Nitrox (EANx) Course

UPDATE: We have relocated to the Tampa area and are building a new shop! We will still have instructors in the Fayetteville area but the physical shop has moved. We have some limited classes scheduled in the Tampa area until the new shop opens. Please contact us for details.

Would you like to safely almost double your bottom times? Nitrox is just the course you need! Nitrox has a long history of safe use in diving and has been sucessfully used by recreational divers for the past 17 years. If you are going to dive the wrecks off the North Carolina coast or anywhere between 70 and 130 feet this course is essential.


This course provides the diver with the information necessary to utilize Nitrox as a breathing medium. We teach this class as a stand alone Nitrox Diver class or as part of our NAUI Scuba Diver or Advanced Scuba Diver class. Students receive a disount if they take the Nitrox class in conjunction with another class.

Qualifications Of Graduates

Upon successful completion of this course, graduates are considered competent to utilize Nitrox in open water diving activities without direct supervision, provided the diving activities and the areas dived approximate those of training.

Course Policies

Dives shall not exceed a depth of 130 fsw or 1.6 atm PO2 , whichever is less. No planned dives requiring actual decompression stops on the appropriate EANx tables are to be permitted. (Maximum PO2 of 1.4 is to be taught with 1.5-1.6 as contingencies.) We also teach this course as a NAUI Recognition Program if the open water training dives are not included. Recognition may be upgraded to Nitrox Diver certification upon completion (within six months) of the required dives under supervision of a NAUI Nitrox Instructor.

Skill Requirements

At least two dives are to be made using Nitrox, one of which is to be a repetitive dive. The student is to analyze his or her own breathing mixture and to plan and safely execute each dive.

Academic Requirements

The following topics are to be covered: history of nitrox as a breathing gas; Dalton’s law of partial pressures; physiology of oxygen and nitrogen; depth limits, advantages, disadvantages and risks of nitrox; oxygen toxicity; hazards and precautions of handling oxygen; the concept of Equivalent Air Depth; use of EANx with Standard Air Dive Tables; common gas mixing procedures; and gas analyzing procedures.

Prerequisites For Entering The Course

Age: Minimum is 15 years.
Certification: NAUI Scuba Diver certification or the equivalent is required unless combined with the Scuba Diver course.

How Much Does It Cost?

The NAUI EANx Diver Course costs $125 per student for a group class and private courses are available. We schedule students together for group classes whenever possible unless a private class is specifically requested. Military and Public Service discounts are also available.

What's Next?

Once you become an EANx diver, perhaps you want to further your training with an Advanced Scuba Diver or Rescue Scuba Diver course? Maybe you or someone you know was certified long ago and needs a refresher course. Perhaps you want to become a dive professional and go all the way to Divemaster or even become an Instructor! Whatever your scuba and skin diving needs, we can help you get there!