CCR Rebreather Diving MOD 2 (Mixed Gas)

For bookings and more info, email our team:
training@ecdivers.com

$2000

CCR MOD 1 Helitrox Upgrade is currently scheduled on an "On-Demand" Basis. To inquire about training and dates, please contact our training team at alex@ecdivers.com. If you have any other questions about the courses, please contact us.

This is the intermediate-level certification course for divers wishing to utilize a closed-circuit rebreather (CCR) for mixed gas diving. The objective of the course is to train divers in the benefits, hazards, and proper procedures for mixed gas diving on the unit-specific CCR, utilizing a mixed gas diluent containing 16 percent or greater oxygen, and to develop intermediate CCR diving skills appropriate to technical diving to a maximum depth of 60 Metres/200 Feet.

Before Class

Step 1.) Complete the Human Factors self-guided training via Edpuzzle. Link below.

Prior to all technical training, we require our students to review a video on Human Factors. Human Factors are a set of “Non-Technical skills” that specifically deal with environmental and organizational factors, plus human and individual characteristics, which influence behavior in team and system-driven environments in a way that can affect health and safety. We specifically focus on communication skills, leadership skills, teamwork skills, decision-making skills, and situation-awareness skills.

NOTE: When entering “Nicknames” in Edpuzzle, please use your full given name that the ECD staff know you by. We use these names to verify completion, and if we can’t verify you have completed the training, we will ask you to do it again.

HUMAN FACTORS PRESENTATION LINK:

We often communicate fluidly with subject matter from this program and require our Technical students to be familiar with it to successfully engage in communication with other students and us when discussing these issues.

 

Step 2.) Complete the TDI Online Training

The CCR MOD 2 “Mixed Gas” online training is Administered by TDI. 

Please head to https://www.tdisdi.com/elearni... and scroll down to the three blue boxes. Enter the code in the far right box. 

As part of the sign-up process with TDI, you can sign in to your existing TDI profile or create a new one. You now have access to the online training, which must be completed before the scheduled Zoom session.

 

Step 3.) Complete the required forms

THIS PROGRAM REQUIRES AN MD SIGN-OFF ON A MEDICAL FORM!!! NO WATERWORK CAN BE COMPLETED WITHOUT MD APPROVAL FIRST!! 

The links below contain a medical form and TDI Liability form. Please return both forms to Alex before the first Zoom session. If you do not complete these forms before the waterwork begins, you will not be able to join the class in the water and may be asked to delay training to a later date.

 

Please complete the medical form with an MD or DO signoff. Hollis requires all CCR students to have a physician sign off before training.

MEDICAL FORM LINK

LIABILITY FORM LINK

Step 4.) Ensure you are prepared to meet the equipment requirements

If you are a drysuit diver, that’s GREAT! All deco courses that we teach in the North Atlantic require a Drysuit. If you are not a drysuit diver, it is not a quick transition from wet to dry. You’ll need to purchase a suit and gain at least 12 - 24 dives of experience to have a chance to lock in with the suit and be prepared to have the control you’ll need to succeed in this class.

Not Sure You're Ready in Your Drysuit?

  • Can you hold position in perfect trim over a single point for 5 minutes or more without more than half a foot of depth change and without constant leg/fin movement?
  • Can you Frog Kick, Helicopter Turn, Back Kick on command in your Drysuit?
  • Do you NEVER lose control in your drysuit or ascend slightly faster or slower than you intended?
  • Can you perform tasks such as writing in wetnotes, clipping or unclipping equipment, communicating with a team member, and Deploying a DSMB without varying in depth more than half a foot?
  • Do you have video proof that you can do these things within these parameters?

If YES, you are probably ready for a Deco CCR course. If not, or you are unsure, we recommend bringing a team member with a camera to a very controlled location (we use Hathaways Pond in Barnstable), having them film you performing skills purposefully there, and reviewing the video.

 

Remember, certification in this course is not guaranteed, and the inability to complete the program in the stipulated number of dives may require private instruction at additional fees.

Required Equipment:

  • A complete Prism2 or SF2. 
    • Any modifications to the unit must be approved by the manufacturer. 
    • 2 independent ways of monitoring all PO2 values
    • 1 backup OC/CCR computer for bailout in the event of system failure. 
  • Mask 
  • Power Fins (No split or hinged fins. Fins should be on one material design (Dense Rubber). Fins must utilize a spring strap system
  • Primary Dive Light. Goodman Mounted. Minimum of 3000 Lumens
  • Backup Dive Light.
  • 1 Cutting Devices (Line cutter preferred, but shears are acceptable. Knives are frowned upon) 
  • Wetnotes
  • Reel (min. 200ft line)
  • Spool (min. 100ft line)
  • Additional Spool (min. 180ft line) (Recommended)
  • Primary DSMB (Not Yellow/Green) (3.5ft - 8ft in height). Must have nipple style inflation option
  • Secondary DSMB (Yellow/Green) (3.5ft - 8ft in height). Must have nipple style inflation option
  • Appropriate Drysuit exposure system. Pockets are required. Pocket shorts are acceptable. (The suit must not be new to you. You must have at least 12 - 24 dives of experience on the exposure system AT MINIMUM! See above warning)
  • Access to an oxygen analyzer
  • Access to Helium Analyzer
  • Bailout gas supply and Delivery system x 2 (Twin 80cf aluminum cylinders recommended though 80cf Baliout and 40cf Deco systems are adequate )
  • Compass (can be computer-integrated)
  • Whistle
  • Minimum age 18
  • Minimum of 50 rebreather hours distributed over a minimum of 50 dives, with at least 25 dives and 25 hours on the specific rebreather unit and at least 10 rebreather dives to 30 metres/100 feet or deeper requiring staged decompression.
  • Certified as a TDI Air Diluent Decompression Procedures Rebreather/ TDI CCR Helitrox Diluent Decompression Procedures Diver course or equivalent from agencies recognized by TDI.

Private courses may be available off-season or during weekdays. Please contact Alex@ecdivers.com for more info.

  • A complete Prism2 or SF2. 
    • Any modifications to the unit must be approved by the manufacturer. 
    • 2 independent ways of monitoring all PO2 values
    • 1 backup OC/CCR computer for bailout in the event of system failure. 
  • Mask 
  • Power Fins (No split or hinged fins. Fins should be on one material design (Dense Rubber). Fins must utilize a spring strap system
  • Primary Dive Light. Goodman Mounted. Minimum of 3000 Lumens
  • Backup Dive Light.
  • 1 Cutting Devices (Line cutter preferred, but shears are acceptable. Knives are frowned upon) 
  • Wetnotes
  • Reel (min. 200ft line)
  • Spool (min. 100ft line)
  • Additional Spool (min. 180ft line) (Recommended)
  • Primary DSMB (Not Yellow/Green) (3.5ft - 8ft in height). Must have nipple style inflation option
  • Secondary DSMB (Yellow/Green) (3.5ft - 8ft in height). Must have nipple style inflation option
  • Appropriate Drysuit exposure system. Pockets are required. Pocket shorts are acceptable. (The suit must not be new to you. You must have at least 12 - 24 dives of experience on the exposure system AT MINIMUM! See above warning)
  • Access to an oxygen analyzer
  • Access to Helium Analyzer
  • Bailout gas supply and Delivery system x 2 (Twin 80cf aluminum cylinders recommended though 80cf Baliout and 40cf Deco systems are adequate )
  • Compass (can be computer-integrated)
  • Whistle
  • Minimum of Seven(7) days of in-water training
  • two(2) academic session and online training
  • Equipment configuration session (as needed)
  • 240 minutes or more of in-water runtime on the applicable CCR unit
  • Maximum of three (3) students per instructor

Open Water Execution:

  • 1. Open water drills practice air diluent dive and 50m fully equipped CCR diver surface tow must be completed prior to conducting mixed gas diluent training dives.
  • 2. A minimum of 360 minutes of open water training must be completed over a minimum of 6 dives, including 1 equipment configuration and drills, and a practice air diluent dive to a maximum of 20 Metres/66 Feet.
  • 3. A minimum of 5 dives must be conducted on mixed gas diluent.
  • 4. All mixed gas dives are to be deeper than 40 Metres/130 Feet, utilizing a mixed gas diluent containing 16 percent or greater oxygen, to a maximum depth of 60 Metres/200 Feet.
  • 5. A minimum of four dives must be decompression dives. At least two dives should be deeper than 50 Metres/165 Feet and at least one dive be to at least 55 metres/180 feet. Decompression must not exceed 60 minutes on a single dive.
  • 6. No more than 3 in-water sessions per day and no more than 2 mandatory decompression dives per day.

Class Forms

Below you will find links to REQUIRED class forms. These forms must be reviewed in their entirety before participating in any ECDivers in-water program. Arrival to class with incomplete documents may result in a forfeiture of that class date. If you have any questions or need assistance in completing the class forms please email our training department at training@ecdivers.com.