In 1994 Bret Gilliam (previously vice President of IANTD) and Mitch Skaggs created the third to live technical agency, Technical Diving International known more commonly as TDI . Today, TDI is the most successful agency counting over 10'000 active instructors and 50 regional offices worldwide. TDI was also the first agency to offer training on rebreather's and the first workshop was held in 1995.

SDI, the recreational branch of TDI was developed later on the request of TDI instructors and the first courses where opened in 1999. SDI is as fast growing as TDI was in the tec field, thanks to a very active marketing. Scuba Diving International offers essentially the same style curricula as other sport agencies but with a few innovative twists that have already created some excitement in the industry.

This course examines the use of EAN 21 through 100% (oxygen) for optimal mixes to a depth of 130fsw/40msw. The object of this course is to train divers in the benefits, hazards and proper procedures for utilizing EAN 21 through 100% (oxygen) for dives not requiring staged decompression. (Decompression techniques may be combined with this course at the discretion of the instructor).

	3 Days		4 Dives
	Additional physics and physiology along with some advanced dive planning
	100 minutes of bottom are required
	More Info	500.00 USD	Online Booking

This course provides training and experience to competently conduct advanced wreck dives. This program includes penetration skills and techniques. Depths shall not exceed the level in which the diver is trained and competent, but in no case shall the maximum depth in this program exceed one hundred eighty (180) fsw / fifty five (55) msw. The objective of this course is to train divers in the proper techniques, equipment requirements and hazards of wreck diving.

	4 Days		6 Dives
	Use of guidelines and land drills. Life support equipment, redundancy
	Wrecks specifics
	More Info	1000.00 USD	Online Booking

This course examines the theory, methods and procedures of planned stage decompression diving. The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 150fsw/45msw unless taught in conjunction with advanced nitrox, Extended Range or Advanced Wreck Courses. The most common equipment requirements, gear set-ups, decompression techniques and decompression mixtures (including oxygen and nitrox) are presented.

	3 Days		4 Dives
	Decompression understanding is the key feature of this advanced diving course
	Psychological aspects of advanced diving
	More Info	450.00 USD	Online Booking

This course provides training and experience required to competently utilize air for dives up to one hundred and eighty (180) fsw / fifty five (55) msw that requires staged decompression, utilizing Nitrox mixtures or oxygen during decompression. The objective of this course is to train divers in the proper techniques, equipment requirements, and hazards of deep air diving to a maximum of one hundred eighty (180) fsw / fifty five (55) msw utilizing Nitrox mixtures or oxygen for staged decompression.

	6 Days		6 Dives
	Deep air diving and gas management
	Dive planning, emergency planning and procedures
	More Info	815.00 USD	Online Booking

This course provides the training required to competently and safely utilize breathing gasses containing helium for dives that require staged decompression, utilizing nitrox and/or oxygen mixtures during decompression to a maximum depth of 200fsw/60msw.

	6 Days		6 Dives
	Physics and physiology related to helium
	HPNS, narcosis and isobaric Counter diffusion
	More Info	815.00 USD	Online Booking

This course provides the training required to competently and safely utilize breathing gasses containing helium for dives that require staged decompression, utilizing nitrox and/or oxygen mixtures during decompression to a maximum depth of 300fsw/100msw.

	5 Days		4 Dives
	Hypoxic mixtures and hypoxia
	Dive planning, team planning, emergency planning and procedures
	More Info	1250.00 USD	Online Booking

This is the entry-level certification course for recreational divers wishing to utilize a nitrox semi closed circuit rebreather (benefits, hazards and proper procedures are comprehensively taught).

	3 Days		4 Dives
	History of rebreather's and the breathing loop
	Specific rebreather knowledge
	More Info	615.00 USD	Online Booking

This is the entry-level certification course for recreational divers wishing to utilize a nitrox closed circuit rebreather (benefits, hazards and proper procedures are comprehensively taught).

	5 Days		6 Dives
	Closed circuit rebreather diving and history
	Risk management and bailout procedures
	Rebreather specifics
	No Additional Info	1190.00 USD	Online Booking

The objective of this course is to train candidates in the proper technique equipment requirements and hazards involved in blending nitrox gases for recreational scuba.

	1 Days		No Diving
	Responsibility 's of the gas blender
	Mixing panels and procedures
	Oxygen handling and analysing
	More Info	215.00 USD	Online Booking

The objective of this course is to train candidates in the proper procedures needed for the preparation and blending of high quality gasses.

	1 Day		No Diving
	Diving gases, air, nitrox, heliox, trimix ...
	Triangle of fire and O2 handling
	Oxygen/Helium handling and analysing
	More Info	190.00 USD	Online Booking

This course enables the successful candidate to engage in the preparation of scuba equipment for Technical Diving Gases. The objective of this course is to train candidates in the proper procedures required for oxygen equipment cleaning.

	1 Day		No Diving
	Oxygen handling and oxygen compatible components
	Oxygen cleaning requirements
	More Info	190.00 USD	Online Booking