Advanced Open Water SSI Koh Tao, Dive Deeper, Explore Further
The Advanced Open Water SSI programme at The Divers Boat is your next step after the Open Water certification. In just 2 days, you unlock access to depths of up to 30 metres and discover new diving environments around Koh Tao, the diver’s island. Moreover, every dive completed counts towards your future SSI certifications.
Why do your Advanced Open Water SSI in Koh Tao?
Koh Tao offers ideal year-round conditions for progressing in diving: warm water at 28-30°C, visibility up to 30 metres, and world-class dive sites just minutes from shore. The Advanced Open Water SSI unlocks sites like Chumphon Pinnacle, Southwest Pinnacle, and the military wrecks. For more on what awaits you, visit our Open Water page to understand the full learning path.
5 specialties, 2 days, your Advanced Open Water SSI programme
During your Advanced Open Water SSI course, you complete 5 adventure dives over two days with a certified instructor. Two dives are mandatory:
- Deep diving — descend to 30 metres and learn depth management
- Underwater navigation — master compass and natural navigation
You then choose 3 more from: Perfect Buoyancy (PPB), wreck diving, night diving, underwater photography, or other SSI specialties. Furthermore, if you discover a passion for one specialty, your dives already count towards the full specialty certification.
Your 2 days, step by step
- Day 1: 3 adventure dives.
- Day 2: the last 2 adventure dives.
Flexible, progressive Advanced Open Water SSI training
At The Divers Boat, your training takes place in small groups with a dedicated multilingual instructor — maximum 4 divers underwater. Our two specialised boats mean your training dives and fun dives never mix — you always have the right environment for learning. In addition, all equipment is stored on board, so there’s nothing to carry.
What our students say
★★★★★ “Did some specialty courses over a week and was impressed by the high standard of instruction. […] Thanks to our instructors Flo and Isa and our gratitude to Medi for assisting during our rescue course.”
— Darren B., Google review, October 2025
Dive by dive, or the full course?
Every Adventure dive you do with us counts towards the Advanced Open Water programme: 5 Adventure dives = your AOW certification. So you can progress at your own pace, one dive at a time, and decide later to complete the course. But at 2,500 THB per dive, five of them add up to 12,500 THB, while the full Advanced Open Water in 2 days is 10,000 THB: you save the equivalent of a whole dive and leave certified in two days, instead of spreading the course over several trips.
What comes after the Advanced Open Water SSI?
Once certified, you can continue your SSI journey towards Diver Stress and Rescue and ultimately Divemaster — the first professional level. You can also complete individual SSI specialty courses to build your skills in specific areas. To book your session, contact us directly.
