Bernd Schmitz Instruktor Gasblender Instructor OC-Advanced Trimix-Diver OC-Advanced-Nitrox-Open-Water-Diver OC-Deco-Diver OC-Drysuit OC-Extended Range-Diver OC-Nitrox-Diver OC-Recreational Trimix-Diver OC-Rescue OW-Nitrox Diver
