During our TDI Advanced Nitrox & Decompression Procedures (ANDP) course, we will focus on the following aspects (on top of reviewing everything else from previous levels): Underwater: - Refining fundamental skills for technical diving - Advanced buoyancy control, trim, and propulsion with stage cylinders - Gas switching procedures and verification protocols - Proper positioning and control during decompression stops - Deployment and use of a DSMB/lift bag for free-floating decompression - Handling multiple gas mixtures and switching at designated depths - Emergency gas-sharing and regulator failure management - Problem-solving in a decompression environment: gas loss, valve failures, omitted deco stops On Land: Land drills and simulations of procedures: - Gas analysis, labeling, and marking of decompression gases - Dive planning and contingency planning (gas loss, extended decompression, omitted stops) - Team-based gas matching and decompression schedule verification - Proper stage cylinder rigging and gas switch protocols Briefings and debriefings: - Comprehensive review of all aspects and skills Whiteboard presentations and discussions: - Decompression theory: bubble mechanics, ascent rates, and off-gassing strategies - Physiological considerations: oxygen toxicity, CO₂ management, hypoxia risks - Psychological aspects: stress management, task loading, decision-making under pressure - Dive computer vs. tables: different decompression models and their applications This course will equip you with the knowledge and practical skills to safely conduct planned decompression dives, forming the foundation for more advanced technical diving disciplines.