COMPARE DIVER COURSES WITH THIS EQUIVALENCY CHART (PADI, SDI, SSI)
All information is current at the time of publication. Over time, as organizations update their standards and create new courses, the information in this table may become outdated and is subject to change without any given notice.
PADI
| Skin Diver |
| Discover Scuba Diver |
| Bubble Maker |
| ReActivate™ – Scuba Refresher |
| Not Applicable |
| Not Applicable |
| Scuba Diver |
| Open Water Diver |
| Not Applicable |
| Rescue Diver |
| Master Diver |
| Not Applicable |
| Advanced Open Water Diver |
| Peak Performance Buoyancy |
| Altitude Diver |
| Aware – Fish Identification |
| Aware – Coral Reef Conservation |
| Boat Diver |
| Cavern Diver |
| Multilevel Diver |
| Enriched Air Diver |
| EFR CPR & AED |
| Deep Diver |
| Diver Propulsion Vehicle Diver |
| Discover Rebreather |
| Drift Diver |
| Dry Suit Diver |
| Equipment Specialist |
| Not Applicable |
| Ice Diver |
| Project AWARE® Specialist |
| Night Diver |
| Not Applicable |
| Search and Recovery Diver |
| Not Applicable |
| Sidemount Diver |
| Self Reliant Diver |
| Rebreather Diver |
| Not Applicable |
| Underwater Nagivator |
| Digital Underwater Photography |
| Underwater Videographer |
| Not Applicable |
| Wreck Diver |
Distinctive Specialties |
| Aware – Shark Conservation Diver |
| Invasive Lionfish Tracker |
| Sea Turtle Awareness |
| Whale Shark Awareness |
| PADI Free Diver |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Not Applicable |
SDI
| Snorkeler |
| Scuba Discovery |
| Future Buddies |
| Inactive Diver / Refresher |
| Shallow Water Diver |
| Supervised Diver |
| Not Applicable |
| Open Water Scuba Diver |
| Advanced Diver |
| Rescue Diver |
| Master Diver |
| Scubility Diver |
| Advanced Adventure Diver |
| Advanced Buoyancy Control |
| Altitude Diver |
| Marine Ecosystems Awareness Diver |
| Marine Ecosystems Awareness Diver |
| Boat Diver |
| TDI Cavern Diver |
| Computer Diver |
| Computer Nitrox Diver |
| CPROX 1st AED |
| Deep Diver |
| Diver Propulsion Vehicle |
| TDI Rebreather Discovery |
| Drift Diver |
| Dry Suit Diver |
| Equipment Specialist |
| Full Face Mask Diver |
| Ice Diver |
| Marine Ecosystems Awareness Diver |
| Night/Limited Visibility Diver |
| Research Diver |
| Search and Recovery Diver |
| Shore/Beach Diver |
| Sidemount Diver |
| Solo Diver |
| Not Applicable |
| UW Hunter and Collector |
| UW Navigation Diver |
| UW Photographer |
| UW Videographer |
| Visual Inspection Procedures |
| Wreck Diver |
Unique Specialties |
| Shark Diver |
| Lionfish Eradification Diver |
| Turtle Awareness Diver |
| Not Applicable |
| Not Applicable |
| Goliath Grouper Awareness Diver |
| SDI Fill Station Operator |
| Heritage Awareness Diver |
| Kayak Diver |
| Manatee Awareness Diver |
| River Diver |
SSI
| Snorkel Diver |
| TRY SCUBA DIVING |
| Scuba Rangers |
| Scuba Skills Update |
| Not Applicable |
| Not Applicable |
| Scuba Diver |
| Open Water Diver |
| Advanced Open Water Diver |
| Diver Stress & Rescue |
| Master Diver |
| Classified Diver |
| Advanced Adventurer |
| Perfect Buoyancy |
| Altitude Diving |
| Not Applicable |
| Not Applicable |
| Boat Diving |
| Extended Range (XR) Cavern Diving |
| Not Applicable |
| Enriched Air Nitrox Diver |
| REACT RIGHT |
| Deep Diving |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Dry Suit Diving |
| Equipment Techniques |
| FFM |
| Ice Diver |
| Ecology |
| Night & Limited Visibility |
| Not Applicable |
| Search & Recovery |
| Waves, Tides, & Current |
| Recreational Sidemount Diving |
| Independent Diver |
| Rebreather Diver |
| Not Applicable |
| Navigation |
| Underwater Photography |
| Not Applicable |
| Not Applicable |
| Wreck Diver |
Additional Specialties |
| Shark Diver |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Basic Free Diver |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| Not Applicable |
| River Diver |
It is recommended to all SDI, TDI, and ERDI instructors that they verify new students can demonstrate skills required in previous courses. As a result, if you are enrolling in an SDI, TDI, or ERDI course and coming from another organization you may be required to do a check-out dive with your instructor to verify that your skills and knowledgebase line up appropriately for the course, prior to commencement of training. We also recommend divers take a refresher course after a period of not diving, this period, while not a hard and fast rule, is about a year. This simply means that even though you hold a certification it is always a good idea to go on a dive with a professional and refresh your knowledge and skills.