CCR DECO DIVER 60 COURSE

This course is designed to teach you how to plan and perform dives using a POSEIDON Se7en rebreather with multiple decompression stops, using trimix as the diluent gas.
You’ll work with mixes containing a minimum of 16% oxygen (O₂) and up to 100% O₂ for decompression, with a maximum depth of 60 meters.

The course strictly focuses on the POSEIDON Se7en rebreather.

PREREQUISITES

• Must be at least 18 years old.

• Certified as a POSEIDON CCR Deco Diver (40/45 m).

• Minimum of 50 logged dives on the Poseidon CCR, including:

  • At least 20 dives below 30 m

  • At least 10 dives requiring decompression

• Valid medical declaration for diving.

• Mandatory dive insurance covering CCR up to 60 meters.

COURSE PLANNING

The course spans four (4) days:

Day 1:

• Theoretical session 1

• Theoretical session 2

• Stage tanks configuration workshop

• Dives 1 and 2 (no decompression)

Day 2:

• Dives 3 and 4

Day 3:

• Dive 5

Day 4:

• Dive 6

• Final theory review

Minimum total CCR time in water: 360 minutes.

Theory Sessions

• Gas physiology

• Oxygen toxicity (Hypoxia, Hyperoxia)

• CNS and OTU management

• O2 metabolization calculations

• CO2 toxicity (Hypercapnia)

• N2 absorption

• Equivalent Narcotic Depth theory

• He absorption

• SNAP

• Gas mixes

• Work formula

• Manual control of the Poseidon CCR

• Dive tables

• Creation of custom deep diving tables

• Creation of a low PO2 Diluent to assist in loop flush or deep bailout

• Dive computers

• Mix adjustment

• Constant PO2

• Conservatism/Gradient Factors

• Integrated O2

• Dive planning

• Operational planning

• Gas consumption

• Lime duration

• Gas requirements, including bailout scenarios

• Decompression on a Poseidon CCR

• O2 limitations

• N2 limitations

• He limitations

• Unit assembly

• Loop configurations

• Checklists

• Equipment maintenance

• O2 cell management

  • Expiration date

  • Replacement

• Additional equipment and modifications

  • Manual diluent injector

  • Manual O2 injector

  • BOV

  • HUD

  • Integration of O2 monitoring into the computer

Skills

• Pre-dive checks

• Checklist

• Unit assembly

• Canister filling

• Loop verification:

  • Non-return valves

  • Positive pressure check

  • Negative pressure check

• Analyze gases in O2 and diluent tanks

• Show good buddy awareness and team-oriented diving practices

• Bubble check at 3–6 m stop

• Demonstrate buoyancy control while remaining still in the water column without moving hands or fins

• Remove and replace the mask

EMERGENCY PROCEDURES

• Correctly perform recovery from a failed CCR and complete the dive and decompression with OC bailout gases

• Correctly perform recovery from a failed CCR and complete the dive and decompression with the unit in manual mode

• Gas failures and losses, correct choice and switch to bailout gases

• Broken hoses

• Flooded canister

• Cell failures

• Set Poseidon CCR to O2 CCR mode at a maximum depth of 6 m

• Demonstrate control of both (2) bailout bottles, leaving them on the bottom and reattaching them without changing position in the water column

• Buoy deployment

• Simulate buoy deployment failure (use bailout buoy)

• In two (2) dives, demonstrate ascent using the buoy reel, performing decompression stops

• Control of O2 setup levels

• Execute dive within predetermined dive limits

• Demonstrate decompression stops at designated depths

• Demonstrate rescue skills

• Check cells using appropriate O2 and diluent use

• Demonstrate proper team diving procedures, performing a rescue below thirty (30) meters

• Demonstrate ability to connect and share external bailout gases

• Poseidon CCR cleaning after dive

  • BOV and hoses

  • Clean and disinfect the unit

  • Inspect unit components

  • Unit maintenance

  • Cell removal and replacement

  • BOV care

  • Battery recharge

• Dive log in POSEIDON REEF app

DEPTH LIMITATIONS

• At least two (2) dives must be conducted below 30 m.

• Two (2) additional dives must be conducted below 50 m.

• The maximum depth for all dives is 60 m.

NOTES

• Dives 1 and 2 must be planned within no-decompression limits

• Planned decompression obligation (total ascent time, including all stops) must not exceed thirty (30) minutes for dives 3 and 4, and sixty (60) minutes for dives 5 and 6

• At least one (1) dive must have a total duration longer than sixty (60) minutes

• If environmental or water conditions make it unsafe or impractical to meet the cumulative time (360 minutes) in the six (6) dives, additional dives must be scheduled to meet it

• Bailout gas must have a maximum PO2 of 1.6 ATA at the MOD of the dive

• The maximum PO2 of the diluent gas will be 1.2 ATA at depth

• The maximum loop setpoint will be 1.3 ATA

• Equivalent Narcotic Depth must not exceed thirty (30) meters at depth

RATIO

• Minimum group: 2 students

• Maximum group: 3 students

COURSE PRICE 1249€

INCLUDED

• Digital materials + exam

• All theory sessions

• Minimum of 1 evaluation dive

• Minimum of 5 training dives

NOT INCLUDED

• RSTC agency certification

• Student accommodation and meals

• Student expenses:

  • Gas fills (paid directly at dive center)

  • Boat dives (paid directly at dive center)

  • Pool rental (paid directly at the place)

• Instructor expenses (shared among students):

  • Gas fills

  • Boat dives

  • Pool rental

  • Travel (fuel & tolls)

  • Accommodation and meals

• VAT

EQUIPMENT RENTAL IF NECESSARY

• Poseidon Se7en CCR: 249 €/course

• Poseidon M28 Computer: 10 €/day

• Stage bottle: 10 €/day

• Poseidon stage regulator: 10 €/day

• Sofnolime: 10 €/kg

AFTER THIS COURSE

Once successfully certified, you’ll be qualified to dive independently using the Poseidon CCR Se7en with trimix as a diluent up to a depth of 60 meters.

You can then continue your progression with the next level:

→ POSEIDON CCR TRIMIX 100M

The course meets ISO 24806 standards.

The course is certified directly by POSEIDON, to ensure training quality in line with the brand's standards, through the POSEIDON PRO ACADEMY, which is certified:

• ISO 9000:2015

• ISO 45000:2018

• ISO 14000:2015

• ISO 27001:2018

• ISO 179002:2018 (Health Services)

REQUIRED EQUIPMENT

• Poseidon CCR with Trimix 60 battery

• Manual Diluent and O2 Injectors

• Stage bottle with Bottom Gas

• Stage bottle with Decompression Gas 1

• Stage bottle with Decompression Gas 2

• OC/CC bailout computer

• 3RD Sensor POD Incl. T-Coupling

• Buoy and Spool

• Backup buoy and spool

• Backup mask

• Cutting tool

CONTACT US

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