TDI · Open Circuit
TDI Advanced Nitrox & Decompression Procedures
The most popular technical certification, combining two courses to accelerate decompression to 45 metres.
The TDI Advanced Nitrox and Decompression Procedures course is regarded by many as the entry-level technical certification and is the most popular of all technical diving courses. It combines two courses to give you the benefit of accelerating decompression using high-oxygen mixes.
It can be taken on twins or sidemount and certifies you to plan and conduct decompression dives to a maximum depth of 45 metres. For most divers this is the natural starting point on the technical pathway, and it pairs perfectly with our deeper Extended Range and Trimix courses or a move across to closed circuit.
What you'll learn
- Combined enriched air and staged decompression diving to 45 metres
- Accelerating decompression using high-oxygen mixes
- Planning and conducting deco dives on twins or sidemount
- Equipment configuration and team diving procedures
Prerequisites
- SDI Advanced Adventure Diver, Advanced Diver or equivalent
- Proof of 25 logged open water dives
What's included
- TDI Advanced Nitrox and Decompression Procedures certifications
- Classroom theory and dive planning
- Staged decompression training dives
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