• TDI Deco Procedures

TDI Deco Procedures

Technical Diving · Planned Staged Deco to 150 ft · For Experienced Divers

Dive past the recreational ceiling. Decompression Procedures certifies you to plan and execute staged decompression dives to 150 feet, where you run a planned series of ascent stops instead of surfacing directly. You'll learn to build the ascent, stop depths, times, gases, and contingencies, and to switch between back gas and dedicated deco gases in the water. It's a serious technical certification, and for most divers it's taught together with Advanced Nitrox, the two were designed as a pair. You'll need your own mask, fins, boots, and snorkel; stage cylinders, deco regulators, a BCD, and tanks are available to rent from us or bring your own.

Veterans can put their GI Bill toward their training, and families can use ESA or ClassWallet funds. See if you qualify.

Starting from
$799.00

Availability: In Stock

TDI Decompression Procedures Course

Technical Diving · Planned Staged Deco to 150 ft

Decompression Procedures moves you past the recreational no-decompression ceiling. You'll plan and run staged decompression dives to 150 feet, working planned ascent stops, then prove it on open water dives with real decompression objectives. Pairs with Advanced Nitrox, which supplies the high-oxygen gases that make it possible.

What it unlocks

  • Plan and execute staged decompression dives to a maximum depth of 150 ft / 45 m
  • Build a full decompression plan: stop depths, stop times, ascent gas, gas selection
  • Carry a contingency plan for omitted decompression
  • Qualify to move on to Extended Range, Advanced Wreck, and Trimix training

What you'll learn

  • Decompression dive planning: stop depths, stop times, ascent gas
  • Gas selection and contingency planning for omitted decompression
  • Equipment selection, cylinder labeling, gas analysis

In-water skills

  • Gas switches at depth between back gas and deco gases
  • SMB deployment, trim, and buoyancy while holding a stop
  • Responding to an equipment failure or omitted decompression

Designed to pair with Advanced Nitrox

Advanced Nitrox supplies the high-oxygen deco gases this course teaches you to plan and switch to. Most divers take the two together — ask us about the combined program.

Who can enroll

Where it leads

  • TDI Extended Range and Advanced Wreck
  • TDI Trimix, for depths beyond air and nitrox
  • Pairs naturally with Sidemount

✓ What's included

  • Instruction and your open water technical training dives
  • TDI Decompression Procedures knowledge materials
  • Rental gear available: stage cylinders, deco regs, BCDs, tanks
  • Your TDI certification on completion

What to bring

  • Your own mask, fins, boots, snorkel (required)
  • Stage cylinders, deco regs, BCD, tanks (rentable)
  • Advanced Adventure/Diver card and dive log proof
  • A swimsuit and a towel

Frequently Asked Questions

What does this course certify me to do?
Plan and execute staged decompression dives to 150 feet, running planned ascent stops instead of surfacing directly.
Should I take this with Advanced Nitrox?
Most divers do — it supplies the deco gases you'll learn to use. Call us to set up the combined program.
What are the prerequisites?
Certified SDI Advanced Adventure or Advanced Diver (or equivalent), 25 logged dives, minimum age 18.
How deep do these dives go?
Staged decompression dives here go to a maximum depth of 150 feet.
What gear do I need?
Your own mask, fins, boots, snorkel, plus stage cylinders, deco regs, a BCD, and tanks — all rentable.
What comes after this course?
TDI Extended Range, Advanced Wreck, and Trimix — the deeper technical track.

Let's. Go. Diving.

Ready to plan your first staged decompression dive? Call the shop and we'll map it out.

Call the shop (480) 881-4013

A technical certification for staged decompression diving to 150 feet. Prerequisites: certified SDI Advanced Adventure or Advanced Diver (or equivalent), 25 logged dives, minimum age 18.

By booking, you agree to our Terms & Conditions.

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