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. The TDI Intro to Tech course may be combined with TDI Advanced Nitrox at the discretion of the instructor.

Student Prerequisites

  • Minimum age 18, 15 with parental consent
  • Minimum certification an SDI Open Water Scuba Diver or equivalent
  • Provide proof of 25 logged open water dives

Course Structure

  • A minimum of 3 dives must be conducted; All dives must be conducted at depths within the diver’s current level of certification but no dives should exceed 23 metres / 75 feet
  • If the TDI Intro to Tech is taught in conjunction with Advanced Nitrox, only a total of 4 dives are required; more may be conducted at the discretion of the instructor
  • TDI allows instructors to structure courses according to the number of students participating and their skill level


  • The minimum number of classroom and briefing hours is 6

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