TDI Decompression Procedures Diver
Plan deeper dives, execute staged decompression, and step fully into technical diving
Overview
The TDI Decompression Procedures Diver course is designed to train divers to plan and conduct dives requiring staged decompression.
This course marks the transition beyond recreational limits, introducing decompression theory, gas management, and the procedures required to safely manage decompression obligations.
Divers will learn to use decompression gases, manage ascent profiles, and execute dives with greater depth, time, and complexity. When combined with Advanced Nitrox, this course forms the core foundation of all technical diving progression.
At N9BO℠, this is where diving becomes fully procedural — focused on discipline, planning, and precise execution.
Course Facts
- Course name: TDI Decompression Procedures Diver
- Level: Technical decompression course
- Minimum prerequisites: Minimum age 18, Advanced Diver or equivalent, proof of 25 logged dives
- Ratio: A maximum of 4 students per instructor (small groups recommended for quality training)
- Configuration: Technical configuration (backmount doubles or sidemount) with stage/decompression cylinder
- Depth / environment: Maximum 45m / 150ft with staged decompression required
- Format: Academic development + confined/open water skills + decompression dives
- Duration: Typically completed in 3 days (Minimum 4 open water dives; 2 dives must be deeper than 30m / 100ft)
What You’ll Learn
- Plan and execute staged decompression dives.
- Use decompression gases up to 100% oxygen.
- Manage ascent profiles and decompression schedules.
- Perform gas switches safely and efficiently.
- Apply contingency planning and problem-solving strategies.
Prerequisites
- Be at least 18 years old.
- Be certified as an Advanced Diver or equivalent.
- Provide proof of at least 25 logged dives.
- Be medically fit for diving.
FAQ
This course is for divers who want to move beyond no-decompression limits and begin structured technical diving with planned decompression.
Unlike recreational diving, decompression diving requires planned stops during ascent to safely eliminate inert gases and avoid decompression sickness.
You will complete multiple dives including staged decompression dives, practice gas switching, and execute dive plans with increasing complexity and depth.
Yes. It is commonly taught alongside TDI Advanced Nitrox, forming the foundation of technical diving.
You will be qualified to plan and conduct decompression dives up to 45m within conditions similar to training.
Ready to Go Beyond Recreational Limits?
Send us your certification level and experience. We’ll help you safely transition into decompression diving with the right configuration and training plan.
Go Pro with TDI Decompression Procedures Instructor
Take your technical diving skills to the professional level and start teaching decompression diving. Delivered by a TDI Instructor Trainer, this pathway builds the control, discipline, and instructional ability required to train divers to TDI standards.
