TDI Advanced Nitrox / PADI Tec 40 course is your introduction to the world of Tec diving. In this course you will dive to a depth of 130ft / 40m with a deco mix of up to 100% Oxygen with TDI and 50% Nitrox with Padi. You will be learning new procedures and checklists which are used before and during the dive to ensure the diver remains safe when switching gases. Before starting the course you can choose to take the TDI or PADI course.

Whether you choose to complete your training in a sidemount configuration or in the traditional backmount configuration, we can fit you accordingly with an XDeep stealth 2.0 sidemount harness or an OMS backplate and wing.

This course is 4 dives and is covered in 3/4 days of training. To get the most out of your technical training this course can be, and is often combined with Decompression Procedures / Tec 45. 

Before you start you may choose TDI or PADI for certification.

All  technical courses require a Medical Statement signed by a physician within the last 12 months & require the student to have DAN insurance or equivalent.

TDI Adv. Nitrox Prereqs:

  • 18 years old. 15 with parental consent
  • Nitrox Diver
  • 25 logged dives

PADI Tec 40 Prereqs:

  • 18 years old
  • Advanced Open Water
  • Nitrox Diver 
  • Deep Diver or proof of __ amount of dives deeper than__
  • 30 logged dives
This is a picture of the price list that coconut tree divers and roatan tec center have used for filling nitrox and helium tanks.

Related Courses

Deep Specialty


Deco Procedures / Tec45