with Hydronauts


Are you interested in a scuba diving career? Or are you looking for a reason to spend three months on a tropical island? Look no further! Earning your Divemaster certification is the first step towards your new career as a diving professional while gaining the freedom and experience to dive anywhere in the world.  As a Divemaster, you are qualified to work in the industry –you will be trained how to brief and lead certified divers, keeping them safe, informed, and fascinated by the underwater world. 

Becoming a Divemaster at Hydronauts is unique because it not only makes you a qualified professional with a deep knowledge of diving theory, equipment, and safety practices, its a program designed with community in mind. Your two-to-three months in the Divemaster program is integrated into the operations of Hydronauts Diving Resort’s crew and guests. You’ll learn first hand what it takes to run not only a dive center but a hotel and resort as well, giving you a unique qualification should you decide to work in the industry. 

Hydronauts Divemaster Program can be completed in a minimum of 6 weeks but we recommend you join us for the 8-week programme. You’ll be working closely with our Divemaster Training Crew of instructors and on the days you’re not doing specific course work, you’re free to go diving with the other Divemasters on our two boats each day. 

Hydronauts has an integrated partnership with Global Reef–a marine ecology and conservation education programme–lead by Marine Biologist, Piers Baillie. If you’d like to spend another month working with Piers and contributing to some ongoing reef-health and fish-population studies, add a Conservation Internship onto your Divemaster program. Get in touch with us to learn more

We offer accommodation packages to our Divemaster Trainees who’d like to stay on our beachfront resort – get in touch to enquire. 

Starts at 38,000 THB


Be 18 years of age minimum. 

Be a certified Nitrox, Deep 40, and Master Rescue Diver and have a current First Aid and Oxygen provider certificate. 

Have a minimum of 15 logged underwater hours and 45 dives using open-circuit.

Have logged navigation, night dive or limited visibility.

Have a recent medical certificate from a medical professional stating you are fit to dive.


Within your Divemaster you will complete your online E-learning modules, including quizzes, presentations and your final exam. You will learn how to plan and execute a dive and which factors to consider when doing so.

You will complete various skill sets both in and out of the water, until you have shown you are competent in all aspects. The Divemaster qualification also requires a set amount of time spent assisting instructors and their students on recreational courses. Course assisting is extremely beneficial, especially if you are planning on working in the scuba diving industry yourself.

The whole programme requires a minimum of 40 hours theory and practical work to complete it. Depending on your time scale it is also possible to extend this period if you wish and take your time to ensure you are confident with all you have learnt and extremely importantly – enjoy yourself!

Why Choose Hydronauts?​

RAID Instructors​

Our experienced instructors are hand-picked, highly trained, and passionate about scuba diving. We tailor each course and dive to your unique needs.

Beachfront Diving Resort​

Southwestern-facing diving resort including a hotel, purpose-built training pool, restaurant, dive boat, and beach bar. We offer diving & accommodation packages for every budget.

Guaranteed Small Groups

We guarantee small groups of no more than four students to an instructor or dive guide so that you get the individual attention you deserve.

State-of-the-Art Equipment

We choose to dive and teach in Backplate & Wing BCD with a Long-hose, Short-hose regulator configuration favored by technical divers.

Dive Anywhere in the World

Upon completion of your RAID scuba diving course, you will be issued with an e-certification card that recognizes you as an internationally certified scuba diver.

Low Carbon Footprint

We make every effort to reduce our footprint and use of paper and plastic. All our course materials are hosted online giving you access for life.

Reserve your space now


You must wait 18 hours between your last dive and flight on a commercial aircraft.

We can arrange accommodation on request.

Please stay hydrated before and during the course

Bring towels and sunscreen (preferably reef safe!)


No such thing as a stupid question, only the ones not asked!

Yes! We are a 3-star beachfront resort! We have dorm rooms starting at 300 THB and private accommodation starting at 600 THB. Message us and ask about our diving and accommodation packages! 

Yes! You can begin your reading and quizzes before you get here but you’ll need to complete the workshops and exams with your instructor when you arrive. Contact us now to get started! 

Explorer 30 or Advanced 35 are the next courses we recommend after your Open Water 20 Course. These courses will get you to improve your buoyancy, advance your understanding of dive planning, and get you diving on shipwrecks, deep sites, and maybe even diving at night! Get in touch with us to learn more! 

Yes. All the answers are in the manuals for you to review anytime. Our approach to education is for students to comprehend and practice through repetition rather than focusing on textbook memorization. This ensures that your actions–underwater especially–are informed and contextual rather than rote and textbook. 

Yes! Check our Try Dive page or get in touch with us to learn more! We can’t wait to show you the underwater world and teach you to defy gravity!