Technical Course Descriptions

TDI Technical Courses

TDI was formed in 1994 by some of diving’s most experienced instructors to bring technical applications of the sport to a wider audience. TDI’s library of training materials and texts have become known as the industry’s best and most professional resources. Most importantly, TDI has the best safety record of all training agencies.

Whether your interests lie in nitrox, decompression procedures, extended range or any of the many other programs that TDI offers you can be assured that you will be participating in training that offers you the "cutting edge" of diving technology.

We have offices worldwide and over 10,000 instructors teaching our programs. TDI has become the largest international specialized dive agency. Diving is constantly changing. Our staff is always looking ahead and is striving to continue our record as the innovators of the industry.
We want to make the experience of diving one that is enjoyed by every family member to the fullest. At TDI we are all divers and want to share our love of the sport with as wide an audience as possible.


Advanced Nitrox

This course examines the use of EAN 21 through 100% (oxygen) for optimal mixes to a depth of 130fsw/40msw. The object of this course is to train divers in the benefits, hazards and proper procedures for utilizing EAN 21 through 100% (oxygen) for dives not requiring staged decompression. (Decompression techniques may be combined with this course at the discretion of the instructor).


Decompression Procedures

This course examines the theory, methods and procedures of planned stage decompression diving. The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maxium depth of 150fsw/45msw. The most common equipment requirments, gear set-ups, decompression techniques and decompression mixtures (including oxygen and nitrox) are presented.


Extended Range

This course provides the training and experience required to competently utilize air for dives up to 180 fsw/55msw that require staged decompression, utilizing nitrox mixtures and oxygen during decompression.

PSAI Technical Courses

The Professional Scuba Association International is one of the oldest scuba instructional training agencies in the world. For many years it was a small, specialized organization that was predominantly involved with dive training associated with extended range, deep air diving. PSA was in place as the mainstream technical agencies burst onto the market in the mid-1980s and continued their program of careful selection of instructors and adherence to safe diving techniques. Many of the agencies recognized PSAI programs for the quality and afforded direct cross-over certification.

PSA has its World Headquarters located in Ocala, Florida and is expanding its offerings to a variety of international offices. Long established in places such as: America, Italy, The United Kingdom and The Czech Republic, PSAI continues to grow as both instructors and divers enjoy the quality of education afforded by the carefully reviewed standards and procedures.During organizational meetings in early 2005, the PSA course structure was reconfigured into course offerings. It was set up to include logical paths of their normal extended range programs, a traditional path of technical deep diving from nitrox to trimix. Every PSAI diver will receive the highest quality training from the highest quality instructors.

PSAI training and certification is PERFORMANCED BASED!

PSAI is not ‘One in a Million’, PSAI is ‘ONE OF A KIND’.



PSAI Advanced Priciples of Diving with Nitrox

This course is designed for those divers who wish to utilize enriched air (Nitrox) at oxygen concentrations up to and including 100% oxygen by volume.It provides the necessary information for a PSAI diver to know theproper procedures to

‣Determine appropriate Nitrox gas for planned dives;
‣Determine appropriate diving equipment for planned Nitrox dives;
‣Plan dives based on established limits and cautions for Nitrox gases;


PSAI Advanced Nitrox Decompression Procedures (45m)

This course is designed for aspiring technical divers who wish to utilize enriched air Nitrox at oxygen concentrations up to and including 100% by volume in their diving activities to include stage decompression procedures to a maximum depth of 45m (150ft). The course stresses self-sufficiency and safety.


PSAI Extended Range (55m)

This course is designed for those divers who wish to conduct dives beyond 45 meters (150 feet) but not exceeding 55 meters (180 feet) using staged decompression techniques for both depth and extended bottom times. This course uses air as the primary back gas and Nitrox and Oxygen as decompression gas(es).


My programs are "Performance Based". You will pay for your training, but you will earn your certification.