Certification
Certification
TDI SF2 eCCR 30m Air Diluent Diver is the entry closed-circuit rebreather course on the rEvo SF2 unit. You are not becoming a decompression diver on this card. You learn SF2-specific assembly, pre-dive checks, buoyancy, bailout planning and air-diluent diving within no-decompression limits to thirty metres.
TDI requires at least seven open water dives and four hundred twenty minutes on the unit before certification. Classroom and confined water sessions come first. Most candidates arrive with nitrox training and twenty logged open circuit dives, then discover that CCR hours feel longer than the same time on twins because your hands never stop moving.
Unit-specific means exactly that. Skills on the SF2 do not automatically transfer to another rebreather without crossover training. Pre-dive checklist repetition feels tedious until it is automatic, which is the point.
TDI SF2 30m Air Diluent is assessed in the water and through practical unit workshops. Your instructor signs off skills and dive objectives until performance requirements are met.
Quick answers about this qualification. For anything else, use live chat or browse bookable activities below.
Find activitiesIt is the entry-level TDI closed-circuit rebreather qualification on the rEvo SF2 unit, diving air diluent within no-decompression limits to thirty metres. Training is unit-specific to the SF2.
It is not a generic CCR card. Another rebreather model requires separate crossover training even if you hold this certification.
Minimum eighteen years old, twenty logged open water dives and nitrox certification or TDI equivalent.
Leave a comment when you book with your dive count and recent diving history. Instructors prefer honest logbooks to surprised students on day one.
TDI requires at least seven open water dives and four hundred twenty minutes on the SF2 unit, plus confined water and classroom time.
Weather, cell issues or student pace may extend the schedule. CCR courses rarely finish early.
No on this card. SF2 30m Air Diluent stays within no-decompression limits. Staged decompression on the SF2 begins on SF2 40m Air Diluent Decompression Procedures.
Do not plan deco dives on a thirty-metre card. Insurance and agency rules are unforgiving.
No. Certification is SF2 unit-specific. Moving to another rebreather requires manufacturer or TDI crossover training on that unit.
Think of SF2 training like type rating on an aircraft. The physics overlap; the hardware does not.
Usual dive kit plus backup mask, suitable exposure protection and any personal CCR components your centre allows. Most schools supply SF2 units for training.
Leave a comment when you book about sizing, bailout cylinder preferences and whether you own compatible fins and wing.
TDI courses include knowledge development and briefings. Assessment is primarily practical skills and dive objectives on the unit.
Your instructor clears weak topics in debriefs rather than springing a classroom final without warning.
SF2 40m Air Diluent Decompression Procedures adds staged decompression on the same unit, then helitrox and mixed-gas pathways with logged CCR hours between steps.
Build shallow repetitive CCR dives before chasing depth on every outing.
More demanding than open circuit at the same depth. You manage buoyancy, loop volume, cells and bailout simultaneously.
Students who treat the checklist as optional struggle. Students who embrace boring repetition usually cert cleanly.
Many centres allow training on personally owned units after inspection. Confirm scrubber, cells and firmware support before you travel.
Training on your own unit speeds up post-course diving but increases pressure when something fails during class.
adventuro lists TDI centres offering SF2 CCR training at quarries and coastal sites with unit inventory. Compare hire fees, bailout policies and minimum dive counts accepted.
Book when you can commit to a full CCR week without rushing travel after the final dive.
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