Tec 50
Push past Tec 45 into elite-level trimix and deep decompression diving
2 days
PADI Certified
Course booking
From
£590.00
Need help choosing? Our team can match the course to your experience, goals and confidence level.
PADI 5-Star
Instructor Development Centre
Small Groups
Real Instructor Attention
Unit 4, Bellman Court, Great Knollys Street, Reading, RG1 7HD
Diving Academy
Safety First
Confidence Before Speed
Course overview
What to expect
Tec 50
Tec 50 is where technical diving stops being challenging and starts being genuinely elite. Sold as a combined Tec 50 and Tec 50 Trimix Diver course, it takes you beyond Tec 45 into deeper decompression diving using trimix to manage the physiological load of real depth. Given the seriousness of what you're training for, our instructors take genuine care ensuring every diver who steps up is truly ready for it.
In detail
About This Course
Tec 50 is where technical diving moves into genuinely elite territory. Sold with us as a combined Tec 50 and Tec 50 Trimix Diver course, it takes divers beyond the limits set by Tec 45 and into deeper, more demanding decompression diving, using trimix to manage the physiological challenges that come with greater depth.
Across the two-day course you will sharpen advanced decompression procedures, refine dive planning to a genuinely elite standard, and put it all into practice on deep trimix dives that push meaningfully past what Tec 45 divers are trained for. The emphasis throughout is on precision: gas management, contingency planning, and the calm, methodical mindset that technical diving at this level demands.
Because of what is being asked of you underwater, the prerequisites are correspondingly serious. You will need to already hold PADI Tec 45 Diver certification, along with PADI Rescue Diver or an equivalent qualification and proof of CPR and First Aid training completed within the last two years. A minimum of one hundred logged dives or seventy-five hours underwater is required, you must be at least eighteen years old, and you will need a Diver Medical Form signed by a physician within the previous twelve months.
Training runs from our Reading base, with divers travelling in from across the region to take it on.
The process
How The Course Works

Step 1
Knowledge Development
You push further into decompression theory, now planning around two separate decompression gases and multiple staged stops. This is the level where technical diving stops being a variation on recreational diving and becomes its own discipline entirely.

Step 2
Practical Application
You rehearse managing multiple cylinders, gas switches and contingency procedures until juggling them under pressure feels manageable rather than overwhelming. At this depth, a calm, well-drilled routine is what keeps a dive on plan.

Step 3
Training Dives
You then take it to open water, executing extended range dives with your instructor and putting your multi-gas decompression planning into practice for real. It is a genuinely elite qualification, and one you earn dive by dive.
PADI states: extended range dives to a maximum of 50 metres/165 feet with multiple decompression stops using two decompression gases; prerequisites include Tec 45 Diver and Rescue Diver certification plus a minimum of 100 logged dives or 75 hours
Course curriculum
What You'll Learn
Learning Outcomes
- 2 Days Training
- PADI E-Learning
- Optional Trimix Upgrade (£150) includes additional trimix training and 2 trimix training dives
- Equipment hire add-on at £150/day
Getting ready
Before You Start & What's Next
Prerequisites
- PADI Tec 45 Diver
- PADI Rescue Diver or qualifying certification with proof of CPR/First Aid within two years
- minimum 100 logged dives or 75 hours
- 18 years old
- Diver Medical Form signed by a physician within the last 12 months
Next Steps
Upcoming training
Dates & Booking
No fixed dates listed right now
Choose your preferred start date and the academy will confirm instructor availability with you directly.
Speak to the team
Not sure where to start?
We will help you pick the right course, package and dates without making the process feel complicated.
Quick facts
Duration
2 days of structured training
Location
Unit 4, Bellman Court, Great Knollys Street, Reading, RG1 7HD
Certification
Recognised PADI qualification on completion
Have questions?
We're here to help
Our course directors can talk you through Tec 50, confirm it's the right fit for your experience, and help you find a date that works.
From
£590.00
