Commercial Divers International is Arizona's first surface-supplied diving, underwater welding, and hyperbaric medicine training school. Founded by industry experts and US Navy SEAL instructors, CDI is the only diving school built specifically to provide the knowledge and skills relevant in the field of commercial diving today. Students receive the entry level tender/diver ADCI certification upon graduation allowing them to begin their career in inland, offshore, hazmat, salvage, or saturation diving. Our program exceeds the ANSI standards providing training in diving physics, diving physiology & medicine, air/mixed gas decompression tables and charting, hyperbaric chamber operation, topside and underwater welding, seamanship and rigging, underwater hydraulic and pneumatic tools usage, offshore safety, SCUBA, surface-supplied air diving, surface-supplied mixed gas diving, and more.