1985年 IANTD (International Association of Nitrox and Technical Divers ) Dick Rutkowski
1994年TDI (Technical Diving International )
TDI was founded in 1994 by Bret Gilliam, John Comly, John Crea, David Sipperlyand Mitch Skaggs after a split away from International Association of Nitrox and Technical Divers (IANTD) in 1993.
In 1999, the International Training brand expanded their offerings by starting a sister organization known as Scuba Diving International (SDI) focusing on the sport side of scuba diving.
In 2000, another sister organization was launched called Emergency Response Diving International (ERDI) to teach public safety diving to public safety organizations.
1998年GUE (Global Underwater Explorers) Jarrod Jablonski
He began his career as a cave diving instructor in 1990 and currently holds instructor trainer certifications for GUE, IANTD, NSS-CDS, and the NACD.
1999年SDI (Scuba Diving International)
In 1999, the International Training brand expanded their offerings by starting a sister organization known as Scuba Diving International (SDI) focusing on the sport side of scuba diving.
2009年UTD (Unified Team Diving)
Unified Team Diving was formed in 2009 by Andrew Georgitsis and Jeff Seckendorf. He was formerly the training director at Global Underwater Explorers and a founder of Dive Xtras Inc.
National Association of Underwater Instructors (NAUI)
The agency was founded in 1960 by Albert Tillman and Neal Hess.
The Professional Association of Diving Instructors (PADI) is founded in 1966 by John Cronin and Ralph Erickson. Cronin was originally a NAUI instructor who decided to form his own organization with Erickson, and to break diver training down into several modular courses instead of the single universal course then prevalent