Open Water Course 18m

Open Water Course 18m

Open Water Course | 4 Days | 9,000b

Koh Tao is famous for its diving courses. Its most popular diving certification is the Open Water Course, which costs 9,000b.  If you want cheap accommodation we can include 3 nights AC dorm for an additional 900b, only if booked at least 48 hours in advance. Private rooms are also available in the same resort.  To book in advance you pay a 2,000 deposit to ensure we space for you.


Pay a deposit of ฿2,000.00 per item


Open Water Course 2024

Koh Tao is a very popular tropical island, with warm, clear water for diving courses. Its most popular diving certification is the beginner-level 4-day diving course. The first day is just 30 minutes of orientation starting at 5pm.

The Open Water Course has been completed by millions of people around the world. The course is divided into 2 academic sessions where you learn dive theory and the basics of scuba diving and diving history.  Plus an exam to help with your knowledge development.

Now the theory has gone fully digital, all the reading, quizzes and exam can now be done through the MySSI app.  This can all be done in advance of the course if you want more beach time.  But there is still plenty of time to do it here.

You will have 1 shallow water training session (normally in a swimming pool) where we practice the essential skills required for diving and get learn about your scuba diving equipment.

When the conditions are good we also do the training sessions in the sea, so you get 2 extra dives and more chance to practice your diving skills at Koh Tao’s dive sites.

Koh Tao open water diving course
Smile for the camera

Next is the 4 open water training dives where you practice the scuba diving skills and learn more about scuba equipment and neutral buoyancy on our afternoon boat trip.

The first 2 dives are in calm, shallow water in one of Koh Tao’s sheltered bays, no more than 12m deep.  Once you have practiced some diving skills you get to explore the coral reefs and marine life at the dive sites.

The next 2 open water dives the following day allow you to go in deeper water, with a maximum depth limit of 18m. Practicing diving skills, dive planning, more exploration of Koh Tao’s dive sites, and becoming a safe, competent diver.

After successfully completing everything, you will have a diving license to 18m to use anywhere in the world!

Is Koh Tao safe for diving?

You don’t need any experience as we teach you everything but you do need to have adequate swimming skills. Scroll down for a brief schedule.

Koh Tao diving course
Students on their open water course

What Does the Course Include?

Our open water course includes all equipment rental, a digital certification sent straight to your phone, water, tea, and coffee on the boat.

A digital manual accessible from your phone, and free dive insurance from Dive Assure during your training. Plus a free app for recording your training and logging your dives.

If you want cheap dorm accommodation by the beach you can get 3 nights dorm accommodation for an additional 900b, if booked at least 48 hours in advance and subject to availability. Please include in this in your notes when you book.  If you walk in and book you pay standard dorm rates per night.

Do you want a private room? We have a range of accommodations, from cheap AC rooms or private rooms by the beach, please ask for availability as it is very busy.

Koh Tao diving, open water coure
A group of open water students on their safety stop

How Does The Open Water Course Work

After downloading the MySSI app from your Play Store and signing up in the shop you get access to the reading material on your phone and you have to read the first 3 chapters before you start the course the following morning. What better way to read the open water diver manual than while enjoying a cocktail at one of Koh Tao’s beach bars?  Or you can download it before arriving in Koh Tao and read it as you travel here.

Fun divers descending
Say Hi to the camera

A Brief Open Water Course Schedule

Day 1 Course orientation at 5 pm, sign up, and the required paperwork after making your booking, finishing by 5.30 pm.

Day 2 Classroom sessions from 9 am and shallow water training sessions (normally in a swimming pool) where we practice the essential skills required for diving and get learn about your scuba diving equipment. Don’t worry you get a lunch break, and you will be finished by 5 pm.

Day 3 Classroom session from 9 am and exam followed by a break for lunch and in the afternoon the 2 dives to a max of 12m repeating some of the skills from the day before, finishing by 5 pm.

Day 4 A morning start and 2 open water dives to a max depth limit of 18m, finishing by 12 pm. Log your dives and complete the paperwork for the course and get your open-water certification!  Scroll down for a full schedule.

If you don’t have 4 days for the open water course then the 1 day Try Scuba Diving could be for you, you can still discover diving on Koh Tao.

Here Are Some Typical Questions

Can I dive with contact lenses?
When is the best time to go diving on Koh Tao?
How much water should I drink when scuba diving?
You do not need to be an athlete but you need to be able to swim, there are 2 swim tests that you need to complete comfortably.

The Full Open Water Course Schedule

Day 1 – After making your booking you come to the shop by the beach for the course orientation at 5pm where you download the MySSI app onto your phone, complete digital paperwork, and receive an overview of the course timetable.

Day 2 – The following morning after you have signed up, you are ready to start your diving course on Koh Tao.  We start at 9 am with academic sessions, reinforcing the diving knowledge that you have read in the manual. In the afternoon you learn the required skills for the course in shallow water. Either in a pool or from one of Koh Tao’s shallow beaches. It is here that you learn all the scuba diving skills required for your open-water license.

Day 3 – The next day starts in the morning with more theory and an exam to check your diving knowledge and in the afternoon the first 2 open water dives at one of our dive sites are to a maximum depth of 12m.  But to begin with, we are normally shallow than this to practice your scuba diving skills. Once you feel comfortable underwater we can go a little bit deeper and start to explore Koh Tao’s underwater world, its beautiful coral reefs and marine life.

Day 4 – The following morning dives 3 and 4 to a maximum depth of 18m and we dive deeper and further than the day before, you will be amazed. At all times your instructor will be with you to keep you safe, and you practice some of the skills you did earlier in the shallow water training and find all the cool stuff under the sea.  Maybe you will be one of the lucky ones and see a whale shark, not everyone does.  When you come back from diving we finish the course paperwork and it’s time to celebrate the start of your diving journey.

Want to learn more about scuba diving and go deeper than 18m? The next popular scuba diving course on Koh Tao is the advanced open water. You can start this course the day after you finish your open water or simply go fun diving around Koh Tao’s diving spots and enjoy the underwater scenery and aquatic life.

HTMS Sattakut Wreck Koh Tao
The forward gun of the HTMS Sattakut

A word on payment …

You can book in advance by paying a deposit you will receive a confirmation email within 24 hours from our staff. Where we will ask you to confirm your arrival time and date and the ferry company name. Do not worry if you have not booked a ferry yet.

Booking Terms and Conditions

By sending this request and payment you are submitting a reservation for your open water course. Ensure that you have read and understood our terms and conditions.

Please ensure that you read the medical form and if you have to answer yes to any questions you will require a sign-off by a diving doctor. While this is available on Koh Tao some pre-existing conditions may require sign-off by your doctor or specialist.

If in doubt please ensure the medical questionnaire is completed before leaving your home country. Some medical conditions are not suitable for diving and may preclude you from diving.

Want To Know More About Koh Tao Diving?

What to do next after your open water course? There is the Advanced Course as we mentioned or Fun Dives, or Specialties such as WreckDeep or Nitrox.
Find out more about the SSI diver training agency here: Dive SSI

Want To Know More About Koh Tao Diving?

Do you want to know more about a Koh Tao diving course? Feel free to contact us and one of our team of dive professionals will answer any questions quickly to see what scuba program is right for you. We have a variety of diving courses available with the SSI diving training organization.
What other activities can I do after my open water course?
Should I buy a dive computer?
Find out more about the SSI diver training agency here: Dive SSI

Open water course on Koh Tao is very popular