CCR DIVER 30 COURSE

The POSEIDON CCR Diver 30 Course is an entry-level program designed to introduce divers to the world of rebreathers, with a specific focus on the Poseidon Se7en units.

The course covers rebreather functionality, types of systems, equipment assembly, pre-dive check procedures, in-water skills, emergency protocols, as well as disassembly and maintenance.

This training complies with ISO 24804 international standards and is certified directly by POSEIDON through the POSEIDON PRO ACADEMY, ensuring high-quality instruction aligned with the brand’s standards.

PREREQUISITES

• Be at least 18 years of age.

• Hold an Advanced Open Water Diver certification issued by an international organization recognized by Poseidon.

• Hold a Nitrox 40 Specialty certification issued by an international organization recognized by Poseidon.

• Have a minimum of 20 documented decompression dives recorded in the diver’s logbook.

• Submit a valid Medical Statement.

• Hold mandatory dive accident insurance covering dives up to 30 meters and the use of CCR (Closed Circuit Rebreather)

COURSE PLANNING

The POSEIDON CCR DIVER 30 course is conducted over four (4) days. It includes a first day dedicated to theory, equipment assembly, pre-dive checks, land drills, and one (1) confined water dive. The remaining three (3) days involve open water diving with a minimum of six (6) dives and at least 420 minutes of in-water rebreather use.

SCHEDULE

DAY 1

• Theory Session 1

• Theory Session 2

• POSEIDON CCR configuration workshop

• Confined Water Dive

DAY 2

• Dives 1 & 2

DAY 3

• Dives 3 & 4

DAY 4

• Dives 5 & 6

THEORY TOPICS

• History of CCR and Rebreathers

• POSEIDON CCR evolution

• How a CCR works

• Types of rebreathers:

  • SCR

  • CCR

  • mCCR

  • eCCR

  • SSR

• CCR configurations:

  • Backmount

  • Chest mount

  • Sidemount

• POSEIDON CCR mechanics:

  • Assembly/disassembly

  • Checklists

  • Unit design overview

  • Canister and Sofnolime

  • Loop, BOV, minimum/optimal loop volume

• Gas physiology:

  • Oxygen risks (hypoxia, hyperoxia)

  • CO2 toxicity (hypercapnia)

  • Nitrogen absorption

  • Benefits of Trimix with 20% O₂ and 35% He

• Canister filling

• Manual vs electronic systems

• O₂ metabolism calculations

• O₂ sensors and calibration

• Dive planning and constant PO₂ theory

• CNS and OTU management

• Dive computers:

  • Gas mix settings

  • Constant PO₂

  • Gradient factors/conservatism

  • Integrated O₂

• Dive planning:

  • Operational planning

  • Gas consumption

  • Canister duration

  • Gas requirements including bailout scenarios

  • O₂ and N₂ exposure limits

• Emergency procedures:

  • Flooded loop

  • Cell/battery/electronic failures

SKILL DEVELOPMENT

• Pre-dive checks & checklists

• Unit setup and canister filling

• Loop verification:

  • Non-return valves

  • Positive/negative pressure checks

• O₂ and Diluent gas analysis

• Dive planning:

  • System performance limits

  • PO₂-based exposure limits

  • N₂ absorption at planned depth & setpoint

  • Gradient factors and conservatism

  • Thermal considerations

• Familiarization with BOV

• Bubble checks (3–6m stop)

• Adjusting OPV and counterlungs

• Emergency procedures:

  • Bailout transitions

  • Gas loss/malfunction scenarios

  • Hose or loop damage

  • Flooded canister

  • CO₂ buildup

  • Low/high O₂

  • Electronic/battery failure

  • Switching to open circuit

• Rescue techniques

• Buoyancy control

• Manual PO₂ control and HUD use

• Dive computer navigation

• DSMB deployment

• Mask removal/replacement

• Dive execution within limits

• Performing safety stops

• Maintaining loop volume

• Sensor checks using O₂ and diluent

• Post-dive cleaning:

  • BOV and hoses

  • Unit disinfection

  • Component inspection and maintenance

  • Cell replacement

  • Battery charging

  • Dive logging via POSEIDON REEF App

DEPTH LIMITS

• At least two (2) dives must exceed 20 meters

• All dives are limited to a maximum depth of 30 meters

RATIO

• Minimum group: 2 students

• Maximum group: 3 students

COURSE PRICE: 999€

INCLUDED

• Learning materials + exam

• All theory sessions

• Minimum of 1 confined water dive

• Minimum of 6 open water dives

• POSEIDON International Certification

NOT INCLUDED

• RSTC Agency Certification Price

• Student accommodation

• Student meals

• Student expenses:

  • Gas fills (each student pays theirs directly at the dive center)

  • Boat dives (paid directly at the dive center)

  • Pool rental (each student pays their own share)

• Instructor expenses (to be split among students):

  • Instructor gas fills

  • Boat dives

  • Pool rental

  • Instructor travel (fuel, tolls)

  • Instructor accommodation

  • Instructor meals

• VAT

EQUIPMENT RENTAL IF NECESSARY

• POSEIDON Se7en+ CCR Rental: 249€ per person/course

• POSEIDON M28 Bailout Computer: 10€/day

• Stage Cylinder Rental: 10€/day

• POSEIDON Stage Regulator: 10€/day

• Sodalime: 10€/kg

AFTER THE COURSE

Upon successful completion, you'll be certified to dive with the POSEIDON Se7en without direct or indirect supervision with other CCR divers, to a maximum depth of 30 meters, in no-decompression dives.

You can then continue your progression with the next level:

→ POSEIDON CCR DECO DIVER 45

CONTACT US

Have any questions or need assistance? Our team is here to help you with all your inquiries. Whether you’re looking for more details about our products, services, or need support, feel free to reach out. We’ll get back to you as soon as possible!