Alexander Kornek Österreich
- Open Circuit
- Open Water Nitrox Diver
- Advanced-Nitrox-Open-Water-Diver
- Nitrox-Diver
- Decompression-Diver
- Recreational Trimix-Diver
- Normoxic Trimix-Diver
- Rebreather
- Divesoft-Liberty-Level1
- Divesoft-Liberty-Sidemount Level1
- Divesoft-Liberty-Backmount Level1
