In 1997 NAUI created a Technical Department directed by Tim O'Leary. It's first mission was to organize technical diver training practices resulting in a higher standard of training worldwide. For expert advise, NAUI TEC asked the people who created the technical diving technology, protocols and training methods within the technical diving community. On the board of directors are the most famous names in today's diving.

When choosing a NAUI TEC course you are choosing one of the best technical diving agency in the diving industry. The courses are extremely demanding and usually require more training dives and academics than most other agencies offering similar programs.

OZD is proud to be the only center in Thailand to teach these programs and to actually have a Technical Workshop Director in residence. For those who wish to follow the professional path, we offer a full range of leadership and instructor courses.

This course is to provide the EANx certified diver with the skills and knowledge needed to minimize the risks of utilizing optimal breathing gas EANx mixtures* of 25% through 80% (oxygen) for dives to a depth of 150 fsw (46 msw) not requiring stage decompression. (This course may be combined with the Decompression Techniques Diver Course. The resulting course would require ten dives for certification.) *80% EANx used for decompression and 25% to 60% EANx used for bottom mix.

	4 Days		4 Dives
	Emphasis on learning utilization of optimal breathing gas EANx mixtures
	Does not require stage decompression
	More Info	525.00 USD	Online Booking

This course is to provide the diver with a working knowledge of the theory, methods and procedures of planned stage decompression diving. As a part of the course students will plan and conduct a standard stage decompression dive not exceeding a maximum depth of 180 fsw (55 msw). Equipment requirements and configurations, decompression breathing gas mixtures (including oxygen and EANx) and decompression techniques are to be presented. (This course may be combined with Technical EANx Diver, Technical Wreck Penetration Diver or Extended Range Diver. The resulting courses require an additional six open water dives for certification.)

	4 Days		6 Dives
	Emphasis on learning stage decompression techniques with EANx up to 80% oxygen
	Maximum training depth not to exceed 180 fsw (55msw)
	More Info	585.00 USD	Online Booking

This course is to provide the training and experience necessary to understand the hazards of and utilize air or EANx for dives to 180 fsw (55 msw) that require stage decompression, utilizing EANx mixtures and/or oxygen during decompression. (This course may be combined with the Decompression Techniques Diver Course. The resulting course would require twelve dives for certification.)

	6 Days		6 Dives
	Oxygen as a decompression gas
	Maximum training depth not to exceed 180 fsw (55msw)
	More Info	825.00 USD	Online Booking

This course is to provide the diver with the skills and knowledge needed to gain experience and minimize risks in penetration wreck diving at depths beyond 130 fsw (40 msw). (This course may be combined with the Decompression Techniques Course. The resulting course would require fourteen dives for certification.)

	6 Days		8 Dives
	Emphasis on learning proper line laying techniques and overhead environments
	Maximum training depth not to exceed 165 fsw (50msw)
	More Info	1190.00 USD	Online Booking

These courses are to provide the diver with the skills and knowledge needed to minimize the risks of utilizing helium-based tri-mix breathing gas mixes for dives to a maximum depth of 300 fsw (91 msw) requiring stage decompression and utilizing EANx mixtures and/or oxygen during decompression. There are two levels, called Tri-Mix Diver Level I and Tri-Mix Diver Level II.

	6 Days		6 dives
	The emphasis is put on the usage of helium-based gas mixes
	Level I is taught on normoxic mixtures allowing depths not to exceed 225 fsw (69 msw).
	More Info	1000.00 USD	Online Booking

These courses are to provide the diver with the skills and knowledge needed to minimize the risks of utilizing helium-based tri-mix breathing gas mixes for dives to a maximum depth of 300 fsw (91 msw) requiring stage decompression and utilizing EANx mixtures and/or oxygen during decompression. There are two levels, called Tri-Mix Diver Level I and Tri-Mix Diver Level II.

	6 Days		8 Dives
	The emphasis is put on the usage of hypoxic helium-based gas mixes
	Level II is thought on hypoxic mixtures allowing depths not to exceed 300 fsw (91 msw)
	More Info	1565.00 USD	Online Booking

This course is designed to provide the diver with the skills and knowledge needed to minimize the risks of using Semi-closed Circuit Rebreathers to a maximum depth of 130 fsw (39.6 msw). Semi-closed Circuit Rebreathers used for NAUI certification courses must have been independently tested before NAUI will authorize NAUI training on a specific model.

	3 Days		4 Dives
	Academics covering both semi-closed and closed circuit rebreathers and Nitrox review
	Academics covering the specific model.
	More Info	615.00 USD	Online Booking

This course is designed to provide the diver with the skills and knowledge needed to minimize the risks of using Closed-circuit UBA’s to a maximum depth of 130 fsw (39.6 msw). Closed-circuit UBA’s used for NAUI certification and training must have been independently tested before NAUI will authorize NAUI training on a specific model.

	4 Days		6 Dives
	No stage decompression required
	PO2 not to exceed 1.4 ata
	More Info	Call us	Online Booking

This course is to provide the student with the skills and knowledge needed to safely handle high pressure gases and prepare EANx breathing gas mixtures for use by divers.

	2 Days		No Diving
	Blending techniques
	Safe Oxygen handling
	More Info	450.00 USD	Online Booking