Conditions for teaching trimix or heliox diving in the natural environment
SPACES | MINIMUM DIVER SKILLS | SKILLS | MAXIMUM NUMBER OF DIVERS |
0 to 40 metres | PE-40 + PN-C in training for PTH-40 skills | E-3 + PTH-70 | 4 |
0 to 70 metres | PE-60 + PTH-40 in training towards PTH-70 skills | E-4 + PTH-120 | 4 |
Space from 0 to 80 metres | PE-60 + PTH-70 in training towards PTH-120 skills | E-4 + PTH-120 | 4 |

