The gas turn point has come, the no decompression limit is getting close, there is so much more to see but times up and you need to make your way up to a safety stop… 

There is a way to extend those time limits beyond recreational scuba limits, and TEC 40 is the first step on that path. For experienced divers who have grown competent in recreational scuba, TEC 40 may be the next logical step to extend their bottom times, edge that bit deeper and visit places few divers ever get to see.

The PADI TEC 40 course is where you transition from recreational scuba diving to technical diving. It’s a great place to start because it’s the first subdivision of the full PADI TEC Diver course and bridges the gap between no stop diving and full technical deep decompression diving. You gain experience and begin building the knowledge and skills you need to continue your TEC diver training. You will qualify to make limited decompression dives to 40 metres using enriched air up to 50% oxygen to increase the conservatism of your decompression

Please note, this course can be completed in either Sidemount or back mount doubles, if you have no experience in either then we will require you to complete the relevant training in your chosen configuration before starting this course.

The Training

The PADI TEC 40 course includes three parts: 

  • Knowledge Development – Once you have signed up for the course we will provide you with a digital CD manual to read and complete the relevant knowledge reviews before your practical training. This is not for the faint hearted as is a lot more in depth than the recreational courses. Your instructor will then review this and go into further detail in the classroom covering topics such as:
    • Decompression theory and planning
    • Gas and dive planning
    • Stage preparation and labelling
    • Emergency procedures
    • Thinking and acting like a TEC diver
  • Confined Water Training – After all the gear set up, it’s time to get wet! Starting in a calm shallow water environment, your instructor will spend time going through emergency shutdown drills, simulated decompression plans and equipment configuration.
  • Open Water Dives – Over the course of 2 days you will then complete 3 additional dives in a 3 tank configuration repeating the skills from confined water to make them fluid whilst progressing to more complex decompression plans. Your qualifying dive will be completed at the Zenobia wreck up to a maximum of 40 metres. You will also cover the following skills and drills within your training:
    • Gas emergency drills
    • Staging techniques
    • Decompression runs and simulated omitted decompression procedures
    • Bailout and shutdown drills


    • Age: 18 years old and above
    • PADI Advanced Open Water Diver and above, or equivalent, from an alternative agency
    • PADI Enriched Air and Deep certified or equivalent from an alternative agency
    • Minimum of 30 logged dives (a minimum of 10 using nitrox and a minimum of 10 to 30 metres or deeper)
    • Good physical health and have a medical statement signed by a physician within the last 12 months – If you have any medical conditions you think may prevent you from technical scuba diving please feel free to contact us



(please get in contact for a price to integrate with another TEC course)


  • Manual (digital CD) + certification
  • Confined water training
  • 3 Open water dives
  • Transport to and from dive sites
  • Gases + cylinders
  • 20% off on APEKs sidemount wings, twinset wings, harnesses, backplates and regulator sets
  • Lifetime membership of the Wreckheads Club

Time commitment 

3 days

Combo Deal!

  • Complete the full TEC Deep Course (40-45-50) as one package for only €995 and save €190! (includes all PADI materials, certification, equipment rental and transport