Manfred Gleichweit
- Instuctor
- OC-Open Water Nitrox Diver
- OC-Advanced-Nitrox-Open-Water-Diver
- OC-Nitrox-Diver
- OC-Normoxic Trimix-Diver
- OC-Decompression-Diver
- OC-Recreational Trimix-Diver
- OC-DPV-Diver
- OC-Drysuit-Diver
- OC-Dive Guide
- OC-Rescue-Diver
- OC-Sidemount-Diver
- OC-Wreck-Diver
- OC-Current-Diver
- OC-River Diver
- OC-Night-Diver
- Gasblender