As a Tec 50 diver, you’ll have the knowledge and skills to make extended range dives to a maximum of 50 metres/165 feet. You’ll know how to make dives with multiple decompression stops using two decompression gases. It's not easy to reach this level. Earning your Tec 50 certification opens the door to deeper diving expeditions. There is also an option for divers to earn a Tec 50 Trimix Diver certification.

To enroll in the Tec 50 course, you must meet these qualifications:

  • PADI Tec 45 Diver
  • PADI Rescue Diver*
  • Minimum of 100 logged dives or 75 hours
  • 18 years old

* If meeting this with a qualifying certification, provide proof of CPR/First Aid training within the previous two years.  

You also need to have a Diver Medical Form signed by a physician within the last 12 months. 

Note that qualifying certifications from other diver training organizations may apply - ask your PADI Tec 50 Instructor.

Instructor with students at a table in a thatch hut.


The Tec 50 course consists of five knowledge development sections, four practical application sessions and four training dives. The primary focus of this course is learning advanced dive equipment options, techniques and procedures using two deco cylinders, and how to plan more complex dives. You also learn more how to handle emergencies, support diving considerations, and sharpen your thinking as a technical diver. Tec 50 Trimix students also learn about dive planning and diving with Trimix.

Available Languages

For information on other available languages please contact your PADI Dive Center.


You'll use full technical dive equipment and may use technical sidemount configuration, plus two decompression cylinders.


Tec 50 Trimix (option)

Curious about the benefits of using Trimix gas, like decreased gas density and reduced narcosis? Tec 50 divers can also learn to use trimix with not less than 21 percent oxygen and not more than 40 percent helium. This course prepares the diver to move into deeper, more complex trimix diving, such as the PADI Tec Trimix 65 and PADI Tec Trimix courses. Ask your dive instructor what additional requirements you may need to complete the Tec 50 Trimix option.

Getting Started

Visit your Dive Center or Resort to make sure you have the PADI Tec 50 Diver eLearning program, which you'll study independently before meeting with your PADI Tec 50 Instructor.

You may be able to get college credit for the PADI Tec 50 course.

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