Emergency Response Diving International

Emergency Response Diving International (ERDI) is the youngest member of the ITI family, formed in 2000. ERDI provides highly specialized training for police, fire service, and other public safety personnel, addressing search and rescue techniques in various and sometimes hazardous underwater environments, for both divers and dive tenders. Following that tradition of innovation already established by its older siblings, ERDI was the first independent agency to offer this type of formalized curriculum on a national basis. Unlike its siblings, however, many of the ERDI programs fall outside the realm of recreational diving. ERDI programs are compliant with all standards and protocols, applicable in the United States, as mandated by OSHA (Occupational Safety and Health Organization) and NFPA (National Fire Protection Association).

Technical Divemaster

Technical Divemaster is the initial leadership level in the TDI curriculum; prerequisites include certification as both an SDI Divemaster and a TDI technical diver.

The TDI Technical Divemaster is qualified to:

• Assist an active TDI Instructor during approved technical diving courses, provided the activities are similar to the Divemaster’s prior training;
• Supervise and conduct dives for certified technical divers, provided the activities are similar to the Divemaster’s prior training.

Instructor

An SDI Instructor is the professional primarily responsible for training and certifying sport divers. Prerequisites include certification as an SDI Divemaster or SDI Assistant Instructor (or equivalent). After successful completion of both an Instructor Development Course and an Instructor Evaluation Course, the SDI Instructor independently may conduct all core diver and leadership courses from Open Water Diver thru Assistant Instructor, as well as the Advanced Adventure Diver specialty. An SDI Instructor must be separately qualified and approved for each additional specialty diver course which he or she wishes to offer.

A TDI Instructor is the professional primarily responsible for training and certifying technical divers. Naturally, certification as an SDI Instructor (or equivalent) is a prerequisite, as well as certification as a technical diver at the appropriate level. After successfully completing a Technical Instructor Course for each technical level, the TDI Instructor may conduct technical diver and Technical Divemaster programs at that level.

Recreational Scuba Training Council and World Recreational Scuba Training Council

 The Recreational Scuba Training Council (RSTC) is an association of diver training agencies dedicated to safety in recreational sport diving and the development of consistent minimum training standards. Separate councils have been established in the United States, Canada, Europe, and Japan (the C-Card Council); together these regional councils form the World Recreational Scuba Training Council (WRSTC).

SDI is proud to be a member of RSTC in the United States, Canada, and Europe. Additional members currently include ACUC (Canada, Europe), Barakuda (Europe), DAN-Europe (Europe), IDEA (US, Europe), NASDS (Europe), PADI (US, Canada, Europe, Japan), PDIC (US), PSS (Europe), SNSI (Europe) and SSI (US, Europe, Japan).

RSTC/WRSTC minimum training standards currently address introductory scuba programs, as well as sport diving certifications at the Open Water Diver, Rescue Diver, Nitrox Diver, Dive Supervisor / Divemaster, Assistant Instructor, Instructor and Instructor Trainer levels.

Naturally, all corresponding programs and courses offered by SDI are in compliance with RSTC/WRSTC minimum standards.

Pressure and Volume Calculations (cont.)

The original formula again can be appropriately transposed to find the ending pressure following a specific change in volume. Here the following formula will apply: