Davy Jones Tech is a great place to learn Technical Diving. I went from Tec 40 to Tech Instructor.. They offer many other courses like cave diving, equipment repair, gas blending, sidemount, rebreather and many more. Instructor trainer David Polley is very experienced and has a lot of diving knowledge that he happily shares. If your on Koh Tao don't bother Tech diving anywhere else, do it all at Davy Jones Tech.

I Just finished my TDI Cavern, Intro to Cave and Advanced Trimix with Davy Jones Tech​ and the courses were great fun as well as challenging. We went to mainland Thailand and started with really shallow dives in a place called Spitting Spider Cave. Thankfully, the spider was off duty when we were there! From there we gradually moved beyond cavern dives and on to greater depths. As the dives got a little more complicated, my cave diving skills improved step by step and it all started feeling quite comfortable. Dave is a great instructor - he won't let you cut corners, but at the same time you're ready for the challenges coming your way. Everything was organised professionally, the hire equipment was good, too -can't wait to go back and complete my Full Cave course!

I did my TDI Sidemount, PADI tec40, TDI Advanced Trimix to Full cave diver with dave. they were great fun. We went on a great cave trip up to Khao sok national park - which was beautiful we stayed on floating huts and had interesting food most nights. We also went to Song Hong sink hole which was incredible. The cave was huge and dark it was like diving through space. Learning technical diving is very demanding, but hugely rewarding experience

Just today I did a CCR try dive on the Poseidon MK VI with Dave. In the morning we did some theory, we then spend time setting all the gear up and getting to know the equipment. I got a short try in the pool and then the real deal: a dive in the sea! It was great to get to know this cool (new to me) way of diving in just one day, and I was really inspired to learn more about CCR in the future. Thanks for the interesting and cool day Dave!!

So I recently did my PADI Tec 40 & Tec 45 with Dave from Tech Diving Thailand, I have to be honest I was a little apprehensive going simply because I really didn't know what to expect. However when I met Dave for the first I realised that it was going to be a good course. Daves knowledge is extensive but what struck me most was his passion & enthusiasm for this particular area of diving, throughout the theory sessions we would often digress into the background behind the theory and to watching videos of his many exploits diving on historical wrecks. The practical part of the course was not easy but this was a plus point, there was no coasting along through the skills, Dave made the emergency drills as realistic as possible but also ensured that my understanding of the skills was up to scratch. There was no real section of the course that I preferred as I found it all challenging and therefore enjoyable.



An excellent instructor with a wealth of knowledge and also some interesting local dive sites.

I did Tech 40, 45, 50 cavern and intro cave with Dave Polley last year. Dave is a fantastic teacher, very professional and knowledgeable and trains with a relaxed and enthusiastic approach. It was a great experience pushing my diving into new areas, tech training also improved my recreational diving (trim, air consumption and planning) The cave and cavern trip too Khal Sok and Song Hong lakes was a definite highlight of my time in Thailand. Will be returning too DJL and Dave for Sidemount in the near future.

I did my Tec deep Instructor course, intro to cave and dive shop operation course with Dave at Davy Jones Tech. Had an awesome time, very professional outfit and knowledgeable instructors who could answer my questions in detail and made everything easy to understand!! Would highly recommend!!!

Great tec course with great instructors Dave and Tom. I also did the course with a friend ive been diving with for a few years and so felt very comfortable getting used to all the new skills and techniques with a very fun and motivated group! i eventually planned and completed my own dive, dived a brand new wreck and even got to spend a decompression stop with a whale Shark! cannot wait to go onto my Tec 45!!!

Cave Diving with Tech Diving Thailand was awesome! I took the TDI Cavern and Intro to Cave courses in Khao Sok National Park. The food was great - a variety of Thai cuisine - the accommodation was simple and beautiful - floating bungalows - and the people were professional, safety oriented, standard conforming and super fun. Highly recommended! 

Did my tech 40 & tech 45 with DJL Tech and I was very happy with the experience. Doing tech is an interesting experience. Even though I'm an open water scuba instructor, every thing is so totally different with tech that I felt like I was doing my open water course again. Schmike (Mike W.) was fantastic as an instructor. He was super knowledgeable and made me feel comfortable all the way.

I have done several technical diving courses with Davy Jones Tech and I have to say the level of expertise of their instructors is unmatched in any other Tech School I have been with. I completed PADI RecTech to Tech 50 and TDI extended range, cavern, intro and full cave diver. I particularly enjoyed the cave courses, conducted at Khao Sok national park and Song Hong, a crystal clear sinkhole, with near limitless depth potential! If you are learning to tech dive do not trust your life to any other school DJL Tech are the best.