(Cavern & Cave Diver Training Programs)

Standards	CVN L2	CAV L3	CVX L4	CVX L5
Max. Course Depth	30 m	50 m	50 m	58 m
Min. Course Depth	10 m	18 m	30 m	30 m
Max Deco	N/A	30 min	as req'd	as req'd
Max PO₂ Deco	N/A	1.6 PO₂	1.6 PO₂	1.6 PO₂
Gas Limits - Oxygen	1.45 PO₂	1.45 PO₂	1.45 PO₂	1.45 PO₂
Gas Limits - N₂	4.0 PN₂	4.0 PN₂	4.0 PN₂	4.5 PN₂
Theory Time	6-8 Hrs incl exams & evaluation	10 Hrs incl exams & evaluation	8 Hrs incl exams & evaluation	8 Hrs incl exams & evaluation
Min. # of OW Dives	4 ¹	8	6	4
Min. Bottom Time	140 min	240 min	180 min	150 min
Min. Run Time	160 min	320 min	360 min	240 min
Prerequisites²	CSU + AOW or equivalent	CVN + TSD or equivalent	CAV + ERD + 100 dives + 10 deeper than 30 m	CAV + TMD + +200 dives + 50 deco dives + 25 Cave Dives

1 - Four dives in two different caverns
2 - other prerequisites may apply as per the Instructor all bottom times and # of dives listed are considered minimums