Tech Diving Khao Lak

Welcome to Big Blue Tech Khao Lak

Khao Lak’s leading technical diving centre.

We are the only dive centre on the West Coast running a CCR and Sidemount friendly Similan Liveaboard. Specially designed itineraries allow us to dive some of the Similan Islands deeper pinnacles with longer run times.

Whether you are finishing a course or fun diving, your safety is paramount to us. Using the latest in training techniques. We go well beyond set training requirements with all of our students.

We have one of Thailand’s leading tech instructors, a hugely experienced dive and boat crew, you can rest assured you will enjoy every minute.


It could be Advanced Nitrox, Decompression Procedures or a Technical Wreck course like TDI Advanced Wreck.
What draws you into the world of technical diving?
Maybe you already have plenty of experience and would like to explore the deeper realms of the Similan Islands.
Whichever one it is – we can help. Here at Big Blue Tech Khao Lak, our courses are run by a dedicated group of highly qualified instructors.  Our team is extremely experienced at introducing new students to technical diving in a safe and friendly way.

With a purpose built training pool and dedicated dive boats. We are able to offer both technical diving courses and technical fun diving to individuals and groups. Our Similan Liveaboard the MV Blue Dolphin refurbed in 2022 allows us to explore the Similan Islands and spend a whole day at the world famous Richelieu Rock. Closer to home we have wrecks such as the MV Seachart, Boonsung and The Premchai. No matter what has brought you to Big Blue Tech, it’s time to take your first steps towards becoming the technical diver you’ve always wanted to be.

Similan Liveaboard

Blue Dolphin Similan liveaboard

Find out more about our Similan Liveaboard,
dates and itineraries now.

Tech Courses

Girl diving sidemount, make heart sign with hands

Find out more about our Technical Dive courses, schedules and requirements now.

MV Seachart

Underwater wreck scene

The Seachart, our local wreck.
Great for training dives, courses and fun diving.



Minimum age 18
Advanced Adventure Diver, Advanced Diver, or equivalent
Sidemount or Twinset Diver
Nitrox Diver
Sidemount or Twinset certification
Proof of 50 logged open water dives


4-5 DAYS including POOL & 6 DIVES



Divers on a descent line

The Building blocks for any Technical Diver…

Find the no-decompression limits (NDLs) a limiting factor to dives?
As a recreational diver, planned decompression is not within our training.
The combination of TDI Advanced Nitrox and Decompression Procedures Courses prepares you for the use of Nitrox and O2 to aid accelerated decompression and planned staged decompression diving with a maximum operating depth of 45m.

The Courses

These courses form the basis of all other technical courses, this is where you will have the steepest learning curve and this is why you want to be at Big Blue Tech Khao Lak. After completing these courses keep diving and gaining additional experience before you consider the next level.

Online Learning

With online learning with this TDI course, you can complete all of the academics prior to arriving here at Big Blue Tech, the course materials are then available to you at any time after the course allowing you to refresh your TDI Advanced Nitrox & Decompression Procedures course at any time.