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

Juliette L.
9 June 2026

Amazing day ! Diving for the first time, all the crew were amazing, thank you to Carmen out instructor for her patience and thank you to Viny, Fabio, Anna and the captain for organizing that super day

Mitch H.
9 June 2026

Great dive company. Did two fun dives and it was good. Had Ben as the dive master/guide and she was great. Thanks!

Zachary D.
8 June 2026

Had a great time diving with Ben at White Rock and Twins after helping the Goodtimes team do beach clean up! Ben was a great dive master and helped us identify a lot of cool fish and made it a super fun experience. Also huge shout out to Mike for joining our dive today and doing an awesome photo shoot for us!

Sophia C.
8 June 2026

My partner and I completed two fun dives with Goodtimes and had an amazing time! Our dive master, Ben, did a great job and made sure we had so much fun. Additionally, we also had Mike take photos of us and it was so much fun! Everyone was so friendly and we absolutely loved the vibes. We also joined the group clean-up earlier which was nice as it was sad to see so much trash around the beautiful island. We really enjoyed our day with Goodtimes and had so much more fun on the dives compared to our open water cert that we did with another shop. If you are thinking about diving here or getting a cert, I would recommend! If we had more time on Koh Tao we would come back.

Matthew C.
8 June 2026

Just Dive with Good Time 🤙 We did our Open Water with them. Such a lovely group of people that work here, especially our Instructor Lydia! She is so so good at what she does, she has a great way of teaching, really methodical in showing and explaining everything we needed to know to be safe divers. Lydia was patient too, and really made me feel at ease as someone who has a long-standing fear of drowning! If you’re in any way unsure of whether it’s for you, just talk to this crew and they’ll put your mind at ease and you absolutely won’t regret it! Owners are super sound and have created a lovely little community around it. Food is immense there too in their restaurant, lamb burger was outrageous. They often host international DJs, or an open decks sessions on a Sunday, so you can spend morning, afternoon and night perched there.

Barry R.
7 June 2026

I recently did a refresher dive here after not having dived for several years. The instructors were friendly, patient and extremely knowledgeable. Highly recommend.