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  • Master Diver/Rec 3

Master Diver/Rec 3

UTD's Recreational Diver 3 class is a Non-Decompression (NDL) Helitrox course structured to prepare divers for deeper recreational diving using proper equipment, diving techniques, and standard Helium breathing mixtures.

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UTD Rec 3/Master Diver

Recreational Diver 3 training continues the Essentials of Rec / Essentials of Tech and the Recreational 2 or equivalent skills and is designed to cultivate, integrate and expand those skills required for safe deeper recreational diving.

The class will incorporate more advanced decompression theories and the use of correct ascent procedures along with problem identification/resolution while building the capacity for progressively more challenging diving. In this class, students will be trained in: (a) the use of single or double tanks/cylinders and in the potential failure problems associated with them; (b) the use of Nitrox and Helitrox for extended bottom times; and (c) the use of Helium to minimize narcosis, CO2, gas density and post-dive “nitrogen stress.”

The UTD Recreational 3 course is normally conducted over a 3-4 day period, and cumulatively involves a minimum of 30 hours of instruction including academics, pool/confined water, and open water dives to 130’/39m using Helitrox 25/25 as a breathing gas. The final dives are “experience dives,” where you will use your new skills while being “shadowed” by your instructor.

This is an NDL/min deco class preparing a diver for depths to 130’/39m without accelerated decompression procedures.


  • Minimum 18 years of age
  • UTD Rec 2, or Essentials of Rec and Nitrox, or equivalent
  • Minimum of 50 dives beyond open water certification, 25 of which must be non-training dives

Course limits

  • Maximum depth 130’/39m
  • Standard gases are Nitrox 32 and Helitrox 25/25
  • No stage decompression
  • No overhead environments

Learning Materials NOT included.

Class times on the website do NOT reflect availability. Please call to schedule your class.


Skill Level: Intermediate
Skill Details: Intermediate - Advanced

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