AOWD Plus PADI Rescue Diver PADI Divemaster PADI Assistant Instructor BASC Ocean Diver BASC Club / Diver PDIC Nitrox Diver PDIC Specialty Diver & Technical Diver PDIC Dive Supervisor HKUA Hong Kong Underwater Association / Stress & Rescue Speciality SSI Master Scuba Diver SSI Dive Control Specialist SAA Open Water Diver SAA Advanced Open Water Diver SAA Club / PADI Professional Association of Diving Instructors / National Association of Scuba Diving / WRSTC / NAUI National Association of Underwater Instructors / RSTC / Activites Subaquatiques World Confederation of Underwater Activities / /