scuba divers swimming under water

Explore further with the SSI Deep Diving Specialty

SSI Deep Diving Specialty

Unlock the mysteries of the deep! This course equips certified divers to explore depths up to 40 meters safely, revealing new dive sites and unique marine encounters in Koh Tao’s best dive sites like Chumphon and Sail Rock!

Level

Advanced

Course

Duration

1.5

Days

Max Depth

40

Meters

Cost

฿8,000

Thai Baht

The Learning Experience

Perfect for certified divers wanting to enhance their underwater experiences, the SSI Deep Diving Specialty Course offers a comprehensive exploration of deeper diving. This program includes theoretical lessons combined with three supervised deep dives, where you’ll learn critical safety protocols, dive planning, and techniques necessary for deeper exploration. Upon completion, you’ll be certified to dive down to 40 meters, opening the door to exhilarating deep-water sites and encounters with unique marine life rarely seen at shallower depths.

Ready to start your adventure?

What’s included

What to bring

Prerequisites

Itinerary

09:00-11:00 Deep diving academic session
11:00-11:30 Air consumption check and dive planning
11:30-12:30 Break
12:30-17:00 Deep dives 1+2 (max. 30m)
17:00-17:30 Debrief

08:00-12:00 Deep dive 3 (max. 40m)
12:00-12:30 Certification and celebration :)

SSI Deep Diving Specialty

Unlock the mysteries of the deep! This course equips certified divers to explore depths up to 40 meters safely, revealing new dive sites and unique marine encounters in Koh Tao’s captivating waters.

All activities start the day after arrival on the island.

฿8,000

Why choose Goodtime for Scuba Diving in Koh Tao?

Smaller Groups

Max 4 students per instructor for a more personalised experience.

Later Starts

Enjoy the freedom to sleep in; we start later than most dive schools on the island.

Uncrowded dive sites

We carefully plan our dive trips to avoid the crowds.

Fully Equipped Classroom

Our beach front classroom equipped with Air-Con and WiFi is the perfect environment to learn to dive on Koh Tao.

Highly experienced instructors

Our professional SSI instructors are passionate divers with extensive local knowledge.

Speed boat

We have our very own speedboat that allows us to travel to further dive sites in the quickest time possible.

Reviews

Bella W.
15 March 2026

This place is like no other good time adventures in Thailand 😉! Great set up and amazing waters. Joe (the dive instructor) is like Sebastian from the little mermaid how he glides through the water and so helpful throughout!

Gabe0504
14 March 2026

I took the Open Water course with Goodtime and was thrilled. A huge thank you to Lydia, who is an excellent instructor, and to the entire team! Everyone is incredibly friendly and helpful, and I was able to admire some of Koh Tao's most beautiful dive sites. Highly recommended!

Aymeric M.
13 March 2026

Really Good timing dive on beautiful spots, thanks to our awesome instructor Lydia 😀♥️🐠🐡🌅🌊

Maxime B.
13 March 2026

Amazing dive in mango bay and white rocks. Thanks to Lydia and all the staff.

Florian S.
12 March 2026

I did the Open Water Diver in 3 days in a group of three. Amazing expierence with best conditions in sight under water and the weather. Even the skills we could learn in the lagoon right in front of the diving center. Lydia is an energetic and enthusiastic teacher, so the theory wasn't boring and during the dive trips we felt 100% save. Gily joined us on the last day and took some nice videos. Thanks for that buddy!

Christof D.
10 March 2026

We had some wonderful dives with guides Daan and Mira from Goodtime Adventures. Relaxed diving from their own boat, followed by drinks and snacks at their lovely, cozy beach bar. The crew always brings such a great vibe. We truly enjoyed it. Best regards!