| GO CROSSOVER MINIMUM STANDARDS |
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| INTENT |
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The intent of the program is to provide divers already certified on a unit with additional unit specific training to get certified on an
additional unit, following RESA minimum training standards. |
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| REQUIRED INSTRUCTOR RATING |
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An active status unit specific CCR instructor at the level the candidate is crossing over for |
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| TEACHING RATIOS |
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• The maximum number of students for CCR training is 3:1
• The maximum number of students for no-decompression CCR training where one (1) student is making a crossover or doing a refresher is 4:1
These ratios should be reduced as required if the situation and/or environmental conditions call for it. |
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| STUDENT PREREQUISTES |
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• Be certified as a CCR Diver from a RESA recognized training agency
• Show proof of 10 logged CCR dives in the last 12 months
• Minimum age 18 years
NOTE
• Crossover is not allowed for certifications on SCR or PSCR, or for CCR certifications that only allow a lesser dive depth: in all these cases a full course is mandatory
• Crossover applies to rebreathers of different brand/manufacturers
• Crossovers between similar units of the same brand/manufacturer may require an upgrade course as specified by the manufacturer
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| DURATION |
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• Two days of classroom and diving
• Recommended hours for course completion: 16 to 24
• The number of classes, hours and sessions per day are set by the training agency. |
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| MATERIALS AND EQUIPMENT |
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As specified in the specific diver level course standard
• The minimum required student and Instructor equipment for this program includes:
A complete DT Go CCR Unit that:
• Is compliant to local laws, is approved by the training agency and is properly functioning
• Has no non-manufacturer approved modifications
• Depth gauge & bottom timer, or dive computer
• A single off-board bailout gas suitable for a safe return to the surface from the planned maximum depth including all safety and decompression stops in the event of an emergency
• For Open water and lake environments with the exception of cave/overhead environments a Delayed Surface Marker Buoy (DSMB) and a spool / reel appropriate for the planned dive depth.
• Cutting device
• Access to an appropriate gas analyzer
The minimum required student and instructor materials for this program includes:
• DT Go Rebreather unit specific user manual
• Agency student training manual or online training course
• Agency instructor manual (electronic instructor manuals meet this requirement)
• Course liability release and assumption of risk (in accordance with local laws)
• Training agency approved medical document
• Unit specific checklist (units equipped with a built-in electronic checklist, meet this requirement)
• Manufacturer’s sign off sheet/course completion document
All skills must be demonstrated by the instructor on the specific unit being trained |
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| REQUIREMENTS FOR COMPLETION |
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The crossover course will include:
• CCR assembly workshop.
• A 60 minute water skills evaluation in a confined skill session. All skills from the level the candidate is crossing over at must be demonstrated successfully prior to open water dives.
• Complete a minimum of 4 open water dives and a total accumulated dive time of minimum 240 minutes, demonstrating proficiency in all skills from the level the diver is crossing over at
• Complete a final exam with a passing score as specified by the Training Agency and the Manufacturer.
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| DEPTH LIMITATIONS |
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• Open Water Training Dives shall be initially shallow, progressively increasing in depth.
• Two (2) dives must be deeper than 20 meters/65 feet for certification
• All dives must be conducted at a depth shallower than 30 meters/98 feet. |
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| NOTES |
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• All training dives must be planned within the no-decompression limits of the Combined Air/EAN Tables or the student’s personal dive computer or computer-generated decompression profiles.
• Bailout cylinder gas is to be based on a maximum PPO2 of 1.6 at the maximum depth of the dive.
• Divers should not carry an on-board diluent gas with a PPO2 higher than 1.1 bar at the bottom.
• The maximum loop set point is 1.3 bar.
• It is recommended that the student finish the training course within 6 weeks of the starting date.
• It is recommended that the student have access to, or purchase a unit within 3 months of completing the training program.
• Only approved training agencies and instructors may teach a DT Go rebreather course.
Diving in an overhead environment
This course shall not be conducted in an overhead environment. Subject to training agency approval certain dive sites can be deemed suitable for the CCR Diver course under the following conditions:
• The student must remain in the daylight zone where there is no need for the use of a dive light
• The student must never be a distance of more than 132 linear feet / 40 linear meters from the surface |
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| CERTIFICATION |
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The unit specific CCR Diver certification entitles the holder to dive with a buddy, diving on a rebreather or diving open circuit, utilizing CCR diving procedures to make non decompression dives to depths of up to 30 meters/98 feet, providing that dives are conducted in environments similar to those of the diver’s training and experience. |
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