- Open Circuit
- Open-Water-Nitrox Diver
- Advanced-Nitrox-Open-Water-Diver
- Nitrox-Diver
- Deco-Diver
- Extended-Range-Diver
- Sidemount-Diver
- Cavern Level I
- Cave Introduce Level II
- Full Cave Level III
- Rebreather
- Hollis-Explorer- Level1
- Hollis-Prism2-Level1
- Cavern Level I
- Cave Introduce Level II
- Full Cave Level III
