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Koh Tao Tec Divers is your premier destination for sidemount, technical diving and ccr courses on Koh Tao, Thailand.

Take advantage of decades of real-life technical wreck diving when you train with us!



Koh Tao Tec Divers was established in 2006 with one mission: to dive and explore the many historic wrecks in the Gulf of Thailand. Our passion for technical diving is what inspired us in the beginning and it continues to drive us today. Our continued search leads us to the position we have today, Koh Tao's premier destination for technical and sidemount diving. We pride ourselves on superior technical diving and sidemount training and in the long-term relationships we’ve built with our customers. People come back to Koh Tao Tec Divers because they know they’ll find what they’re looking in our relaxed atmosphere - a good challenge and a great time!




Koh Tao or เกาะเต่า in Thai translates to Turtle Island. Koh Tao is part of the Chumphon Archipelago on the western shore of the Gulf of Thailand. It covers an area of about 21 km². 

Koh Tao has been a premier destination for scuba divers since the late 1980's due to its stunning marine life and multiple dive sites suitable for both beginners and experienced divers.

Accommodation is available to suit all needs, from basic bungalows to gorgeous villas. There are plenty of restaurants and bars to satisfy your needs for food and nightlife. From Thai street food to gourmet dinners and drinks on the beach!

  • What is Technical Diving?
    Technical diving is scuba diving that exceeds the depth, immersion time and gas limits of recreational diving for a non-professional purpose. Technical diving includes extensive equipment and often involves breathing multiple gases other than air or standard nitrox mixtures. Technical diving may expose the diver to hazards beyond those normally associated with recreational diving, and to greater risk of serious injury or death. The risk may be reduced by appropriate skills, knowledge and experience, and by using suitable equipment and procedures. The skills may be developed through appropriate specialised training and experience
  • What is Sidemount Diving?
    Sidemount is a scuba diving equipment configuration which has scuba sets mounted alongside the diver, below the shoulders and along the hips, instead of on the back of the diver. It originated as a configuration for advanced cave diving, as it facilitates penetration of tight sections of cave, allows easy access to cylinder valves, provides easy and reliable gas redundancy, and tanks can be easily removed when necessary. These benefits for operating in confined spaces were also recognized by divers who conducted technical wreck diving penetrations. Sidemount diving is now growing in popularity within the technical diving community for general decompression diving, and is becoming an increasingly popular specialty training for recreational diving, with several diver certification agencies offering recreational and technical level sidemount training programs.
  • What is CCR?
    CCR is short for Closed Circuit Rebreather. A rebreather is a breathing apparatus that absorbs the carbon dioxide of the diver's exhaled breath to permit the rebreathing of the substantially unused oxygen or sometimes oxygen and helium. Oxygen is then added to replenish the amount metabolised by the diver. This differs from an open-circuit breathing apparatus (your normal scuba regulator), where the exhaled gas is discharged directly into the environment.The benefits for the diver is less gas consumption (as the vast majority is recycled) and the ability to always breathe an optimized gas mix.
  • How do I get to Koh Tao?
    From Bangkok you can get to Koh Tao with either a combination of plane and ferry, train and ferry or bus and ferry. You can fly to either Koh Samui, Chumphon or Suratthani and then get a connecting ferry to Koh Tao. Bangkok Air and Thai Airways have routes to Koh Samui, Nok Air have routes to Chumphon, Air Asia have routes to Surat Thani and Lomprayah, Seatran and Songserm have ferry connections to Koh Tao. Lomprayah also has a combined bus and ferry service from Bangkok to Koh tao. You can also take the train from Bangkok to Chumphon and then the Lomprayah Ferry to Koh Tao.
  • What is the meaning of life?
    To dive!
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