Oliver Marsel
- CCR-Cave-Intro
- CCR-Cave-full
- CCR-Cavern
- CCR-DPV
- Dolphin Level1
- Gasblender
- Instructor
- Instructor Trainer
- Instructor Trainer OC
- KISS CLASSIC Level1
- KISS CLASSIC Level2
- KISS CLASSIC Level3
- KISS Sport Level1
- OC-Advanced Trimix-Diver
- OC-Advanced-Nitrox-Open-Water-Diver
- OC-Cave-Introduce
- OC-Cavern
- OC-DPV
- OC-Deco-Diver
- OC-Extended Range-Diver
- OC-Full-Cave
- OC-Nitrox-Diver
- OC-Recreational Trimix-Diver
- PSCR-Level1
- PSCR-Level2
- PSCR-Level3
- Submatix SMS Level1
- Submatix SMS Level2
- Submatrix 100ST Level1