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Cave 1 in worldwide: 4 instructors on TecDiveTools, with the agencies and courses each teaches, and a summary of what students say.
TecDiveTools lists 4 instructors teaching Cave 1 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). 2 of these 4 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, 2 have a written synthesis of what reviewers say about them. How we read and count reviews.
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About the course
A technical cave diving course introducing basic cave-zone skills and advanced line work in overhead environments. Students learn proper finning techniques to minimize silt, guideline navigation, entanglement rescue, and emergency procedures specific to cave diving. The course emphasizes non-silt propulsion, proper weighting, and buoyancy control essential for confined underwater passages where ascent to the surface is not an option. This intermediate overhead course builds on cavern training to develop divers capable of deeper cave exploration with enhanced technical skills.
Demonstrate advanced buoyancy control with precision hovering, non-silt propulsion techniques, guideline navigation and reel management, entanglement rescue procedures, buddy communication in overhead environments, and emergency response in confined spaces.
4 instructors on TecDiveTools teach RAID Cave 1 worldwide: Thailand (2), Indonesia (1) and Mexico (1). Each is listed above.
One centre in the TecDiveTools directory publishes a whole-course price for RAID Cave 1 worldwide: Sulawesi Dive Trek, at €2,000. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
8 days, based on the durations 1 centre publishes 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 TDI Intro to Cave (182), IANTD Introductory Cave Diver (72), NSS-CDS Apprentice Cave Diver (4), ANDI Intro to Cave (2) and PSAI Intro to Cave Diver (1). They are comparable rather than interchangeable — each agency sets its own standards and card, so check which one your next course accepts.