IANTD Deep Diver

IANTD Deep Diver Course


This Program is designed to provide responsible training to divers who plan to dive to a maximum of 39 msw on air.
The IANTD Deep Diver Program trains divers in skills, performance, theory and planning of deep dives. This Program remains within the commonly practiced depth of 39 msw, and is the first sanctioned international Program to provide proper training in safe deep diving skills and performance.
It is recommended that this Program be taught in conjunction with the IANTD EANx Diver Program or the Recreational Trimix Diver Program or the IANTD Advanced EANx Diver Program.
This program qualifies divers to dive to 39 msw.


Must be qualified as an IANTD Advanced Open Water Diver or equivalent.
Must provide proof of a minimum of 10 logged dives.
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.

Program Content

All lectures completed with IANTD Course-specific Slides pertaining to the theory in the IANTD Deep Diver Student Kit.
This Program must include a minimum of 100 minutes of OW bottom time completed within 4 dives, 2 of which must be to depths between 30 msw and 39 msw.

Equipment Requirements

IANTD Deep Diver Student Kit.
Same as Equipment requirements listed in the general Sport Diver Programs overview.

Program Limits

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 39 msw.
Appropriate safety decompression stops must be performed.

Water Skills Development

A confined water session must be completed before conducting any OW dives.
Swim in full underwater equipment for 5 minutes.
Calculate RMV from gas consumed during a 10-minute swim (based on change in cylinder pressure).
Become proficient in the following propulsion techniques: modified flutter, modified frog, modified dolphin and standard shuffle kicks.
Demonstrate buoyancy control by:
a. A timed ascent at a rate of 6 meters per minute.
b. Hover at constant depth for 3 minutes.
c. Swim 23 meters in full equipment without mask.
d. Deploy a lift bag in less than 2 minutes.
e. Air sharing skills or appropriate Rebreather gas management drill for out-of-air diver
If a Rebreather is used by the student, the appropriate Rebreather drills must be incorporated.
a. Swim in a simulated out-of-air situation (without breathing, and exhaling slowly) for a distance of at least 14 meters, and commence gas sharing. While gas sharing, continue to swim for at least 4 minutes while maintaining a normal swim rate; or appropriate Rebreather gas management drill for out-of air diver.
b. Repeat the above step with the gas-recipient diver wearing a fully-flooded mask (or no mask at all), and swim 2 minutes while sharing gas; or appropriate Rebreather gas management drill for out-of air diver.

NOTE: All gas sharing drills are via the alternate second stage and not manual air sharing from the same second stage.

Perform valve shutdowns: change regulators and shut the primary-regulator valve off, then reopen valve and repeat as if the secondary (backup) regulator had malfunctioned. Repeat until skill (both valve openings shutdowns) is completed in less than 2 minutes.
Close and open tank valves on all dives.
Deploy lift bag on at least 2 occasions.
Remove and replace tank and BCD at surface on at least one dive.
All ascents are to be at a rate of 9 meters per minute or slower.

Recommended watermanship evaluation, to be completed during course (80% = passing (80 / 100 Points)).

This evaluation may be accomplished in one session or during a sequence of training dives.

Skill One

Two buddies with blacked-out masks (or closed eyes) face each other at a distance of 15 meters apart, and follow a line or other reference towards each other, without breathing. Upon contact, they commence gas sharing (alternate second stages or pony cylinder hand-off) and maintain contact with each other while swimming for a distance of 275 meters.

Skill Two

Ascend from a depth of at least 18 msw at a rate of 9 meters per minute, plus a 10-minute safety stop at a depth of 4.5 msw, with depth variation no greater than 1 msw for the duration of the stop. The ascent is to be controlled via the BCD, not by pulling up a line. Score 25 points if performed correctly. Subtract one point for each one 0.3 meter per minute variation in ascent rate during the overall average ascent to 4.5 meters, and subtract 1 point each time the student changes depth by more than 1 msw during the 10-minute safety stop.

Skill Three

Deploy a lift bag from a depth of 6 msw, and at least 9 msw above the bottom. The diver must complete the deployment and maintain depth within a maximum of 3 meter variation (i.e., the diver cannot ascend to a depth shallower than 3 msw or descend to a depth greater than 9 msw) during deployment of the bag. Score 25 points if the skill is completed successfully, and subtract 5 points for each depth variation greater than 3 msw.

Skill Four

Use of malfunctioning equipment:

  1. Use a free-flowing regulator for 3 minutes.
  2. Maintain buoyancy control via oral inflation of the BCD for five minutes.

During this time, swim for a distance of at least 50 feet (15 meters) at one depth, then ascend by 1 msw and repeat, then descend by 1 msw and repeat. This should be followed by a controlled ascent and controlled descent at a rate of no more than 3 msw per minute, while swimming in an area with a variation in depth. Score 25 points if all skills are completed successfully, and subtract 4 points for each violation of procedure on any of the skills, or if any skill needs to be repeated.