Candidate Pre-Requisites:

• Be a minimum age of eighteen (18).
• Have a minimum certification as a TDI Advanced Nitrox Diver and Decompression Procedures Diver (or equivalent).
• Show proof of a minimum of one hundred (100) logged dives.

Equipment Requirements:

• O2 clean Twin Set for Bottom Mix
• O2 clean Stage Cylinder(s) for decompression
• Separate Suit Inflation Cylinder (Argon cylinder)
• Primary and primary redundant required on all bottom mix cylinder(s).
• Submersible pressure gauges are required on all primary / bottom mix cylinders.
• A contingency use long hose second stage should be designated and appropriately rigged to facilitate air sharing at depth if necessary.
• It is strongly recommended that three (3) required regulators be all DIN or all yoke.
• Buoyancy Compensator(s) adequate for equipment configuration.
• Redundant Depth and Timing Devices.
• Air decompression computers allowed for use as depth and timing devices.
• Primary and Redundant Light System.
• Ascent Reel (100m line) with Lift Bag/Surface Marker Buoy
• Back-up Reel and SMB
• Exposure suit adequate for the open water environment - Dry Suit
• Line Cutting Device.
• Underwater Slate or Note Pad

Underwater Explorers is able to provide some of the required equipment for the duration of course free of charge (subject to availability).

Graduation Requirements:

• Demonstrate familiarity with basic and intermediate hand signals.

• Select and prepare of equipment suitable for soft overhead environment with long decompression obligations.

• Conduct team oriented drills for SMB deployment and gas switching procedure.

• Drills for buddy rescue

• Demonstrate buoyancy control (ability to hover at fixed position in water column without moving hands or feet).

• Show good awareness of buddy and other team members through communications, proximity and team oriented dive practices.

• Demonstrate competence managing two stage cylinders including drop and recovery while maintaining position in the water column.

• Demonstrate ability to confirm gas switches at depth with team members.

• Demonstrate SMB deployment from depth and use of SMB as back-up buoyancy device.

• Demonstrate air-sharing ascent from depth while one member of buddy team is without mask.

• Create contingency decompression schedule after simulated loss of decompression gas.

• Demonstrate ability to manage multiple failures simultaneously.

• Demonstrate controlled ascent with simulated toxed diver including surface tow at least 30 meters with gear removal on surface.

• Complete a horizontal breath hold swim at depth for 15 meters with mask off or blacked out.

• Satisfactorily complete the TDI Trimix Course written examination.

• Complete all open water requirements safely and efficiently.

• Demonstrate mature, sound judgment concerning dive planning and execution.