A technical diver handling decompression stage cylinders during a dive

Photo by Teemu Virtanen · CC BY-SA 3.0

OC Tech (50m)RAID

Advanced Decompression

Official course standards ↗Last updated September 7, 2026

A technical course for experienced RAID divers preparing for deeper and more complex diving challenges using staged decompression. Students learn extended bottom times, multi-gas decompression strategies, and advanced breathing gas mixing for mixed-depth profiles. The course is available in two options: 50 metres with air and nitrox, or 50 metres with air, nitrox, and trimix gas blends. This course bridges standard technical diving and extended depth exploration, teaching the gas management and decompression planning skills necessary for deep wreck diving, technical cave systems, and staged decompression in open water.

Centres that teach this course

2 dive centres in the directory publish a price for this exact certification, checked Sep 2026. Each centre's own wording is shown beneath its name. Ranges cover whole-course prices only — where a centre charges per day or per dive, its rate is listed separately below, since a daily figure is not comparable with a course total.

IDR 10,000,000 – IDR 17,500,000across 2 centres pricing in Indonesian Rupiahfrom ≈ $557
  • Bali Dive TrekIndonesia
    RAID Deco 50 Diver
    IDR 17,500,000
    total
  • Gili DiversIndonesia
    Advanced Decompression Diver (50m)
    IDR 10,000,000
    total

Same training under a different agency

29 centres

A separate set of centres, teaching Extended Range under a different agency. These are not the same certification — the standards and the card differ — but they cover the same depth and scope, which is why centres price them alike. Every row here names whose rating it is, and none of them is counted above.

€500 – €850across 13 centres pricing in Eurofrom ≈ $561

Charged by the day or dive rather than as a course price:

IDR 12,500,000 – IDR 20,700,000across 8 centres pricing in Indonesian Rupiahfrom ≈ $696
$950 – $1,400across 3 centres pricing in US Dollar

Charged by the day or dive rather than as a course price:

  • Cave AdventurersUnited States
    Extended RangeTDI
    Private class$450/day→ $1,350 for the 3-day minimum
    Group class$350/day→ $1,050 for the 3-day minimum each
    $450
    per day
  • Horizon DiversUnited States
    PADI Tec 50 DiverPADI TecRec
    $1,000
    per person
  • Divers UnderGroundMexico
    TDI Extended RangeTDI
    $325/day
    $325
    per day
  • Under The JungleMexico
    Extended RangeTDI
    private$345/day→ $1,380 for the 4-day minimum
    per diver in a group$295/day→ $1,180 for the 4-day minimum each
    $345
    per day
THB 25,000 – THB 44,900across 6 centres pricing in Thai Bahtfrom ≈ $746
₱32,950 – ₱54,000across 2 centres pricing in Philippine Pesofrom ≈ $522
  • Tech AsiaPhilippines
    TDI Extended RangeTDI
    ₱54,000
    total
  • Tech AsiaPhilippines
    PADI Tec 50PADI TecRec
    ₱32,950
    total
One centre publishes a price in Mexican Peso.

Same tier, agency not stated

12 centres

These centres publish a price for Extended Range, but their own wording does not say which agency's certification it buys — many teach several and name the card only once you enquire, and some price one course for either agency. The figure is comparable; the certification is not identified, so we do not guess at one.

THB 29,000 – THB 44,900across 5 centres pricing in Thai Bahtfrom ≈ $865
€650 – €900across 4 centres pricing in Eurofrom ≈ $729

Charged by the day or dive rather than as a course price:

  • Ritual DiveMalta
    SSI XR Technical Extended Range
    €200/day→ €1,000 for the 5-day minimum
    €200
    per day
One centre publishes a price in Indonesian Rupiah.
One centre publishes a price in US Dollar.
  • Horizon DiversUnited States
    Extended Range / Trimix (TDI or IANTD)
    $1,600
    total

These prices are not like-for-like. Two centres can charge very differently for the same certification because they include different things. One price may cover twinsets, stages, deco gas and cylinder rental for every training dive, a dedicated classroom for the theory, boat or transport to the site, and the agency's registration and materials; another may be tuition only, with all of that charged separately — or the other way round, with a centre bundling in extras the first leaves out. Class size, whether the course is one-to-one, and how many days are allowed for it move the figure too. Check what each centre's price includes before comparing them, and confirm with the centre before booking.

Consumables are usually extra. Sorb, helium, O₂ and other fills, park and cenote fees, certification fees and rental are commonly charged on top.

Packages combining several certifications, upgrades from an existing one, and open-ended day rates are excluded — none of them is the standalone price of this course, and including them would move the figures away from what a new student can actually book.

Prerequisites

Certified RAID Decompression diver or equivalent from another agency. Contact RAID Dive Center for current requirements, as prerequisites are not publicly detailed.

Standards

What a diver must demonstrate to pass this course — not always published by the certifying agency.

Demonstrate advanced gas management with two decompression gas stages, multi-stage ascent procedures, decompression stop optimization, gas switching protocols, and complex dive planning for 50-metre deep dives with extended bottom times.

Instructors Teaching This Course

Philippines

Andy Davis

Dive Centres Offering This Course

We're still building out the directory country by country, so this list isn't every instructor or dive centre teaching it in the world — more locations are coming soon.

Common questions about RAID Advanced Decompression

How much does RAID Advanced Decompression cost?

Published prices for RAID Advanced Decompression range across 2 centres in the TecDiveTools directory. That is IDR 10,000,000–17,500,000 (2 centres). Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.

How long does RAID Advanced Decompression take?

6 days, based on the durations 1 centre publishes for it. The time depends on the centre's schedule, weather, and how quickly the required skills are demonstrated — agencies set a minimum number of dives, not a fixed number of days.

What does RAID Advanced Decompression training involve?

According to RAID's published standards: Demonstrate advanced gas management with two decompression gas stages, multi-stage ascent procedures, decompression stop optimization, gas switching protocols, and complex dive planning for 50-metre deep dives with extended bottom times.

What is the equivalent of RAID Advanced Decompression in other agencies?

At the same tier in TecDiveTools' cross-agency comparison: TDI Extended Range, PSAI Extended Range Nitrox, PADI TecRec Tec 50 and IANTD Technical Diver. They cover comparable training, but each agency sets its own standards, depth limits and certification card, so they are comparable rather than interchangeable — check which one your next course accepts.

TDI Extended RangePSAI Extended Range NitroxPADI TecRec Tec 50IANTD Technical Diver

What course comes after RAID Advanced Decompression?

The next step in RAID's progression is RAID Normoxic Decompression.

RAID Normoxic Decompression

Where can I take RAID Advanced Decompression?

7 dive centres and 7 instructors in the TecDiveTools directory teach RAID Advanced Decompression, in Thailand, Indonesia, Mexico and the Philippines. Each is listed further up this page.

Does the price of RAID Advanced Decompression include gas and equipment?

Not always — it varies by centre. Certification fees, equipment rental and boat or site fees are commonly charged on top of the course price. Each centre's price list on TecDiveTools shows what it notes as included.

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