03 / 09 · TDI & PSAI Catalogue
TDI · First staged deco
Decompression Procedures.
Past the no-deco line. Planned staged decompression on twinset or sidemount — the gate course.
What this
course is.
The gate. Every diver who calls themselves technical has been through this course. You plan deco, execute deco, manage stops with redundancy and respond to gas problems that you previously had the surface to bail out to. After this course, your dives no longer end when the no-deco timer does.
Who this
course is for.
- Divers with Adv Nitrox and a twinset ready to go beyond no-deco.
- Wreck and cave students needing a strong deco foundation.
- Recreational divers wanting to dive the deep Murcia wrecks safely.
Ref
Skill
What it means
01
Deco theory & tables
Bühlmann ZH-L16, gradient factors — the maths under the computer.
02
Stop discipline
Hold the stop. Trim. Buoyancy. Gas. Time. In that order.
03
Decompression gas
EAN 50 as deco gas. Stowage, deployment, switch protocol.
04
Computer + table redundancy
Two computers or one + table. Never one source of truth.
05
Lost-deco-gas contingency
Air-only ascent profiles. Calling the dive.
06
Wreck conditioning
In-water task loading on the Cabo de Palos wrecks.
3–4D
DurationIn-water + theory6
Training divesIncluding assessment45M
Max depthWithin cert limits1:2
Student ratioPer instructor€400
Course priceExcl. cert & gasBefore
you book.
- TDI Advanced Nitrox
- 50 logged dives
- Twinset or sidemount kit
- Intro to Tech recommended
In the
course price.
- Six in-water training dives
- Theory sessions
- Course manual
- Twinset & stage rental if required
Plan
for these.
- Certification fee
- Gas at cost
- Boat fees for deep dives
- Insurance
Next
Extended Range · 55 m
Past 45 m to 55 m with up to two stages. The depth gate to trimix.
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Sideways
Cavern Diver
First overhead environment, within the natural light zone.
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Bundle
Adv Nitrox + Deco
You may want the combined course for the discount.
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Start the
conversation.
A short message with your goals and certification history. No forms, no funnels — you talk to the instructor.