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Open Water Diver

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Swimming-Pool-ConfinedWhichever agency you choose to take your Open Water Course with your Scuba Diving license is your ticket to exciting adventures in the underwater world and lasts for a lifetime. The 4 day Open Water Course including 5 dives, 1 in confined water & 4 in the open ocean,  is your first step on the diving certification ladder.  This Open Water license enables you to dive to a depth not to exceed 18 meters, in conditions not to exceed your training, with a buddy, who is also a certified diver, at 100% of all diving destinations throughout the world!

How much?

Only 11000 Thb  

What's involved?

The SSI and PADI Open Water courses are divided into modules and consist of five academic sessions - video and lecture, shallow water sessions - amidst the beauty of the islands' sheltered beaches, and then four open water dives in the ocean.

What do I need to start?Open-Water-Course

Be at least 10 years old and be able to swim (Note: 10 to 12 year olds have a max certerfied depth limit of 12 meters).

Big Blue provides all equipment, boat trips, etc., for the duration of the course. All SSI course materials are totally paperless and free of charge, but the physical PADI Manuals must be purchased for an additional 1000 Baht.

Am I fit to dive?
Read this medical questionnaire, if you can answer yes to any of the questions, you may require medical clearance to enroll on a diving course. Email us if you want more information.

How long will it take?

Typically the course takes between three to four full days, but rest assured, we will not rush you through the programme. Because the course is performance based, you will have plenty of time to practise your new skills prior to certification.

Typical Diary of the Open Water Diver Course


Orientation Day- 5pm- 7pm: We start the OW Diver 

Course every day at 5pm when we get you to meet with your Instructor & the other guys on the course talk about what we'll do for the next couple of days. Then we're going to stick a video on & make you sit through it for just over an hour answering as many questions as you can in your Open Water manuals.

Day 1

-   8.30am-11.30am: Theory Modules 1,2+3- Sitting over breakfast & coffee your Instructor will talk about what you learnt so far on the video, why you need to know it, & when you will do it. We have a few quizzes to do at the end of each module

-   1pm- 5.30pm: We'll go into the swimming pool & do what is called shallow water confined. We'll start in a depth you can stand up in &  then work to a maximum depth of no more than 3 meters by the end of the afternoon.

This day can also be reversed and be the pool first and then classroom after lunch.


Day 2

-   8am-11.00am: Theory Module 4+5. Now you are ready to sit the Open Water Final Exam.

-   12.30pm-5.30pm: We're off on the boat to do 2 dives at 2 different divesites to reach a maximum depth of no more than 12 meters. We'll do a number of skills that we did the day before in shallow water, in slightly deeper water & generally go out & explore the reef, look at fish & try & get to grips with your buoyancy control. 

Day 3

-   7am-12pm: Out on the boat this time to one of Koh Tao's best dive sites to dive to as deep as 18 meters at a 30 meter divesite (conditions permitting) which means we'll have to stay focused on being in mid water. We'll see big schools of barracuda, trevally, groupers, batfish & many many more.

Get 75% in the multiple choice exam & then you'll then be certified as an Open Water Diver which will entitle you to dive at all the wonderful places you could ever imagine down to a maximum depth of 18 meters!


Now what? After successfully completing the Open Water Diver programme, you'll be issued with your Open Water Diver certification card. 

This internationally recognised credential is your ticket to the diving world. You may also want to continue your dive education with an Advanced or Speciality Diver course to allow you to explore more dive opportunities.

Click here to book your Open Water Course.