SDI Advanced Diver minimum requirements:

• Complete four SDI, TDI, or ERDI Specialty Diver courses or equivalent; only 1 course without dives, may be credited towards the SDI Advanced Diver development program, with the exception of SDI Computer Nitrox

• Proof of 25 logged dive

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Specialty Diver Courses:  TWD recommends

Computer Nitrox

Deep Diver

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Other courses are available to enhance your experience.