Technical Diving International TDI
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 an innovator of new diving techniques and programs which previously were not available to the 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
The TDI Intro to Tech course introduces students to the world of technical diving. This course is designed
as an introductory course to the TDI Advanced Nitrox course and
the TDI Decompression Procedures Course. The
objective of this course is to
familiarize students with Technical
equipment configurations, to enhance open water
diving skills (such as buoyancy, trim, and situational awareness), and to introduce students to advanced gas planning
techniques within a no-decompression context. This course is strictly a no-decompression course; students are
permitted to use enriched air nitrox (EAN) mixes, provided the
gas mix is within their current level of certification.
Intro to Tech may be combined with
TDI Advanced Nitrox at the discretion of the instructor.
What you can expect to learn:
- In-depth dive planning, advanced buoyancy control, gas management, situational awareness, proper trim, gear configuration and selection
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 what equipment needs to be O2 cleaned and tank analyzation. +$Book
Are you looking to expand your dive time? Maybe you’re a scientific diver or photographer looking to stay in the water a little longer?
The TDI Advanced Nitrox Course qualifies divers to use enriched air nitrox from EAN 21 through EAN 100 percent within your current certification level to a maximum depth of 40 meters/130 feet during dives that 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. TDI Advanced Nitrox is also a must for SCR or CCR divers.
What you can expect to learn:
Advanced Nitrox picks up where TDI Nitrox leaves off and offers a more in-depth look at diving with nitrox including:
- Physics and physiology relating to diving with gas mixes containing more than 40% oxygen
- Gas planning, dive tables, dive computers, oxygen limitations, nitrogen limitations
- Equipment considerations, cylinder labeling, analyzing nitrox mixtures, gas blending procedures, and oxygen service ratings for using gases with more than 40% oxygen
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 The TDI Decompression 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. in addition to the course fee you will be use the TDI Divers Guide to Decompression Procedures $39.95, US Navy or Buhlmann Air Decompression Tables (made of vinyl for easy in-water use and storage)(Optional Purchase $12.95) There is also an (optional) online class available that can replace the book work and knowledge review $129.95. You will still have to come to classroom If the online format is chosen. Dives accompanying the course will also be mandatory and subject to fees depending on location and/or boat charter fees. This class typically starts in the spring to ensure all training can be completed in one season while staying here in New England. No matter what time of year we can accommodate schedules with customized classroom dates. Please call for details.
Advanced Wreck Diver
The TDI Advanced Wreck Diver Course is the next step for any diver that has successfully completed the SDI Wreck Diver Course. During this course, your TDI Instructor will teach you the proper techniques for locating and planning an advanced penetration dive. The advanced wreck course is commonly taught with other popular TDI courses such as Advanced Nitrox, Decompression Procedures, Extended Range, Closed Circuit Rebreather, and Trimix
What you can expect to learn:
- Use of advanced wreck diving equipment including:
- Primary cylinder(s)-dual outlet single tank, independent doubles, or doubles with isolation manifold
- Decompression/stage cylinders
- Redundant primary regulators
- Primary and back-up lighting systems
- Penetration/safety reels
- Lift bag/SMBs
- Wreck penetration procedures
- Equipment selection
- Pre-dive checks and drills
- Stress analysis and mitigation
- Guideline use, deployment, following, retrieval
- Team awareness and communication
- Emergency procedures (equipment failures, catastrophic gas loss, omitted decompression, navigational errors, entrapment/entanglement, loss of visibility, injured/unconscious diver, etc)
- SMB/lift bag deployment
- Proper trim, buoyancy and propulsion techniques
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 In addition to the course fee you will use the TDI Trimix Diving manual for your course $39.95, which explains in an easy to understand practical manner the complex information that trimix divers need to know. Dives accompanying the course will be mandatory and subject to fees depending on location and/or boat charter fees. This class typically starts in the spring to ensure all training can be completed in one season while diving here in New England. No matter what time of year we can accommodate schedules with customized classroom dates. Please call for details.
(Closed Circuit Rebreather)
Call for pricingThe TDI Closed Circuit Rebreather (CCR) Air Diluent Diver Course is your first step into closed circuit rebreather diving and your first truly quiet dive experience!
Using the latest technology in CCRs can maximize your gas supply and provide an optimum breathing gas for any depth by maintaining a constant partial pressure of oxygen. It’s like having a nitrox blending machine on your back!
During this course, your TDI Instructor will teach you all of the necessary skills to conduct no decompression CCR dives to a maximum depth of 30 metres/100 feet using air diluent.
Who this course is for:
The certified diver looking to advance their diver level training and equipment configurations by learning to dive a rebreather. Whether you are an avid photographer, want to experience the silence of diving a rebreather, or looking to get closer to the marine life – rebreather diving is for you.
The Prism 2 is a fully closed circuit Rebreather, ideal for exploring open ocean, cave, or wrecks. This unit can be electronically or manually controlled which means you choose how you want the loop PPo2 maintained.
Includes shoulder mounted counter lungs and rear mounted radial scrubber which provide easy breathing with low resistive effort and low hydrostatic loading. The Prism 2 has also been tested by ANSTI at 100M and has the lowest WOB of any mixed gas CCR on the market at 0.94 J/L.
The standard kit includes an electronic secondary control and primary LED displays with a backplate/wing assembly that provides a complete kit ready to dive out of the box. Unit can also be purchased with or without tanks/valves.
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.
Advanced Nitrox Blender
After successful completion of the TDI Advanced Gas Blender course, you will be able to engage in the blending of oxygen and helium based gases. The objective of this course is to train candidates in the proper procedures needed for the preparation and blending of high quality nitrox and trimix gases for use in technical diving. The TDI Advanced Gas Blender course will take you through this process in an easy-to-understand format.
Semi Closed Rebreather
Price of training included with purchase.
This is the entry-level certification course for recreational divers wishing to utilize a TDI approved semi-closed circuit rebreather (SCR). The objective of this course is to train sport divers in the benefits, hazards and proper procedures for using a SCR.
The Hollis Explorer is a true recreational Rebreather. The Explorer is neither a fully closed circuit Rebreather nor a pure semi-closed system, but an intelligent hybrid that utilizes the best of both worlds. Its compact, lightweight and extremely easy to use.
The Explorer's patent pending design is unique in using a single gas; Nitrox, and is electronically controlled to achieve an optimal balance of PPO2 and dive time. Refillable absorbent cartridges, easy guided setup with go or no go, optional CO2 tracking, and 2 hour duration make this a dream for any recreational diver.
The Explorer diver will benefit from breathing warm gas, have lots of bottom time, and since it does not produce any invasive bubbles, see more sea life than ever before.