TDI Intro to Tech Course

Technical diving and recreational diving use the same basic equipment and the same fundamental skills. What changes is the precision required of both. Trim matters more. Gas management follows stricter protocols. Gear is configured to a higher standard of streamlining and redundancy. Dive planning accounts for contingencies that recreational planning does not address.

The TDI Intro to Tech course is where recreational divers get their first real look at what that world involves. It is not a certification course -- you do not leave with a technical diving rating. What you leave with is a serious upgrade to your foundational skills and a clear picture of whether the technical track is where you want to go next. For certified technical divers, it also works as a focused refresher on the core skills the entire tech path is built on.

Who This Course Is For

The TDI Intro to Tech course is designed for three types of divers.

• Recreational divers who are curious about technical diving and want to understand what it actually involves before committing to the full track
• Recreational divers who have decided to pursue technical training and want to build the foundational skills before their first TDI course
• Certified technical divers who want a focused refresher on trim, gas management, and core tech skills

What the Course Covers

Advanced Buoyancy Control and Trim

Trim in technical diving refers to your horizontal body position in the water. A diver in good trim is parallel to the bottom, with no part of their body or gear dragging or sinking. It reduces drag, improves gas efficiency, and prevents silting up in environments where disturbing the bottom can destroy visibility instantly. The course builds trim to a more precise standard than recreational diving requires, and works through the finning techniques and body positioning that maintain it.

Gas Management

Recreational gas management is typically straightforward: turn the dive at half a tank and surface with a reserve. Technical gas management is more deliberate. The course covers planning gas consumption for a dive, matching gas with your buddy so your team can support each other, and the S.T.A.R.T. pre-dive system that technical divers use to verify gear, gas, and team readiness before every descent. These protocols exist because technical diving leaves less room for improvisation when something goes wrong.

Gear Configuration and Selection

Technical gear is configured differently than recreational gear. Regulators are positioned for specific access. Hose routing is standardized. Equipment is streamlined to reduce snag points and drag. The course covers the principles behind technical gear configuration, how to evaluate and set up your own equipment for tech diving, and what gear selection looks like as you move further into the technical track.

In-Depth Dive Planning and Situational Awareness

Technical dive planning is more detailed than recreational planning because the consequences of a planning gap are more serious. The course covers how to plan a technical dive from gas requirements through contingency procedures, and how to maintain situational awareness throughout a dive so that small problems are caught before they become large ones.

Skills You Will Demonstrate

Completion of the TDI Intro to Tech course requires demonstrating the following:

• Proper gear selection, preparation, and buddy gas matching before the dive
• Mastery of S.T.A.R.T. procedures, trim, finning techniques, body positioning, and core diver skills
• Mature, sound judgment in dive planning and execution throughout the course

Who Can Enroll

The TDI Intro to Tech course is open to certified SDI Open Water Scuba Divers or equivalent. Additional requirements:

• Minimum age 15 with parental consent, 18 without
• Proof of 25 logged open water dives

Where This Course Leads

The TDI Intro to Tech course is the natural entry point for divers considering TDI's technical certification track. If you decide to continue, the skills and standards built in this course carry directly into TDI's entry-level technical programs. Call us at (480) 881-4013 and we can walk you through what the full tech path looks like from where you are right now.

Gear and Equipment

Students are required to own their own mask, fins, boots, and snorkel for this course. Technical diving gear rental, including BCD, regulator, and tanks, is available through Dive Arizona for this course. That said, technical gear configuration is highly personal and specific to your body and goals. Divers who own their own technical setup get significantly more out of the course because they are training on the equipment they will actually dive. If you are considering purchasing technical gear before or after the course, stop by the shop and we will walk you through the options. All students enrolled in a course receive a discount on purchases during enrollment.

Frequently Asked Questions

What is the TDI Intro to Tech course?

The TDI Intro to Tech course is an introductory program that bridges recreational and technical diving. It covers trim, advanced buoyancy control, gas management protocols, gear configuration, situational awareness, and in-depth dive planning. No technical certification is issued after this course, it is designed to build foundational skills and give divers an honest look at what technical diving involves before committing to the full training path.

What is the difference between recreational and technical diving?

Recreational diving has defined depth limits, requires no decompression stops, and is conducted with a single tank on the back. Technical diving may involve greater depths, planned decompression, multiple gas sources, and more complex gear configurations. The skills, planning, and margin for error are all different. The Intro to Tech course covers what those differences look like in practice.

What is proper trim in scuba diving?

Trim is your body position in the water. Good trim means you are horizontal and parallel to the bottom, with no part of your body or gear angled down or dragging. It reduces drag, improves gas efficiency, and prevents disturbing the bottom, which matters especially in technical environments where silting out can eliminate visibility instantly. The Intro to Tech course builds trim to a more precise standard than recreational training typically covers.

How is gas management different in technical diving?

Technical gas management involves planning gas consumption in detail before the dive, matching gas with your buddy so your team can support each other, and using structured protocols like the S.T.A.R.T. system to verify readiness before every descent. The margins are tighter than recreational diving because the consequences of running low on gas in a technical environment are more serious.

Do I need special gear for the Intro to Tech course?

Technical diving gear, including the BCD configuration, regulator setup, and tank options, is different from standard recreational gear. Rental gear is available through Dive Arizona for this course. However, since technical gear is highly personal and specific to your setup, divers who train on their own equipment get more out of the course. If you want to talk through gear options before enrolling, call us at (480) 881-4013 or stop by the shop.

Does the Intro to Tech course lead to a certification?

No. The TDI Intro to Tech course does not issue a technical diving certification. It is a skills-building and exploratory course designed to prepare recreational divers for the technical training track and give them a realistic picture of what that path involves. If you decide to continue, the foundational skills from this course carry directly into TDI's entry-level technical programs.

Ready to See What Technical Diving Is About?

Contact us to schedule the TDI Intro to Tech course. Call us at (480) 881-4013 or stop by the shop. We are open Monday through Saturday 11am to 6pm and Sunday 11am to 5pm, at 18618 S 186th Way, Queen Creek, inside The Shooting Range.

For more information and to see course standards, click here!