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Decompression Procedures in worldwide: 432 instructors on TecDiveTools, with the agencies and courses each teaches, and a summary of what students say.
TecDiveTools lists 432 instructors teaching Decompression Procedures worldwide.
Listings are ordered by how much evidence exists about their technical diving, not by a star rating, with any paid Featured listing shown first and marked as such (how rankings work). 153 of these 432 carry reviews we have read and classified as being about technical or overhead training. The count excludes recreational certifications by name, so a busy resort does not outrank a one-instructor cave operation on the volume of its reef trips. Separately, 133 have a written synthesis of what reviewers say about them. How we read and count reviews.
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About the course
Decompression Procedures is the foundational staged-decompression course: planning and running dives with a dedicated deco gas and mandatory stops, on open circuit, to a maximum depth of 45m/150ft over 4 dives. It teaches gas planning for a single decompression gas, in-water discipline for controlled ascents, and the contingency thinking a no-immediate-surfacing dive requires. It's for Advanced Nitrox divers ready to move from no-decompression technical diving into real staged decompression — the gateway course into TDI's deeper technical progression (Extended Range, Trimix, and most CCR decompression tracks all build on it). It's usually taken right after or alongside Advanced Nitrox, since the two share overlapping dive requirements.
432 instructors on TecDiveTools teach TDI Decompression Procedures worldwide: Egypt (92), United States (86), Philippines (80), Mexico (62), Thailand (39) and Malta (37), and 1 more. Each is listed above.
Published prices for TDI Decompression Procedures worldwide range across 23 centres in the TecDiveTools directory — roughly US$440 to US$1,500 at current exchange rates. In each centre's own currency: €450–€680 (9 centres), THB 29,000–29,500 (5 centres), $800–$1,500 (5 centres), IDR 7,900,000–10,000,000 (3 centres) and ₱28,450 (1 centre). 6 centres charge by the day instead, which is not comparable with a course total. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
Between 2 and 5 days, based on the durations 17 centres publish for it worldwide. 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.
At the same tier in TecDiveTools' cross-agency comparison, instructors worldwide also teach IANTD Advanced EANx Nitrox Diver (50) and PADI TecRec Tec 45 (4). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.
