Advanced EANx Diver

This Program is designed to extend the diver’s knowledge in the use of EANx for Sport diving. It further develops diving skills and provides a greater understanding of the EANx concept of diving.
The Program employs EANx mixes from 21% to a maximum of 50% oxygen.

Must be qualified as an IANTD EANx Diver and IANTD Deep Diver with proof of a minimum of 15 logged dives; or provide proof of experience as a Deep Diver with a minimum of 50 logged dives of which at least 10 dives were between 90 fsw (27 msw) and 130 fsw (39 msw), plus completion of pool / shallow OW skills in the IANTD Deep Diver Program, and completion of the IANTD Deep Diver written exam with a minimum score of 80%.
Must be a minimum of 15 years of age with a parent or guardian authorization, or a minimum of 18 years of age without guardian approval.

IANTD Advanced EANx Student Manual and Workbook, or equivalent text(s) approved in writing by the Board of Directors (written approval will be issued by IAND, Inc./IANTD World Headquarters).

Program Content All Lecture and theory material must be completed.
This Program must include a minimum of 120 minutes of OW bottom time completed within 4 dives, 2 of which must be to depths between 100 fsw (30 msw) and 130 fsw (39 msw). If combined with a Deep Diver Program, the total dive time for both Programs must include a minimum of 160 minutes completed within 6 or more dives. Even if the time and skill requirements are met within fewer than 6 dives, the minimum 6 dives must be made. If combined with a Deep Diver Program 4 dives must be made to depths between 100 fsw (30 msw) and 130 fsw (39 msw).
Students are taught the use of EANx mixtures from 21% to a maximum of 40% oxygen for diving. EANx mixtures in the range of 41% to a maximum of 50% oxygen are used to teach the fundamentals of safety and decompression stops.

A safety or decompression gas cylinder (if used), rigged as either a pony or stage cylinder. Gas cylinders must be oxygen clean and oxygen serviceable where needed.

There may be no more than 4 students per Instructor. This ratio may be increased by 2 students for each assisting IANTD Divemaster, up to a maximum of 8 students with 2 IANTD Divemasters per class session.
No dives may be conducted to depths greater than 130 fsw (39 msw).
All dives must be conducted using EANx (maximum 40% oxygen). A higher EANx (maximum 50% oxygen) may be used at the decompression or safety stops.
All appropriate safety or required decompression stops must be performed.
Decompression stops are limited to a maximum of 10 minutes and 20 feet (6 meters).

A confined water session must be completed before conducting any OW dives.
Demonstrate proficiency in a variety of dive techniques and employ precision buoyancy control.
1. Swim in a simulated out-of-air situation (without breathing, and exhaling slowly) without a mask for a distance of at least 45 feet (15 meters), and commence gas sharing; or appropriate rebreather gas management drill for out-of air diver. While gas sharing, swim for 3 minutes, then replace and clear mask.
On an OW dive, demonstrate dive planning abilities, especially for avoiding CNS exposure risk.
Perform a gas sharing ascent using the alternate second stage.
Perform valve shutdowns on each dive.
Deploy lift bag 2 times, using it as an ascent platform.
Demonstrate a safe attitude and awareness to the Instructor’s satisfaction.
Remove and replace tank and BCD at a depth greater than 20 fsw (6 msw).
Remove and replace tank and BCD at surface.
Demonstrate acceptable navigation / orientation abilities.
In an area where a depth is attainable beyond the planned depth, evaluate that the student has the discipline not to exceed the dive plan.
Demonstrate accident management / control techniques as described in text.
If entering the Program based on previous experience, complete the IANTD Deep Diver waterskills.

This page was last updated 02/17/07