
Originally Posted by
RN
You can't judge IANTD based on those charts. While they do have a variety of courses, the prerequisites vary. For example, you don't have to take the Recreational Trimix Diver course to take the Advanced Recreational Trimix course. In fact, you don't even have to take Advanced Nitrox to take Advanced Recreational Trimix. You also don't have a be a full Cave Diver to do the Technical Cave Diver. The prerequisite for Technical Cave Diver is to already be certified in Advanced Nitrox or Advanced Recreational Trimix or have sufficient experience or training as determined by the instructor.
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