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In regions where helium availability is scarce, the TDI Extended Range course equips divers with skills to utilize compressed air for deep dives up to 55 meters/180 feet. The course covers proper techniques, equipment requirements, and hazards of deep air diving, enabling divers to perform staged decompression dives using nitrox mixtures or oxygen.

Course Overview:

This course targets TDI Advanced Nitrox/Decompression Procedures divers seeking advanced technical dive training. It offers comprehensive instruction on deep air diving techniques, expanding skills, and enabling exploration of deeper areas of interest.

Course Prerequisites:

  • Minimum age of 18

  • Certification as a TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver, or equivalent

  • Proof of a minimum of 100 logged dives, including 25 dives deeper than 30 meters/100 feet

Course Content:

The curriculum covers the history of deep air diving, physics, physiology, decompression options, equipment considerations, dive planning, emergency procedures, and diving techniques. Skills include stress analysis, gas matching, buoyancy control, team communication, gas management, equipment handling, navigation, and emergency scenarios.

Course Benefits:

Graduates can engage in diving activities independently within specified limits, enroll in advanced courses like TDI Advanced Wreck, TDI Trimix, and TDI Advanced Trimix, and execute planned dives with sound judgment.

Minimum Requirements:

Successful completion of the TDI Extended Range Course written examination with a passing score of 80%, efficient completion of all open water requirements, and demonstration of mature judgment in dive planning and execution.

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