly.