David Polley

Technical, Trimix, Cave & Wreck Instructor Trainer

David has over 10 years of 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 the University of Bath. He joined Tech Diving Thailand in 2011 and now manages the Tech Diving Thailand Technical & Recreational Department.

David leads the Tech Diving Thailand technical facility ensuring high standards are maintained across all technical operations. David is responsible 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 Cavern, 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 lengthy decompression. David runsProTec NAUI and TecRec programs and has written some ProTec TecRec diving courses such as Advanced Wreck and Cave diver. He is a BSAC Advanced Mixed Gas Instructor, BSAC Inspiration CCR instructor and teaches the whole range of BSAC tech courses. David is also a ProTec Instructor teaching closed circuit rebreather, Full cave, advanced nitrox and decompression procedures courses, extended range, Trimix, ProTec side-mount 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 the 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 he 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 'S.E.A. Explorers' he carries out cave exploration expeditions and surveying caves around Thailand, working with Thai officials and universities.

David Polley teaching gas blender course

David Polley teaching cave diving courses 3

Qualifications:

NAUI Qualifications

Degree Qualifications:

B.Sc. (Hons) Environmental Biology

Teaching Qualifications:

Cave Diving Courses

Cavern Diver Instructor #15094
Intro to Cave Instructor #15094
Full Cave Instructor #15094
Sidemount For The Overhead Environment Instructor #15094
ProTec Sidemount Full Cave Instructor #15094
Survey WorkshopInstructor #15094
Exploration Workshop Instructor #15094
Stage Cave Workshop Instructor #15094
Multistage Workshop Instructor #15094
Cave Decompression Diver Instructor #15094
DPV For The Overhead Environment Instructor #15094
Advanced Sidemount Workshop Instructor #15094
Advanced DPV For The Overhead Environment Instructor #15094

Try Scuba/Passport Diver Instructor #15094
Tandem Scuba Diver Instructor #15094
Get Certified/Scuba Diver Instructor #15094

CCR Rebreather Courses

CCR Experience Instructor #15094
Basic MOD1 Instructor #15094
CCR Crossover Instructor #15094
Normoxic Trimix MOD 2 Instructor #15094
CCR For The Overhead Environment Instructor #15094

^{* Junior Level certification is available for these courses.}

Diver Courses

Get Certified- Scuba Diver Instructor #15094
Enriched Air Nitrox (EANx) Diver Instructor #15094
Advanced Scuba Diver Instructor #15094
Rescue Scuba Diver Instructor #15094
Master Scuba Diver Instructor #15094
First Aid Provider Instructor #15094

^{* Junior Level certification is available for these courses.}

Specialty Diver Courses

Night Diver Instructor #15094
Deep Diver Instructor #15094
Underwater Imaging
- Underwater Photographer Instructor #15094
- Underwater Videographer Instructor #15094
Training Assistant Instructor #15094
Public Safety Diver Instructor #15094
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Technical Diver Courses

Introduction to Technical Diving Skills
- Introduction to Technical DivingInstructor #15094
- Sidemount DiverInstructor #15094
Mixed Gas and Decompression Diving
- Technical Decompression Diver Instructor #15094
- Helitrox Diver Instructor #15094
- Trimix Diver Instructor #15094
- Technical Support Leader Instructor #15094
Rebreather Diving
- CCR Diver Instructor #15094
- CCR Mixed Gas Diver Instructor #15094
- Extreme Exposure CCR Mixed Gas Diver Instructor #15094
- Intro Cave Rebreather Instructor #15094
- Full Cave Rebreather Instructor #15094

Overhead Environments
- Cavern Diver Instructor #15094
- Intro to Cave Instructor #15094
- Into to Cave Sidemount Diver Instructor #15094
- Full Cave Instructor #15094
- Cave Diver (Levels I and II) Instructor #15094
- Advanced Cave Diver Instructor #15094
- Cave Rescue Instructor #15094
- Intro Cave Rebreather Instructor #15094
- Full Cave Rebreather Instructor #15094
- Intro Technical Wreck Instructor #15094
- Wreck Penetration Diver Instructor #15094
- Technical Wreck Penetration Diver Instructor #15094
- Mine Diver (Levels I and II) Instructor #15094
Diver Propulsion Vehicle (DPV)
- DPV Technical Diver Instructor #15094
- DPV Extreme Exposure Diver Instructor #15094
Gas Blender and O2 Service Technician
- Nitrox Gas Blender and O2 Tech Instructor #15094
- Mixed Gas Blender and O2 Tech Instructor #15094