David Polley Qualifications
David Polley B.Sc.

Technical, Trimix, Cave & Wreck Instructor and Instructor Trainer
David has over 10 years experience as a dive instructor teaching in a wide range of aquatic environments. Dave began his
professional dive career in the UK as a dive instructor whilst studying for his degree in Environmental Biology at University
of Bath.
David lead a couple of technical diving facilities at Koh Ta's Diving Centers ensuring high standards are maintained across all technical operations.Before he set up his own private diving school "Tech Diving Thailand"!
David isresponsible for all technical programs at Tech Diving Thailand from CCR to advanced trimix courses and technical instructor
courses. He also runs regular cave diving trips, teaching ProTec Intro to Cave and ProTec Full cave diving courses and leading
experienced cave divers into the many deep caves found on the mainland such as Song Hong and Sra Keaw. Most of these
caves require CCR trimix dives with lenthy decompresion. David runs ProTec and NAUI recreational programs. David is also a
ProTec Instructor teaching closed circuit rebreather, Full cave, advanced nitrox and decompression procedures courses,
extended range,Trimix, ProTec sidemount etc
As an experienced CCR Inspiration/Evolution instructor his main interest is in CCR deep wreck expeditions, and exploring
the many WWII wrecks in the Gulf of Thailand and South China Sea. David regularly leads expeditions to dive the many
Japanese ‘Maru’ shipwrecks sunk in WWII and other wrecks scattering the gulf and searching for new wrecks on deep
trimix CCR dives, and found many new shipwrecks around Thailand. David is also fluent in Thai and as an experienced
cave diver and head of the technical expedition team "Tech Explorers"! He carries out cave exploration expeditions and surveying caves around Thailand, working with Thai officials and universities.
ProTec Qualifications:
ProTec Instructor & Instructor Trainer
- WRECK 3 Instructor Technical Advanced Wreck
- Non Diving Speciality Instructor Surface Support
- MINE CAVE 2 Instructor Technical Full Mining Plant Diving
- Tec Speciality Instructor Sidemount Full Cave
- MINE CAVE 1 Instructor Technical Intro Mining Plant Diving
- TRIMIX 3 Instructor Technical Advanced Trimix
- WRECK 2 Instructor Technical Wreck
- TRIMIX 2 Instructor Technical Normoxic Trimix
- Extende Range Instructor Extended Range on Air/Nx Deco
- WRECK 1 Instructor Technical Intro Wreck
- TRIMIX 1 Instructor Recreational / Intro Trimix
- Advanced Deep Instructor (max. 50msw)
- Compressor Operator Instructor (for normal breathing air)
- Gas Blender 2 Instructor (Any mix Nitrox / Trimix)
- Gas Blender 1 Instructor (EAN - Nitrox)
- Rebreather Instructor eCCR 50M Normoxic Trimix
- Rebreather Instructor Poseidon eCCR 48m Deco Trimix
- CAVE 2 Instructor Technical Full Cave
- Advanced Scuba Instructor (ISO 24802-2)
- Scuba Speciality Instructor River & Drift
- Scuba Speciality Instructor Current & Drift
- Tec Speciality Instructor Sidemount Intro Cave
- Scuba Speciality Instructor Scientific Diving
- Scuba Speciality Instructor Dry Suit
- Scuba Speciality Instructor UW Scooter / DPV
- Scuba Speciality Instructor Altitude Diving
- Scuba Speciality Instructor Ice Diving
- Scuba Speciality Instructor Public Safety
- Scuba Speciality Instructor Dive Group Leader
- Scuba Speciality Instructor Boat Diving
- Master Scuba Instructor (ISO 24802-2, eq. CMAS M**)
- CAVE 1 Instructor Technical Intro Cave
- Scuba Speciality Instructor Diving with Children
- Rebreather Instructor eCCR 40m Sport
- Rebreather Instructor Poseidon eCCR 40m Sport
- Scuba Speciality Instructor Solo Diving
- Scuba Speciality Instructor Self Reliant Diving
- Scuba Speciality Instructor Full Face Mask
- Scuba Speciality Instructor Equipment Specialist
- NITROX 2 Instructor (Technical Nitrox Deco / Advanced EANx 22-99%)
- Tec Speciality Instructor Sidemount TEC
- Scuba Speciality Instructor UW Video / Film
- Scuba Speciality Instructor UW Photo
- Scuba Speciality Instructor Sidemount
- Scuba Speciality Instructor Discover Cave Diving
- Scuba Speciality Instructor Peak Performance Buoyancy
- Scuba Speciality Instructor Search & Recovery
- Scuba Speciality Instructor Wreck Diving
- Scuba Speciality Instructor Rescue
- Speciality Instructor Automated External Defibrillator
- Speciality Instructor Oxygen Provider Instructor
- Scuba Speciality Instructor Nitrox 1 (EAN 22-40, ISO 11107)
- Scuba Speciality Instructor Deep Diving
- Scuba Speciality Instructor Cavern Diving
- Speciality Instructor Medical First Aid
- Scuba Speciality Instructor Advanced Navigation
- Scuba Speciality Instructor Night Diving
- Prime Scuba Instructor (ISO 24802-2)
NAUI Instructor
- NAUI instructor #62067
- NAUI Adaptive Scuba Instructor #62067
- NAUI Advanced Open Water Scuba Diver Instructor #62067
- NAUI Advanced Rescue Scuba Diver Instructor #62067
- NAUI Altitude Instructor #62067
- NAUI Assistant Instructor #62067
- NAUI Basic Life Support-CPR & First AID #62067
- NAUI Basic Life Support-CPR & First AID #62067
- NAUI Deep Diver Instructor #62067
- NAUI Divemaster Crossover Instructor #62067
- NAUI Divemaster Instructor card #62067
- NAUI International Diver Instructor #62067
- NAUI Introduction to Scuba Instructor #62067
- NAUI Master Scuba Diver Instructor #62067
- NAUI Neurological Assesment #62067
- NAUI Night and Limited Visibilty Diver Instructor #62067
- NAUI Nitrox Diver Instructor #62067
- NAUI Open Water Scuba Diver Autonomous-ISO Level 2 Instructor #62067
- NAUI Recreational Hookah Diver Instructor #62067
- NAUI Refresher Scuba Instructor #62067
- NAUI Rescue Scuba Diver Instructor #62067
- NAUI Scuba Diver (Supervised Diver - ISO Level 1) Instructor #62067
- NAUI Search and Recovery Diver Instructor #62067
- NAUI Skin Diver Instructor #62067
- NAUI Skin Diving Instructor Instructor #62067
- NAUI Supplied Air Snorkeling Instructor #62067
- NAUI Tandem Scuba Diver Instructor #62067
- NAUI Training Assistant Instructor #62067
- NAUI Try Scuba Diving Instructor #62067
- NAUI Underwater Archaeology Instructor #62067
- NAUI Underwater Digital Imaging Instructor #62067
- NAUI Underwater Hunting & Collecting Instructor #62067
- NAUI Underwater Naturalist Instructor #62067
- NAUI Wreck Diver (External Survey) Instructor #62067
- Real NAUI First AID instructor #62067
- B.Sc. (Hons) Environmental Biology
Teaching Qualifications:
- ProTec Instructor Trainer #16933
- NAUI Master Instructor #632725
- NAUI TecRec TEC Deep Instructor
- NAUI TecRec TEC Deep Tri-mix Instructor
- NAUI TecRec TRI-Mix Gas Blender Instructor
- NAUI Technical Sidemount Instructor
- Advanced Wreck Instructor
- ProTec Poseidon MKVI Instructor
- ProTec Inspiration/Evolution CCR Instructor
- ProTec Full Cave Instructor
- ProTec Advanced Nitrox instructor
- ProTec Deco procedures instructor
- ProTec Extended Range Instructor
- ProTec Sidemount
- ProTec Trimix
- ProTec Service Technician
- BSAC Advanced Mixed Gas Instructor
- BSAC Inspiration/Evolution Instructor
- BSAC Compressor Operator
- Dry Suit Instructor
- Emergency Oxygen Provider Instructor
- Underwater Videographer Instructor
- Equipment Specialist Instructor
- Diver Propulsion Vehicle Instructor
- Underwater Photographer Instructor
- Project Aware Instructor
- Emergency First Response (EFR) and Care for Children and AED Instructor
Diving Certifications:
- Hypoxic Trimix CCR Diver
- GUE Fundamentals Diver
- Apeks Service Technician

www.techdivingthailand.com




