TDI Hollis Prism2 Air Dil Deco Diver Cource

Rental fees (if rental units are required)

Bailout cylinder and regulator fees

CO2 absorbent (Sofnolime), O2, and diluent cylinder fees

E-learning: 22,000 JPY

Diver registration fee: 18,000 JPY

Additional training is available at a rate of 48,500 JPY per day, if required.

Boat fee: 10,000 JPY per day

The TDI Hollis Prism2 Air Diluent Deco Diver course provides training for decompression diving to a maximum depth of 40 meters using air as the diluent.

The curriculum covers the handling of emergency bailout cylinders and open-circuit (OC) decompression skills for use in the event of a CCR malfunction.

This course offers a rewarding challenge for divers. Subsequent technical diving courses available include the TDI CCR Heliox Deco (45m) Diver course, as well as CCR Cavern, CCR Intro to Cave, CCR Full Cave, and TEC DPV courses.

We also offer technical fun dives, so please feel free to contact us for more information.

■ Classroom Instruction

*May be conducted prior to shallow-water skill practice

・Lecture (approx. half-day)

・History of rebreathers

・Types of rebreathers

・Prism2 mechanics

・Oxygen sensors and CO2 scrubber canisters

・Handset operation and controls

・Counter-lungs and buoyancy control

・Hypoxia, hyperoxia, hypercapnia

・Loop leaks

・Maintenance, etc.

・Final exam

■ Shallow-water or Pool Skill Practice (Confined Water Dives)

・Basic skills using the Prism2

・Unit preparation and dive procedures

・Trim and buoyancy adjustment

・Minimum loop volume

・Handset operation and controls

・OC (Open Circuit) bailout procedures

・Emergency procedures (hypoxia, hyperoxia, hypercapnia, loop flooding, etc.)

■ Open Water Training (Training Dives)

・Total of 6–8 or more dives (including confined water sessions)

・Trim and buoyancy adjustment

・Buddy checks

・Handset operation and controls

・Emergency procedures

・OC bailout procedures

・SMB deployment, etc.

TAKE DIVE is an authorized Hollis dealer. We handle unit sales and post-purchase maintenance domestically.

All training dives can be conducted via boat at dive sites around Onna Village upon request.

A separate boat fee of ¥10,000 per day applies in this case. (Reservations are required for boat dives due to capacity limits.)