GUE Instructor resumé

Professional

• GUE Instructor, Instructor Trainer and Instructor Evaluator
• Approved Halcyon Symbios Factory Trainer
• Fellow of The Explorers Club

Education

• BA, Electrical and Information Sciences, University of Cambridge, 2000

Diving Qualifications

• GUE Cave 1 and Cave 2 Instructor
• GUE Technical Diver 1 and Technical Diver 2 Instructor
• GUE CCR Fundamentals and CCR Technical Diver 1 Instructor on the JJ-CCR and Halcyon Symbios
• GUE CCR Technical Diver 2 Instructor
• GUE Fundamentals Instructor Trainer
• GUE Recreational Diver 1, 2 and 3 Instructor
• GUE Photogrammetry, Documentation Diver, DPV and Gas Blender Instructor
• GUE Instructor Evaluator: Recreational Diver 1, 2 and 3, Performance Diver, CCR Fundamentals, CCRT1, Photogrammetry and Gas Blender
• GUE Tech 2+, Cave 2, RB80 and JJ-CCR diver

Diving Experience

• Diving since 1993
• 4500+ dives
• 2200+ wreck dives
• 1700+ Trimix dives
• 1500+ Cave Dives
• 700+ Cave DPV dives
• 1000+ Rebreather Dives

Community Involvement

• Cave of Bones Project, Brazil — underwater photogrammetry
• Font de Ses Aiguades cave archaeology project, Mallorca
• Mars wreck documentation project, Baltic Sea
• Photogrammetry and safety diver — Haenyeo Voices, Jeju, South Korea
• One of the lead divers — St Georges Survey Project, Montvalent, France
• Co-founder of GUE-UK

Special interests

• 3D photogrammetry of archaeological and geological sites
• R&D and test diving

Publications

• 2024 — Early Holocene Human Occupation in the Lowlands of South America: Gruta Azul de Cocalinho, Brazil — Journal of Historical Archaeology & Anthropological Sciences, co-author
• 2023 — The Application of Photogrammetric and Topographic Techniques to Investigate Submerged Caves: A Case Study of Georeferenced Point Installation at the Font of Ses Aiguades Cave (Alcúdia, Mallorca) — Journal of Maritime Archaeology, co-author
• Primary author of the GUE Gas Blender course
• Primary author of the GUE Photogrammetry Diver course
• Quest 17.2 - The GUE/Project Baseline Lost Islands Project
• Quest 19.3 - Photogrammetry: Photography for Engineers
• The Fundamentals of Better Diving (2021), contributing author
• Quest 26.1 - Halcyon Symbios
• Scuba Diver magazine - Regular tech contributor

Languages I teach classes in

• English

Additional Info

John is a GUE Instructor, Instructor Trainer and Instructor Evaluator based in Puerto Aventuras, Mexico.
He teaches GUE Cave 1 and Cave 2, Fundamentals, technical and CCR courses, with CCR training available on both the JJ-CCR and Halcyon Symbios.
He is also the primary author of GUE’s Photogrammetry Diver course and teaches underwater photogrammetry internationally.
His teaching is informed by more than three decades of cave, wreck, rebreather and project-diving experience. John teaches regularly in Mexico and the United Kingdom and is available for classes and projects worldwide.