IANTD - Advanced Recreational Trimix
The IANTD Advanced recreational Trimix course is designed to extend the diver’s knowledge in the use of Trimix for Sport diving. It further develops the diving skills and provides a greater understanding of the EANx concept of diving. It is also intended to supplement the skills of the Recreational Trimix Diver. The programme employs EANx mixes from 21% oxygen to a maximum of 1.5 Po2 combined with a Helium content that maintains an END no greater than 24msw. Upon certification divers are qualified to dive to a depth of 45msw and perform mandatory decompression stops of upto 15 minutes on 100% 02.
The following skills are taught
1. Demonstrate proficiency in a variety of dive techniques and employ precision buoyancy control
2. Swim in a simulated out-of air situation (without breathing and exhaling slowly) without a mask for a distance of at least 15 metres and commence gas sharing
3. On an Open Water dive, demonstrate dive planning abilities, especially with regard to avoiding CNS exposure risk
4. On at least two dives use Recreational Trimix with a minimum of 28% oxygen and a maximum of 40% oxygen and adequate Helium to provide an END no greater than 24 msw
5. On all dives using Helium do a safety stop at 9, 6 and 4.5msw for a minimum of 1 minute each followed by if needed and planned, decompression stops at 6 and 4.5 msw for no more than 15 minutes maximum based upon 1.5 PO2 oxygen as a decompression gas
6. Perform a gas sharing ascent using the alternate second stage
7.Perform gas switches to a decompression gas mixture no greater than 1.5 PO2 on at least two dives
8. Perform Valve shutdowns on each dive
9. Depoly DSMB at least two times and use as an ascent reference
10. Demonstrate a safe attitude and awareness to the instructor’s satisfaction
11. Remove and replace tank and BCD at surface
12. Demonstrate acceptable navigation/orientation abilities
13. In an area where a depth is attainable beyond the planned depth, ensure that the diver has the discipline not to exceed the dive plan
14. Demonstrate accident management/control techniques
If entering the course based upon previous experience complete the IANTD Deep Diver water skills
Course Requirements:
1. Must be qualified as an IANTD Recreational Trimix Diver or Nitrox Diver and IANTD Deep Diver
2. Proof of a minimum of 30 logged dives or sufficient experience to satisfy the instructor that the student has the ability and knowledge to continue into this level of training
3. 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
Equipment Requirements
- Drysuit- crushed neoprene or membrane preferred
- Twins Set-with isolation manifold and in 02 service
- 2 primary regulators - one with a 2m long hose attached
- 02 clean stage cylinder (minimum 5.7ltr) fitted with 02 clean regulator
- Dive computer- must be capable of working in gauge mode or be Trimix capable
- Back up depth, time and decompression information
- Decompression tables
- Primary Light- umbilical preferred
- Backup light
- Fins, mask, gloves
- Compass
- Slate and pencil
- Surface alert device
- 2 cutting devices
- 1 x Orange DSMB and 1 x Yellow DSMB
- reel and backup spool/reel