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PADI Tec 40

The PADI Tec 40 Diver 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.

You can consider enrolling in the PADI Tec 40 course if you're interested in technical diving but haven't yet met the prerequisites for the PADI Tec 45 or PADI Tec 50 diver course. Because you can do one of these dives in confined water such as a swimming pool, many divers start the Tec 40 courses in the winter months, ready to continue in open water when spring arrives.

The Course

The Tec 40 course consists of three knowledge development sections, three practical application sessions, and four training dives. You'll learn about:

  • Technical diving risks and responsibilities
  • Technical diving equipment, proper rigging and set up
  • Gas planning, oxygen limits and decompression planning
  • Team diving techniques and emergency procedures, such as dealing with free flows, manifold leaks and out of gas situations

You will also learn to use decompression software and dive computers to plan and make decompression dives with no more than 10 minutes of total decompression and not deeper than 40 metres.

Use a single cylinder of decompression gas with up to 50 percent oxygen (EANx50) to add conservatism to the required decompression.

Since it's part of the course, your PADI Tec 40 course training credits toward the PADI Tec 45 and Tec 50 courses.

The Learning Materials

PADI eLearning makes it easy to fit scuba lessons into a busy schedule. Learn about scuba diving principles and terminology whenever, wherever it's convenient for you. It's your course on your time. Study offline, or online using a computer or mobile device. Connect with your instructor whenever you have a question.

eLearning time commitment: 4-5 Hours

The Scuba Gear You Use

The fit and comfort of your personal equipment are key to having an enjoyable diving experience. As a minimum, You will need yor own mask, snorkel, fins and exposure suit. Your PADI Tec Instructor will have the technical diving equipment, including but not limited to - two tanks, primary and backup regulators, and technical diving BCD and harness or sidemount harness.

Our friendly staff will help you select gear that’s right for you when you’re ready to get your own equipment. 


You must be certified as a PADI Open Water Diver or have a qualifying certification from another training organisation. be at least 18 years old and logged 10 dives.

Medical Requirements

Scuba diving requires a minimum level of health and fitness. Chronic health conditions, certain medications and/or recent surgery may require you to get written approval from a physician before diving.

Avoid disappointment, download and review the Diver Medical form to ensure you won’t need a physician’s approval to dive before enrolling in a scuba course. Instructors, divemasters and dive shop staff are not physicians and should not be asked for medical advice; only medical professionals can give medical clearance to dive.

If you (or your physician) have questions about medical fitness to dive, contact the experts at Divers Alert Network (DAN).

Your Next Adventure

Once you completed PADI Discover Tec Diving, you'll want to check out: Tec 40 certification courses.

Getting Started

This is one of our specialist course and we run them as custom courses to enrol please book the holding course below making your purchase online through our website.

You will then receive an email asking for some more details to get you registered and also offering some help to get you started with your online materials. We will contact you to arrange more details on logistics of your course, such where to be and when.

If you are unsure simply contact us to discuss this further.

Additional Costs

Dive site entry from £15- £25 per day

Your PADI Tec Course includes 3 days of technical training, materials. However, as with all training courses, this certification can only be award following the demostraton of skill mastery. Most students will complete the course within the 3 days, however additional training beyond this will be charged on a per-day basis.

  Course Type   Price    
Tec 40 £ 450.00