PADI Tec 50
Execute extended range decompression dives, manage multiple gases, and operate as a fully independent technical diver
Duration
3 days, 4 dives
Max Depth
50m / 165ft
Level
Technical (Advanced / Full Decompression)
Next Step
PADI Tec Trimix 65
Overview
The PADI Tec 50 course completes the core TecRec progression, training divers to plan and execute extended range decompression dives using multiple gases and full technical procedures.
Divers operate with two decompression gases, managing complex ascent profiles, accelerated decompression, and increased task loading.
Training may be conducted using air or enriched air nitrox, with an optional Tec 50 Trimix configuration introducing helium to reduce narcosis and improve performance at depth.
At N9BO℠, this is where divers become fully operational — capable of planning and executing technical dives independently with precision, control, and discipline.
This course can be conducted with a Trimix option, introducing helium-based gas planning as part of your technical progression. Upon completion, you will earn the PADI Tec 50 Trimix Diver certification.
Course Facts
- Course name: PADI Tec 50 Diver
- Level: Advanced technical decompression course
- Minimum prerequisites: Minimum age 18, PADI Tec 45 Diver (or equivalent), Rescue Diver, minimum 100 logged dives
- Ratio: Maximum 4 students per instructor (small groups recommended for quality training)
- Configuration: Full technical configuration (backmount doubles or sidemount) with two stage/decompression cylinders
- Gas options: Air / Nitrox / Trimix option available
- Depth / environment: Maximum 50m / 165ft with staged decompression and multigas ascent profiles
- Format: Academic development + practical applications + open water decompression dives
- Duration: Typically completed in 3 days (4 dives)
What You’ll Learn
- Plan and execute decompression dives to 50 metres.
- Use two decompression gases, including high-oxygen mixes up to 100%.
- Manage complex ascent profiles and accelerated decompression.
- Perform multiple gas switches under increased task loading.
- Operate independently within a structured technical team.
Prerequisites
- Be at least 18 years old.
- Hold PADI Tec 45 Diver certification (or equivalent).
- Hold Rescue Diver certification (or equivalent).
- Provide proof of at least 100 logged dives.
- Be medically fit for diving.
FAQ
This course is for divers who have completed Tec 45 and want to operate as fully independent technical divers, capable of managing complex decompression dives.
Tec 50 introduces the use of two decompression gases, enabling longer and more efficient decompression while increasing planning complexity and task loading.
Yes. Tec 50 may be conducted using trimix (helium-based gas) as part of the Tec 50 Trimix option. This reduces narcosis and improves diver performance at depth while maintaining the same maximum depth.
You will complete four decompression dives, progressively increasing depth and complexity while managing multiple gases, executing gas switches, and maintaining strict procedural control.
You will be qualified to conduct extended range decompression dives to 50 metres using multiple gases, and progress into Tec Trimix training.
Ready to Extend Your Range?
Send us your certifications and dive history. We’ll guide you into advanced technical diving with the structure, discipline, and precision required for independent execution.
Go Pro with PADI Tec 50 Instructor
Advance to the highest level of TecRec instruction with the PADI Tec 50 Instructor rating. This qualification allows you to teach Tec Basics, Tec 40, Tec 45, and Tec 50, training divers through the full technical pathway and preparing them for deep and mixed gas diving.
