Conditions for exploration diving with trimix or heliox in the natural environment
SPACES | SUPERVISED DIVING | SCUBA DIVING | |||
Minimum skills | Maximum number | Competence | Minimum skills | Maximum number | |
0 to 40 metres | PE-40 + PTH-40 | 4 | E3 + PTH-40 | PA-40 + PTH-40 | 3 |
Space from 0 to 70 metres | PE-60 + PTH-70 | 4 | E4 + PTH-70 | PA-60 + PTH-70 | 3 |
Space from 0 to 80 metres | PE-60 + PTH-120 | 4 | E4 + PTH-120 | PA-60 + PTH-120 | 3 |
Space beyond 80 metres and up to 120 metres | PA-60 + PTH-120 | 3 | |||

