Technical Diving International

  technical diving international


Who is TDI?

TDI is the largest technical certification agency in the world.  As one of the first agencies to provide training in mixed gas diving and rebreathers, TDI is seen as an innovator of new diving techniques and programs which previously were not available to the general public.  Training with TDI has provided divers with the opportunity to see such wrecks as the Andrea Doria, Lusitania and the Prince of Wales.  TDI divers have explored underwater caves in Spain, Australia and Mexico and assisted as support divers on world record freedives done in the Red Sea.

TDI’s professionals are held to the highest standard to ensure quality training throughout the world.  This means that as a diver taking a TDI course, your instructor will have documented his experience and knowledge prior to achieving that rating.  As an instructor candidate taking a TDI course, your TDI instructor trainer will have gone through the paces to achieve the highest level of training that TDI offers.

TDI is committed to offering the highest quality training supported by the latest materials with the most up to date information and techniques.  TDI’s materials are written by authors that acutely conduct the type of diving they are writing about.  Those same materials are updated as technology and equipment change.

 TDI Course Options

TDI is the leader in technical diving and has been since 1994. TDI offers a wide choice of programs available to continue your technical training.

 TDI Diver Level Courses

 Technical Divemaster

The TDI Divemaster Course is the first professional level certification in the TDI Leadership levels. During this course you will be challenged and learn what it is like to work with divers as they begin or continue their technical diving experiences. You will learn how to manage divers, work the dive deck of a boat, and conduct enjoyable dives. Dive physics, physiology, how conduct pre-dive briefing, how to assist technical instructors as well as how to be a professional TDI Divemaster are all part of the course. Your skills will be refined to demonstration quality and your knowledge increased to that of a professional.

Should you decide you want to teach technical diver courses you will need to complete a SDI Open Water Scuba Diving Instructor course; here you will learn more about academic and in-water presentations, conducting courses and diver management. Once you become an open water instructor you can expand your résumé and add the technical areas that interest you to teach.

 TDI Leadership Courses

 TDI Instructor Trainer Course

The Instructor Trainer Workshop is an intensive seven day program that brings you to the highest level of training reached within International Training. You will interact with headquarters staff as well as other industry professional and hear sales and marketing ideas from around the globe. During the course you will get in-depth knowledge of:

  • How and why standards are developed
  • Interaction with SDI Headquarters
  • Evaluation techniques
  • Risk management, the legal side of diving, marketing and budgeting of Instructor level courses, evaluating in water performance of Instructor candidates 

You will also do a minimum of one session of confined water presentations and evaluations, one session of open water presentations and evaluations.  Support materials for the Instructor Trainer include

  • Instructor Trainer manual
  • IT evaluation slates
  • SDI Instructor manual
  • TDI Instructor manual

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  Intro to Tech Diving

The TDI Intro to Tech course is the perfect course for divers who have heard about technical diving and want to find out more about this exciting branch of advanced recreational diving. This course walks students through the special techniques, planning procedures and skills that set technical diving apart from traditional sport diving. It will show them how to improve their dive planning methods, in-water skills and streamline their existing gear configuration, in a non-threatening and fun learning environment. The specific skills this course will highlight are:

  • Advanced Buoyancy Control
  • Gas Management
  • Situational Awareness
  • Trim
  • Gear Configuration and Selection
  • Many More!

TDI’s Intro to Tech course is a useful stand-alone course for the diver who wants to become a more skilled, more proficient diver regardless of if he intends to move on to technical diving. The course may also be used as an introduction to the TDI Advanced Nitrox course and the TDI Decompression Procedures course. And finally, it is also a good refresher for certified technical divers who may want to refresh their skills or have them re-evaluated by a TDI technical instructor.
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 Nitrox Diver

TDI Nitrox course is an entry level course for divers wishing to utilize enriched air nitrox as a breathing gas. Little else has impacted recreational diving more than the introduction of nitrox, allowing more time underwater. During this course, you will learn the benefits, hazards and proper procedures for diving with EAN 22 to EAN 40 your TDI Instructor will also cover

  • Equipment considerations
  • Cylinder labeling
  • Analyzing of Nitrox

The course follows an easy to read and understand diver manual titled Understanding Nitrox and water proof tables for quick on site reference.
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 Advanced Nitrox Diver

The TDI Advanced Nitrox Course qualifies divers to use enriched air nitrox from EAN 21 through EAN 100 within your current certification level to a maximum depth of 40 metres/130 feet during dives hat do not require staged decompression. Often taught in conjunction with the TDI Decompression Procedures course, this can be considered the foundation of your technical diving career. Advanced Nitrox is also a great course for those wanting to extend their bottom times in shallower depths such as scientific diver, and a must for SCR or CCR divers. The course cover topics like

  • Equipment requirements
  • Dive planning
  • Oxygen tracking
  • Blending methods

You will use the TDI Advanced Nitrox Diving manual for your course, which explains in an easy to understand practical manner the complex information that Advanced Nitrox divers need to know.
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 Decompression Procedures Diver

As sport divers planned decompression is not something that we do or have been taught. The TDI Decompression Procedures course prepares you for planned staged decompression diving. With a maximum operating depth of 45m/150 feet, this course is your first step beyond the normal sport diving limits. Your TDI Instructor will provide you with valuable information and skills, among the topics covered are

  • Kit set-up
  • Equipment requirements
  • Decompression techniques
  • Decompression breathing gases
  • Gas management
  • Contingency planning
  • Problem solving procedures

The TDI Decompressions Procedures course combined with the TDI Advanced Nitrox course form the foundation of all other technical courses.  After these two courses and some additional experience, the stage has been set for you to move onto additional technical levels.

Some of the materials you will be using include the TDI Divers Guide to Decompression Procedures, US Navy or Buhlmann Air Decompression Tables (made of vinyl for easy in-water use and storage)
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 Extended Range Diver

Certain areas of the world provide spectacular dives at depths deeper than 39m/130 feet but you will not have access (or very limited access) to helium. The TDI Extended Range course teaches you the proper techniques for utilizing compressed air as a breathing gas and with a maximum depth of 55m/180 feet you won’t have to miss those dives. The Extended Range course will cover topics and skills such as

  • Equipment requirements and configuration
  • Decompression options
  • Use of surface marker buoys
  • Buddy rescue
  • Narcosis checks and management

Materials for this course include the TDI Extended Range Diving Manual and the US Navy or Buhlmann Air Decompression Tables (made of vinyl for easy in-water use and storage)
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 Trimix Diver

As your motivation to explore progresses you will find that you may want to go deeper to dive that wreck that is part of history or that cave system that you have read so much about.  One of the major limiting factors of going deeper is narcosis; TDI’s Trimix Diver course shows how to minimize the effects of narcosis by adding helium to offset the nitrogen in your breathing gas. While taking the Trimix Diver course your TDI Instructor will teach you how to plan and execute dives utilizing as little as 18 percent oxygen and diving to maximum depth of 60 m/200 feet with a blend of helium appropriate for the planned depth. The course covers topics and skills like

  • Dive team planning
  • Gas matching
  • Cylinder labeling
  • Surface marker deployment
  • Equipment configuration
  • Thermal protection options

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 Advanced Trimix Diver

The TDI Advanced Trimix Diver course is the top level of training for open circuit divers wishing to dive to depths as deep as 100 m / 330 feet utilizing hypoxic levels of oxygen (below 17 percent).  This course is perhaps one of the most informative and challenging and upon completion you are among some of the most elite divers. Your TDI Instructor will teach you

  • Equipment management
  • Multiple stage cylinder labeling and placement
  • Complex decompression planning and contingency planning
  • Dive team awareness and communication
  • Gas monitoring and management
  • Use of travel gasses

The TDI Advanced Trimix manual is one of the most up to date manuals and includes all the latest of technology and practices being used.
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 TDI Sidemount Diver

TDI’s Sidemount Diver specialty is the perfect course for any technical diver wishing to use this increasingly popular equipment configuration, either as a ‘stand-alone’ course or in conjunction with one of TDI’s other open circuit specialties.  It teaches students how to safely utilize side-mounted primary cylinders as an alternative to the traditional back-mounted method.  

This course takes students through the specific techniques, planning procedures and skills that set side-mounted cylinder diving apart from the traditional back-mounted method.  During the course, the TDI Instructor takes students on a minimum of three dives and covers skills such as:

  • Equipment considerations
  • Gas management 
  • Attaching cylinders
  • Trim and buoyancy
  • Deployment of surface marker
  • Different water entries

TDI’s Sidemount Diver Specialty is a useful stand-alone course for the technical diver who wants to become more skilled and proficient with different gear configurations regardless of if he intends to use sidemount all the time.  The course may also be taught in conjunction with any of TDI’s other open circuit specialty courses, on the condition that all prerequisites and standards applicable to both courses are fully met. 

The maximum depth limit of this course must not exceed that of the student’s current certification, unless being taught in conjunction with another TDI course which allows a greater depth.  Prerequisites to enroll on the TDI Sidemount Diver course are: Age 18, SDI Open Water Diver or equivalent. (Otherwise open water diver)
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 Cavern Diver

As the first in a series of overhead courses, the TDI Cavern Course takes a serious look at the skills needed to conduct safe and enjoyable cavern dives. Although the cavern course is conducted in the light zone you will still be in an overhead environment. Your TDI Cavern Instructor we cover topics and skills such as

  • Equipment configuration and preparation
  • Body posture and trim
  • Propulsion techniques
  • Cavern conservation
  • Proper guideline procedures

The TDI Overhead Environment manual will outline the procedures for conducting cavern dives and a great addition to your diving library
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 Intro to Cave Diver

The TDI Introductory Cave Course takes a serious look at the skills needed to conduct safe and enjoyable cave dives. During the cave course your TDI Instructor will teach you the proper techniques for diving in a cave environment while staying on the main line. Your TDI Intro Cave Instructor will cover topics and skills such as

  • Limits based on no decompression
  • Equipment configuration and preparation
  • Body posture and trim
  • Propulsion techniques
  • Cave conservation
  • Proper guideline procedures
  • S drills
  • Hand and light signals

The TDI Overhead Environment manual will outline the procedures for conducting cavern dives and a great addition to your diving library
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 Full Cave Diver

The TDI Cave Course is the highest overhead environment rating offered by TDI. This course is for the serious adventure wanting to explore further into the overhead environment, make jumps off of main lines to adjoining passages. During the cave course your TDI Instructor will teach you the proper techniques for diving in a cave environment while maintaining a constant guideline. Your TDI Cave Instructor will cover topics and skills such as

  • Equipment configuration and preparation
  • Body posture and trim
  • Propulsion techniques
  • Cave conservation
  • Proper guideline procedures
  • Lost line drills
  • buddy emergency procedures
  • S drills
  • Hand and light signals

The TDI Overhead Environment manual will outline the procedures for conducting cavern dives and a great addition to your diving library
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 Advanced Wreck Diver

The TDI Advanced Wreck course is the next step for any diver that has taken a wreck diver course. During this course, your TDI Instructor will teach you the proper techniques for locating and planning a penetration dive. The advanced wreck course is commonly taught with other popular TDI course such as advanced nitrox, decompression procedures, extended range, closed circuit rebreather, and trimix. The course covers topics and skills like

  • Use of guidelines
  • Overhead emergency procedures
  • Redundant equipment requirements
  • Locating and identifying wrecks
  • Hazards of wreck diving
  • Surveying of wrecks

The TDI Advanced Wreck Diving manual covers all the most commonly used wreck diving techniques in cold and warm water. The manual also covers team diving techniques and preservation of wrecks.
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 Cave DPV Diver

This course is designed to give the trained cave diver the minimum knowledge and basic fundamentals of safely utilizing diver propulsion vehicle (DPV) in the underwater cave environment. Safe techniques, procedures and skill perfection associated with the use of DPV’s in cave diving is emphasized. Cave conservation considerations, such as low-impact application, are stressed.

  • Equipment Considerations
  • DPV Emergency Towing
  • DPV Techniques Suitable for the Cave Environment
  • DPV Maintenance
  • Proper Use of a DPV

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 Stage Cave Diver

The Stage Cave Diver course is designed to give the trained cave diver the increased knowledge and basic fundamentals in extended bottom times and increased penetration with the use of a stage cylinder. Lengthened bottom times, accumulative decompression obligations and complex dive planning are covered in this course. Safe techniques, procedures and skill perfection associated with stage cave diving is emphasized.

  • Equipment Considerations
  • Cave Environment/Conservation
  • Stage Diving Techniques Suitable for the Cave Environment
  • Problem Solving when Stage Cave Diving
  • Proper Use of a Guideline and Reels

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 Cave Surveying Diver

The Underwater Cave Surveying course is designed to give the trained cave diver the minimum knowledge and basic fundamentals of how to survey in the unique underwater cave environment. The intention of this program is to encourage a standardization of cave surveying on all projects; encourage the use of cave maps in dive planning while increasing the diver’s awareness and knowledge of the surroundings in this environment. Safe techniques, procedures and skill perfection associated with surveying in cave diving is emphasized.  Training includes:

  • Gas Matching Procedures and Management
  • Body Position and Control
  • Survey Techniques
  • Cartography
  • Equipment Check and S-drill
  • Demonstrate use of Guidelines and Reels

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 Semi-Closed Rebreather Diver (Dolphin, Ray, Submatix ST100, Azmuth)

The TDI Semi-Closed Circuit Rebreather course is the ideal course for photographers, cold water divers or anybody wishing to enjoy a quieter dive and closer interaction with marine life. The course is unit specific covering the Dolphin, Ray, Submatix ST100 and the Azimuth. The SCR course topics and skills include

  • System mechanics
  • Nitrox review
  • Gas physiology
  • Bailout scenarios
  • Pre and post dive system checks

The TDI Introduction to Semi-Closed Circuit Rebreathers manual takes you through a step by step process of the history and theory of SCR’s, how the units work, and provides setup and cleaning check lists. Your Instructor may also use the Nitrox & Rebreather Equation software which helps calculate inspired gas and MOD.
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 Air Diluent CCR Diver Course (Closed Circuit Rebreather)

Unit Specific for Inspiration/Evolution, KISS, Optima, Megaladon, Sentinel, PRISM, rEvo, Pelegian and Titan.The TDI Air Diluent Closed Circuit Diver Course (certification depends on unit/electronics used) is your first step into closed circuit rebreather diving (CCR Diving) and your first truly quiet diving experience. Using the latest in technology CCR’s maximize your gas supply of Nitrox and provide the optimum breathing gas for any depth by maintaining a constant partial pressure of oxygen (PPO2). During the dives (minimum of seven) your TDI Instructor will teach you all the necessary skills to conduct CCR dives to a maximum depth of 30 m/100 feet. The skills for this CCR Diving Course include:

  • Setup and maintenance of the unit
  • Loop volume management
  • Calibration of electronics
  • Emergency procedures
  • Buoyancy control
  • CNS tracking

The individual TDI CCR manuals provide comprehensive information about the units and how they operate during a dive.
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 Air Diluent Closed Circuit Rebreather Decompression Procedures Diver Course

Unit Specific for Inspiration, Evolution, KISS, Optima, Megalodon, Titan, Ourboros, Sentinel, Pelegian and rEvo

The TDI Air Diluent Closed Circuit Decompression Procedures Diver Course (certification depends on unit used during training) is the second level certification course for divers wishing to utilize a closed circuit rebreather (CCR) for air diving. The objective of the course is to train divers in the benefits, hazards and proper procedures for diving a CCR and to develop basic CCR diving skills to a maximum depth of 45 metres / 150 feet using an air diluent for formal decompression diving.

  • Setup and maintenance of the unit
  • Loop volume management
  • Calibration of electronics
  • Emergency procedures
  • Buoyancy control
  • CNS tracking

The individual TDI CCR manuals provide comprehensive information about the units and how they operate during a dive.
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 Mixed Gas Closed Circuit Rebreather Diver Course

Unit Specific for Inspiration/Evolution, KISS, Optima, Megalondon, rEvo, Pelegina and Titian
The TDI Mixed Gas course (certification depends on unit/electronice used) is your next step into closed circuit rebreather diving and with the addition of helium as a diluent gas, it is your opportunity to explore a little deeper. Using the lastest in technology CCR’s maximize your gas supply and provide the optimum breathing gas for any depth by maintaining a constant partial pressure of oxygen(PPO2). During the dives (minimum of 6) your TDI Instructor will teach you all the necessary skills to conduct CCR dives utilizing helium as a diluent gas and oxygen levels as low as 16 percent to a maximum depth of 60 m/200 feet. The skills include:

  • Calculating off-board gas requirements
  • Recovering from system failure
  • Calibration of electronics
  • Emergency procedures
  • Removing and replacing off-board gases
  • Surface marker buoy deployment

The individual TDI manuals provide comprehensive information about the unites and how they operate during a dive, this combined with the TDI Trimix Diver manual complete the academic knowledge needed to conduct mixed gas CCR.
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 Advanced Mix Gas Closed Circuit Rebreather Diver Course

Unit Specific for Inspiration/Evolution, KISS, Optima, Megalondon, rEvo, Pelegina and Titian
The highest level of CCR training that TDI offers, the Advanced Mixed Gas course will teach you to use the full capabilities of a CCR. With a maximum depth of 100 m/330 feet this course opens up new wrecks, caves and walls to explore. This intensive course conducted over seven days will focus on all the elements needed to plan and execute dives to these depths. Topics and skills for this course include:

  • Off board gas calculations and management
  • Gas shutdowns and loss of gas drills
  • Equivalent narcotic depth calculation
  • Recovering from system failure
  • Labeling and placing of off board gases

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 Nitrox Gas Blender

In the TDI Gas Blender Course, you will receive a foundation of skills and knowledge that is needed to blend enriched air nitrox for recreational divers. After covering academic subjects including

  • Responsibilities of the gas blender
  • Oxygen handling
  • Gas production equipment and oxygen analyzing

You will demonstrate proficiency in blending enriched air nitrox and the proper labeling of nitrox cylinders.

The TDI Nitrox Gas Blender manual will take you through the processes of blending nitrox in an easy to read and understand format. Additional support materials include the SDI/TDI Gas Blending Log.
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 Advanced Gas Blender

Building upon the TDI Gas Blender Course, the next step is taken in the TDI Advanced Gas Blender Course where you will develop and master the skills and knowledge needed to produce custom mix gases for technical diving that include helium. After a review of academic subjects such as

  • Formulas
  • Gas analysis
  • Blending equipment
  • Blending systems
  • Oxygen handling

The TDI Advanced Gas Blender manual will build your academic knowledge and act as a great resource manual for future reference. Also available is the SDI/TDI Gas Blending Log.
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 O2 Service Technician

In the TDI O2 Equipment Service Technician Course, you will expand upon the repair skills you have received from equipment manufacturer’s programs and learn the proper techniques and protocols of preparing scuba equipment for use with breathing gases other than air. The course covers topics such as

  • Oxygen compatible system components
  • Cleaning chemicals
  • Oxygen cleaning of cylinders valves and regulators

The TDI Equipment Service Technician manual brings you through the process in a logical manner while your instructor takes you through the practical exercises, the manual also acts as great reference material.
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 TDI Leadership Courses

 Intro to Tech Instructor

The TDI Intro to Tech Instructor course provides the training required to competently and safely introduce students to the world of technical diving. The objective of this course is to train instructors to familiarize students with technical equipment configurations, to enhance open water diving skills (such as buoyancy, trim, and situational awareness), and to introduce advanced gas planning techniques within a no-decompression context. Although taught in conjunction with material from the TDI Advanced Nitrox and Decompression Procedures courses, this course is strictly a no-decompression course; students are permitted to use enriched air nitrox mixes, provided the gas mix is within their current level of certification.

Subject areas include:

  • Formula work
  • Equipment Considerations
  • Dive Planning
  • Fixed or Drifting Decompression Methods

Upon successful completion of the course, graduates may teach diving activities in a technical equipment configuration provided:

  1. The diving activities approximate those of training
  2. The areas of activities and environmental conditions approximate those of training

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 Nitrox Instructor

TDI Nitrox Instructor is an entry level course for instructors wishing to teach enriched air nitrox as a breathing gas. Little else has impacted recreational diving more than the introduction of nitrox, allowing more time underwater. During this course, instructors learn the benefits, hazards and proper procedures for teaching EAN 22 to EAN 40.

The TDI Nitrox Instructor kit include

  • Nitrox instructor guide
  • Nitrox PowerPoint®
  • EAD table
  • TDI student record folder
  • logo sticker
  • TDI Nitrox manual
  • Presentation bag
  • TDI temporary card

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 Advanced Nitrox Instructor

The TDI Advanced Nitrox Instructor Course qualifies Nitrox Instructors to teach the use of enriched air nitrox from EAN 21 through EAN 100 to a depth of 40 metres/130 feet during dives that do not require staged decompression. Often taught in conjunction with the TDI Decompression Procedures Instructor course, this can be considered the first step to beginning your technical diving teaching career.

The TDI Advanced Nitrox Instructor kit includes

  • Advanced Nitrox instructor guide
  • Advanced Nitrox PowerPoint®
  • EAD table
  • TDI student record folder
  • logo sticker
  • TDI Advanced Nitrox manual
  • TDI presentation bag
  • TDI temporary card

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 Decompression Procedures Instructor

The TDI Decompression Procedures Instructor course prepares the Advanced Nitrox Instructor to teach the theory, methods and procedures of planned staged decompression diving. While this course is taught in conjunction with TDI Advanced Nitrox Instructor Course, it also can be paired with TDI Advanced Wreck Instructor as well as TDI

The TDI Decompression Procedures Instructor kit includes

  • Decompression Procedures instructor guide
  • Decompression Procedures PowerPoint®
  • EAD table, TDI student record folder
  • Logo sticker
  • TDI Decompression Procedures manual
  • TDI presentation bag
  • TDI temporary card

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 Extended Range Instructor

In the TDI Extended Range Instructor Course, the instructor candidate will receive training in the proper techniques, equipment requirements and hazards of extended range diving to depths of up to 55 metres/180 feet, while utilizing nitrox mixtures and oxygen for staged decompression. Topics that candidates may be asked to present include:

  • Kit set-up
  • Equipment requirements
  • Decompression techniques
  • Decompression breathing gases
  • Lift bag / DSMB deployment
  • Decompression tables

The TDI Extended Range Instructor materials includes

  • Extended Range/Trimix instructor guide
  • Extended Range/Trimix PowerPoint®
  • EAD table
  • TDI student record folder
  • Logo sticker
  • TDI Extended Range/Trimix manual
  • TDI presentation bag
  • TDI temporary card

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 Trimix Instructor Course

While using helium-based breathing gases, the TDI Trimix Instructor Course delivers the training required to teach trimix diving that requires staged decompression. Utilizing gases containing no less than 18% oxygen, candidates will complete the four required dives up to 60 metres/200 feet. Topics that candidates may be asked to present include:

  • Hypoxia
  • Nitrogen narcosis
  • Helium absorption and elimination
  • Counter diffusion
  • Dive planning
  • Gas switching procedures

The TDI Trimix Instructor materials includes

  • Extended Range/Trimix instructor guide
  • Extended Range/Trimix PowerPoint®
  • EAD table
  • TDI student record folder
  • Logo sticker
  • TDI Extended Range/Trimix manual
  • TDI presentation bag
  • TDI temporary card

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 Advanced Trimix Instructor

Allowing dives to a maximum of 100 metres/330 feet and utilizing custom helium, nitrogen and oxygen mixes, the TDI Advanced Trimix Instructor Course is the crowning achievement for technical instructors. During the course, the instructor candidate studies a well-rounded curriculum and completes four training dives to demonstrate mastery of advanced trimix skills. Topics that candidates may be asked to present include:

  • HPNS
  • Use of travel gasses
  • Hypoxia
  • Equipment considerations
  • Dive planning
  • Omitted decompression
  • Oxygen toxicity

The TDI Advanced Trimix Instructor materials includes

  • Advanced Trimix instructor guide
  • Advanced Trimix PowerPoint®
  • TDI student record folder
  • Logo sticker
  • TDI Extended Range/Trimix manual
  • TDI presentation bag
  • TDI temporary card

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 Cavern Instructor

As the first in a series of overhead courses, the TDI Cavern Diving Instructor Evaluation Course takes a serious look at the professionalism and skills of the candidates. Instructor candidates are evaluated for their level of knowledge and proficiency in presenting a TDI Cavern course as well as their proficiency in demonstrating land and water skills.

While keeping a close eye on the overall attitude towards safety, the evaluator also considers the candidate’s ability to develop skilled, efficient and well educated divers that are aware of the environmental impact that divers may have in cavern systems.
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 Intro Cave Instructor

Going beyond the light zone and building upon the values found in the TDI Cavern Instructor Evaluation, the TDI Introduction to Cave Diving Instructor Evaluation (commonly referred to as “Intro”), Intro Instructor candidates will have taught three cavern courses and assisted with at least one Intro to Cave course by this point. Having been recommended by a TDI Cave Instructor for this evaluation, the candidate will demonstrate the ability to educate overhead students in cave etiquette, communications and cave diving skills in an academic setting.

Moving on, the candidate will demonstrate their proficiency in teaching in-water skills such as buoyancy control, S-drills, emergency procedures and lost diver drills to name a few.
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 Full Cave Instructor

Far and above, the TDI Cave Diving Instructor rating is an outstanding accomplishment few can claim. Arriving at Cave Diving Instructor Evaluation, the candidate has conducted at least three Intro to Cave Diving courses as well as having assisted in at least one Cave Diver Course. Following the format as Cavern and Intro, the candidate, having been recommended a TDI Cave Instructor, will demonstrate many of the Intro skills as well as now adding academic subjects such as gas matching procedures for example. Additional in-water skills include air sharing through restrictions, lights out drills and traverses, gaps and circuits.
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 Advanced Wreck Instructor

During the TDI Advanced Wreck Instructor Course, the instructor candidate will master techniques of instilling comfort, confidence and discipline in the advanced wreck student as well as equipment configuration, penetration skills, research techniques and sharpening decompression skills.  Candidates will be asked to present topics such as

  • Hazards of wreck diving
  • Line techniques
  • Local regulations
  • Propulsion techniques

The TDI Advanced Wreck Instructor support materials include

  • Advanced Wreck instructor guide
  • Advanced Wreck PowerPoint®
  • TDI student record folder
  • Logo sticker
  • TDI Advanced Wreck manual
  • TDI presentation bag
  • TDI temporary card

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 Cave DPV Instructor

This course is designed to give the trained cave diving instructor the knowledge and basic fundamentals for the teaching of safely utilizing diver propulsion vehicle (DPV) in the underwater cave environment. Safe techniques, procedures and skill perfection associated with the use of DPV’s in cave diving is emphasized. Cave conservation considerations, such as low-impact application, are stressed.

  • Equipment Considerations
  • DPV Emergency Towing
  • DPV Techniques Suitable for the Cave Environment
  • DPV Maintenance
  • Proper Use of a DPV

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 Stage Cave Instructor

The Stage Cave Diving instructor course is designed to give the trained cave diving instructor the increased knowledge and basic fundamentals for teaching  extended bottom times and increased penetration with the use of a stage cylinder. How to teach lengthened bottom times, accumulative decompression obligations and complex dive planning are covered in this course. Conveying safe techniques, procedures and skill perfection associated with stage cave diving is emphasized.

  • Equipment Considerations
  • Cave Environment/Conservation
  • Stage Diving Techniques Suitable for the Cave Environment
  • Problem Solving when Stage Cave Diving
  • Proper Use of a Guideline and Reels

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 Cave Surveying Instructor

The Underwater Cave Surveying course is designed to give the trained cave diving instructor the knowledge and basic fundamentals of how to teach divers in the proper surveying techniques use in the unique underwater cave environment. The intention of this program is for cave surveying instructors to encourage a standardization of cave surveying on all projects; encourage the use of cave maps in dive planning while increasing the diver’s awareness and knowledge of the surroundings in this environment. Safe techniques, procedures and skill perfection associated with surveying in cave diving is emphasized.  Training includes teaching cave divers:

  • Gas Matching Procedures and Management
  • Body Position and Control
  • Survey Techniques
  • Cartography
  • Equipment Check and S-drill
  • Demonstrate use of Guidelines and Reels

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 Semi-Closed Rebreather Instructor (Dolphin, Ray, Submatix ST100, Azmuth)

The TDI Semi-Closed Rebreather Instructor Course, which includes the Drager Dolphin and Ray, Submatix ST100 and the Azimuth, trains instructor candidates to present the benefits, proper procedures, hazards and skills of SCR diving to students. Depending on the specific unit, up to six dives will be completed while accumulating up to 150 minutes of bottom time. Instructor candidates will demonstrate mastery of skills that include proper planning, pre-dive checks, bail-out procedures and PO2 monitoring to name a few.
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 Air Diluent Closed Circuit Rebreather Instructor Course

This is the instructor level certification course for instructors wishing to teach the unit specific closed circuit rebreather course. The objective of this course is to train instructors to teach recreational rebreather diving and to develop basic rebreather diving skills appropriate to diving within the normal recreational depth limits for no decompression diving to 30 metres / 100 feet using oxygen (O2) and an air diluent. This course is manufacturer specific. Units include Inspiration/Evolution, KISS, Optima, Megalodon, rEvo, Ouroboros, Titian, Pelagian and the Sentinel.
Some of the subject areas are:

  • Comparison of Open Circuit, closed circuit and semi-closed circuit units and the benefits and problems with each
  • Emergency Procedures
  • Demonstrate proper cleaning and maintenance of the rebreather
  • Demonstrate proper analysis of all gas mixtures to be used
  • Demonstrate proficiency in teaching the TDI Diving Rebreathers Diver Program
  • Present a minimum of 1 graded presentation on a closed circuit rebreather topic

Upon successful completion of this course, graduates may teach the TDI Closed Circuit Rebreather course not to exceed the manufacturers designed depth maximum of 30 metres/100 feet with air diluent.
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 Basic Closed Circuit Rebreather Decompression Procedures Instructor

This is the instructor level certification course for instructors wishing to teach the unit specific closed circuit rebreather decompression procedures course. The objective of this course is to train instructors to teach recreational rebreather diving and to develop basic rebreather diving skills appropriate for decompression diving to 45 metres / 150 feet using oxygen (O2) and an air diluent. This course is manufacturer specific. Units include Inspiration/Evolution, KISS, Optima, Megalodon, rEvo, Ouroboros, Titian, Pelagian and the Sentinel.
Some of the subject areas are:

  • History and evolution of rebreathers
  • Practical mechanics of the system
  • Emergency procedures
  • Demonstrate the proper procedures for:
  • Buoyancy control
  • ADV use
  • Bail-out

Upon successful completion of this course, graduates may teach the TDI Closed Circuit Rebreather Decompression Procedures course not to exceed the manufacturers designed depth maximum of 45 metres/150 feet with air diluent.
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 Mixed Gas Closed Circuit Rebreather Instructor Course

This is the instructor level certification course for instructors wishing to teach the mixed gas closed circuit rebreather course. The objective of this course is to train instructors to teach mixed gas rebreather diving and to develop technical rebreather diving skills appropriate to diving to a maximum depth of 60 metres / 200 feet or the maximum depth set by the manufacturer of the specific unit, using trimix with 16 percent oxygen (O2) or greater. This course is manufacturer specific. Units include Inspiration/Evolution, KISS, Optima, Megalodon, rEvo, Ouroboros, Titian, Pelagian and the Sentinel.
Some of the subject areas are:

  • Electronic Systems Design and Maintenance
  • Gas Physiology
  • Demonstrate a complete systems check and rebreather configuration
  • Properly execute the break down and maintenance of rebreather

Upon successful completion of this course, graduates may teach the TDI Mixed Gas Closed Circuit Rebreather course not to exceed the manufacturers designed depth maximum of 60 metres / 200 feet with mixed gas diluent.
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 Advanced Mix Gas Closed Circuit Rebreather Instructor Course

This is the instructor level certification course for instructors wishing to teach the mixed gas closed circuit rebreather course. The objective of this course is to train instructors to teach mixed gas rebreather diving and to develop technical rebreather diving skills appropriate to diving to a maximum depth of 100 metres / 330 feet for the maximum depth set by the manufacturer of the specific unit, using custom trimix as a breathing gas. This course is manufacturer specific. Units include Inspiration/Evolution, KISS, Optima, Megalodon, rEvo, Ouroboros, Titian, Pelagian and the Sentinel.
Some of the subject areas are:

  • History and evolution of rebreathers
  • Gas Physiology
  • Emergency procedures
  • Properly execute the planned dive within all pre-determined limits

Upon successful completion of this course, graduates may teach the TDI Advanced Mixed Gas Closed Circuit Rebreather course not to exceed the manufacturers designed depth maximum of 100 metres/330 feet with custom mixed gas as a diluent.
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 Nitrox Gas Blender Instructor

In the TDI Gas Blender Instructor Course, the instructor candidate will receive a foundation of skills and knowledge that is needed to blend enriched air nitrox for recreational divers.

After covering academic subjects including the responsibilities of the gas blender, oxygen handling, gas production equipemt and oxygen analyzing the candidate will demonstrate proficiency in blending enriched air nitrox as well as conducting the TDI Gas Blender course.
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 Advanced Gas Blender Instructor

Building upon the TDI Gas Blender Instructor Course, the next step is taken in the TDI Advanced Gas Blender Instructor Course where the candidate will develop and master the skills and knowledge needed to conduct the TDI Advanced Gas Blender Course to produce custom mix gases for technical diving that include helium. As with all instructor level training, the candidate will demonstrate their ability to conduct this course with proficiency.
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 O2 Service Technician Instructor

In the TDI O2 Equipment Service Technician Instructor Course, participants will expand upon the repair skills they have received from equipment manufacturer’s programs and learn the proper techniques and protocols of preparing scuba equipement for use with breathing gases other than air.
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 Non-Diving Specialty Instructor

The TDI Non-Diving Specialty Instructor course is designed to teach members of the scuba diving industry, such as store owners, service technicians, etc the knowledge to safely function as an independent instructor of the non-diving specialties listed below:

  • Visual Inspection Procedures
  • TDI Nitrox Gas Blender
  • TDI Oxygen (O2) Equipment Service Technician
  • Other non-diving specialties, ie. unique specialties, offered by TDI, subject to TDI Headquarters approval

In order to become an instructor for one of the above courses a candidate must be certified by a qualified instructor trainer, experience based upgrades are not available. Instructors who hold equivalent certifications with another recognized agency, for example gas blender instructors, who wish to cross over as a non-diving specialty instructor may do so by applying via current instructor crossover procedures.

Some subject areas include:

  1. History of TDI
  2. Risk Management
  3. Present academic and practical presentations of the specialty area(s) the instructor will be qualified to teach
  4. Demonstrate the ability to evaluate and remediate the final exam with students

Upon successful completion of this course, graduates may teach the appropriate TDI non-diving specialty. The candidate may be certified to teach multiple specialties at once, provided all corresponding prerequisites and graduation requirements are met and the instructor trainer conducting the courses is qualified at all levels.
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 TDI Instructor Trainer Course

The Instructor Trainer Workshop is an intensive seven day program that brings you to the highest level of training reached within International Training. You will interact with headquarters staff as well as other industry professional and hear sales and marketing ideas from around the globe. During the course you will get in-depth knowledge of:

  • How and why standards are developed
  • Interaction with SDI Headquarters
  • Evaluation techniques
  • Risk management, the legal side of diving, marketing and budgeting of Instructor level courses, evaluating in water performance of Instructor candidates 

You will also do a minimum of one session of confined water presentations and evaluations, one session of open water presentations and evaluations.  Support materials for the Instructor Trainer include

  • Instructor Trainer manual
  • IT evaluation slates
  • SDI Instructor manual
  • TDI Instructor manual

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