Richard Studer
- Explorer-Hollis Level1
- rEvo III Level1
- rEvo III Level2
- rEvo III Level3
- CCR-Cavern
- CCR-Cave-Introduce
- CCR-Full-Cave
- Gasblender
- Instructor
- Instructor Trainer
- Instructor Trainer OC
- OC-Advanced Trimix-Diver
- OC-Advanced-Nitrox-Open-Water-Diver
- OC-Cavern
- OC-Cave-Introduce
- OC-Full-Cave
- OC-Deco-Diver
- OC-Extended Range-Diver
- OC-Nitrox-Diver
- OC-Sidemount-Diver