Technical Courses

PSAI & TDI

PSA - Mixed Gas Diver - Level 1 (Trimix Fundamentals 60m)
£460 - 5 Days

Course description:
The PSA Mixed Gas Diver Course is designed for those who wish to conduct dives using helium based bottom mixes with associated advanced staged decompression techniques. This program is conducted in three phases leading to dives of up to 100msw.

Minimum Entry level:
PSA Extended Range Diver or equivalent Diver course that included Advanced Decompression Procedures, with 100 logged dives with 50 deeper than 30m.

Trimix Open Water Dives:
1. The PSAI Trimix Diver Course consists of 3 phases.
2. A minimum of (4) helium based dives (with oxygen content of 18% or great) are required for Level 1 - Trimix Fundamentals certification to 60m. With a student to instructor ratio of 3:1
3. An additional (2) dives are required for Level 2 - Expedition Trimix certification to 73m. With a student to instructor ratio of 3:1
4. Finally, a third set of (2) dives are required for Level 3 - Explorer Trimix certification to 100m. With a student to instructor ratio of 3:1
5. To achieve certification, one dive in each phase MUST be within 3m of the desired certification level. (However, no dives are to exceed the planned target depth).

TDI - Trimix Diver (60m) £460 - 5 Days

Course description:
As your motivation to explore progresses you will find that you may want to go deeper to dive that wreck that is part of history or that cave system that you have read so much about. One of the major limiting factors of going deeper is narcosis; TDI’s Trimix Diver course shows how to minimize the effects of narcosis by adding helium to offset the nitrogen in your breathing gas. While taking the Trimix Diver course your TDI Instructor will teach you how to plan and execute dives utilizing as little as 18 percent oxygen and diving to maximum depth of 60msw with a blend of helium appropriate for the planned depth. The course covers topics and skills like

Dive team planning
Gas matching
Cylinder labeling
Surface marker deployment
Equipment configuration
Thermal protection options

Open water Dives
1. Four (4) Decompression Dives with a minimum accumulated bottom time of on hundred (100) minutes.

2. At least Two (2) dives should be deeper than forty (40) msw.

Two (2) dives may be creditied from the TDI Extended Range Course (or equivalent) at the discretion of the Instructor

Student to Instructor
Ratio 4:1, if conditions allow

Minimum Entry level:
TDI or PSA Extended Range Diver or equivalent Diver course that included Advanced Decompression Procedures, with 100 logged dives with 50 deeper than 30m.

TDI - Advanced Trimix Diver (100m) £460 - 5 Days
The TDI Advanced Trimix Diver course is the top level of training for open circuit divers wishing to dive to depths as deep as 100 m / 330 feet utilizing hypoxic levels of oxygen (below 17 percent). This course is perhaps one of the most informative and challenging and upon completion you are among some of the most elite divers. Your TDI Instructor will teach you

Equipment management
Multiple stage cylinder labeling and placement
Complex decompression planning and contingency planning
Dive team awareness and communication
Gas monitoring and management
Use of travel gasses

Open Water Dives
1. Four (4) Decompression Dives with a minimum accumulated bottom time of on hundred (100) minutes.

2. At least Two (2) dives deeper should be deeper than fifty five (55) msw.

Student to Instructor
Ratio 4:1, if conditions allow

Minimum Entry level:
TDI Trimix Diver or PSA Expedition Trimix Diver