Photo by Teemu Virtanen · CC BY-SA 3.0
TDI Technical Divemaster
Technical Divemaster is TDI's professional-level certification for divers leading technical diving operations. Candidates must hold a sports diving divemaster certification and demonstrate mastery in one or more technical diving disciplines (Advanced Nitrox, Decompression Procedures, Extended Range, Trimix, etc.). Technical Divers assume leadership roles managing team safety, gas logistics, and operational complexity beyond recreational supervision.
Prerequisites
Minimum age 18. Certified SDI/TDI Divemaster or equivalent. Current CPR certification required. Current medical examination required. Must hold technical diver certification in the specific discipline they're pursuing Technical Divemaster in (e.g., Advanced Nitrox, Decompression Procedures, Extended Range). Minimum 50 logged dives total.
Standards
What a diver must demonstrate to pass this course — not always published by the certifying agency.
Technical Divers must demonstrate mastery of: advanced risk assessment, team gas management and logistics, rescue procedures at depth and under decompression obligation, technical dive planning and execution, site-specific hazard analysis, and the full scope of emergency response required for the technical discipline(s) in which they're certified.
Instructors Teaching This Course
Egypt
Indonesia
United States
Philippines
Thailand
Dive Centres Offering This Course
Indonesia
Philippines
Thailand
United States
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 TDI Technical Divemaster
What are the prerequisites for TDI Technical Divemaster?
TDI's standards require: Minimum age 18. Certified SDI/TDI Divemaster or equivalent. Current CPR certification required. Current medical examination required. Must hold technical diver certification in the specific discipline they're pursuing Technical Divemaster in (e.g., Advanced Nitrox, Decompression Procedures, Extended Range). Minimum 50 logged dives total.
What is the minimum age for TDI Technical Divemaster?
TDI's standards state: Minimum age 18.
How many dives do I need before starting TDI Technical Divemaster?
TDI's standards state: Minimum 50 logged dives total.
What does TDI Technical Divemaster training involve?
According to TDI's published standards: Technical Divers must demonstrate mastery of: advanced risk assessment, team gas management and logistics, rescue procedures at depth and under decompression obligation, technical dive planning and execution, site-specific hazard analysis, and the full scope of emergency response required for the technical discipline(s) in which they're certified.
Where can I take TDI Technical Divemaster?
11 dive centres and 30 instructors in the TecDiveTools directory teach TDI Technical Divemaster across 6 countries, most in Egypt, Malta, Indonesia and the United States. Each is listed further up this page.