This class is structured around 5 days, and involves a minimum of 32 hours of instruction and 8 dives (2 practice dives, 4 critical skills dives and 2 experience dives). This class is designed to provide a working knowledge of Nitrox/Helitrox, oxygen decompression including an understanding of the history and practice of decompression, physics, physiology, tables, minimum deco (within N.D.L.), ratio deco on the fly and other operational considerations including technical gas planning and management (minimum gas, or "Rock Bottom") and contingency procedures. This course is an extended decompression class, divers in this depth range must be aware they will be entering into mandatory extended decompression commitments and should be prepared to do accelerated decompression on the fly after extended bottom times at a max depth of 160' on the experience dives. Decompression will not exceed a single cycle of oxygen.
Upon successful completion of Tech 1, the diver is fully qualified to conduct technical dives to 160' using standard helium gases of 25/25, 21/35, or 18/45 with a single decompression of Nitrox 50% or 100% oxygen, with the option of a bottom stage (if endorsed).
The limits for a UTD / FKD Tech 1 diver are:
Sound like more than you had envisioned? Look at our Techreational class for a smaller size chunk, or email us.
Minimum 18 years of age
Essentials of Tech or equivalent
Minimum 75 dives beyond Open Water certification
Minimum 25 dives beyond Essentials of Tech certification
Maximum depth is 160’. Average depth on non-experience dives is 20 - 30'
All dives are to maintain a working PO2 of no greater than 1.4
Maximum decompression of 1 oxygen cycle when 100% oxygen is used for accelerated decompression
Maximum decompression time of 30 minutes when Nitrox 50% is used for accelerated decompression
Standard gas is Nitrox 32% & standard helium mixes of 25/25, 21/35 and 18/45
Double tank configuration including a 40cft deco bottle of 100% oxygen or 80cuft bottle of Nitrox 50% and 80cuft stage bottle of bottom gas (if endorsed), limited to one single cycle of oxygen per dive
No overhead environments
Instructor to student ratio maximum 6:1 in open water, during land drill, surface exercises and Experience Dives but 3:1 during any direct in-water critical skills training.
Complete the UTD academic materials (online or book)
All UTD classes are non-smoking
The use of prescription drugs must be authorized prior to the onset of diver training by a physician
Must be able to swim a distance of at least 50 feet/15 meters on a breath hold
Must be able to swim at least 300 yards/275 meters in less than 14 minutes without stopping
All participants must tow a diver in full equipment, in the environment they will be diving in at least 400 yards in 16 minutes
All participants must demonstrate a rescue of a diver simulating oxygen toxicity
See our Equipment Requirements Page
We do have equipment available for use. If you have any questions on equipment requirements please contact us prior to registering.
This is a critical skills class. Failures will be introduced by the instructor to facilitate problem identification and resolution and building capacity and bandwidth for more progressively challenging diving.
In this class, students will be trained in the use of double cylinders and the potential failures associated with them, the use of Nitrox 50% and 100% oxygen for accelerated decompression, ratio deco, the use of helium to minimize narcosis and the applications of single decompression stage diving with respect to decompression procedures.
This provides an excellent foundation on which divers can build their technical diving experience.
Technical Diver 1, or “Tech 1”, is the first full technical diving class in the UTD/FKD Technical Diving program. It’s designed to prepare the diver for the rigors of technical diving, introducing the diver to deeper depths (160fsw) with helium based breathing gases (25/25, 21/35 or 18/45) and single bottle stage decompression using one of two decompression gas mixtures (Nitrox 50 or 100% O2). Students also learn how to conduct multiple tech dives in a day.
Tech 1 focuses on, in progression, bottom skills, then ascent skills and mid-water skills, ultimately testing the divers with their ability to identify, manage and resolve failures not only on the bottom, but also during the ascent and critical gas switch, which are essential for safe technical diving.
Tech 1 is taught in double cylinders with backgas of Nitrox 32% or standard gas helium mixes of 25/25, 21/35, or 18/45 with a single decompression bottle of Nitrox 50% or 100% O2 for accelerated "on the fly" decompression. Extensive academic discussions and experience dives will focus on selecting the proper backgas, with equal emphasis on profiles where 100% O2 is the appropriate decompression gas and where Nitrox 50% is the appropriate logistical decompression gas.
The diver will be entering mandatory decompression obligations in this class. This allows the diver to conduct his own technical dives in the 160’ range with a single decompression bottle (a stage bottle endorsement, which allows the student to use a bottom stage to conduct multiple technical dives in a day is available with this class).
Tech 1 expands on the Essentials of Tech skills, and is designed to cultivate, integrate and test these skills, which are essential for safe technical diving, while also adding reel and line work to the diver’s toolbox.
All UTD / FKD classes are video'd for educational review, as we believe this is invaluable for students to visually focus on their individual in-water skills, situational awareness, communication, and team diving. Learning to self evaluate is an important aspect of any class, and video is one of the most important tools we have for instruction.
Our focus is the complete dedication to your diving skills, knowledge & in-water practice. To help prepare for the rigors ahead, please contact us, you can find out more information about the class, the equipment and skills you will be evaluated on.
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